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-rw-r--r--arch/arc/Kconfig1
-rw-r--r--arch/arc/include/asm/cachetype.h9
-rw-r--r--arch/arm/Kconfig1
-rw-r--r--arch/arm/Kconfig.debug2
-rw-r--r--arch/arm/configs/aspeed_g4_defconfig2
-rw-r--r--arch/arm/configs/aspeed_g5_defconfig2
-rw-r--r--arch/arm/include/asm/cachetype.h2
-rw-r--r--arch/arm/include/asm/pgtable-2level.h1
-rw-r--r--arch/arm/include/asm/pgtable-3level.h1
-rw-r--r--arch/arm/include/asm/pgtable.h2
-rw-r--r--arch/arm/include/asm/ptdump.h6
-rw-r--r--arch/arm/kernel/Makefile1
-rw-r--r--arch/arm/kernel/machine_kexec.c7
-rw-r--r--arch/arm/kernel/setup.c4
-rw-r--r--arch/arm/kernel/vmcore_info.c10
-rw-r--r--arch/arm/mm/dump.c4
-rw-r--r--arch/arm/mm/init.c2
-rw-r--r--arch/arm/mm/mmu.c2
-rw-r--r--arch/arm64/Kconfig11
-rw-r--r--arch/arm64/include/asm/crash_reserve.h (renamed from arch/arm64/include/asm/crash_core.h)4
-rw-r--r--arch/arm64/include/asm/kexec.h2
-rw-r--r--arch/arm64/include/asm/pgtable.h431
-rw-r--r--arch/arm64/include/asm/ptdump.h7
-rw-r--r--arch/arm64/include/asm/tlbflush.h13
-rw-r--r--arch/arm64/kernel/Makefile2
-rw-r--r--arch/arm64/kernel/efi.c4
-rw-r--r--arch/arm64/kernel/machine_kexec.c2
-rw-r--r--arch/arm64/kernel/machine_kexec_file.c10
-rw-r--r--arch/arm64/kernel/mte.c2
-rw-r--r--arch/arm64/kernel/vmcore_info.c (renamed from arch/arm64/kernel/crash_core.c)3
-rw-r--r--arch/arm64/kvm/guest.c2
-rw-r--r--arch/arm64/mm/Makefile1
-rw-r--r--arch/arm64/mm/contpte.c408
-rw-r--r--arch/arm64/mm/fault.c12
-rw-r--r--arch/arm64/mm/fixmap.c4
-rw-r--r--arch/arm64/mm/hugetlbpage.c47
-rw-r--r--arch/arm64/mm/init.c2
-rw-r--r--arch/arm64/mm/kasan_init.c6
-rw-r--r--arch/arm64/mm/mmu.c18
-rw-r--r--arch/arm64/mm/pageattr.c6
-rw-r--r--arch/arm64/mm/ptdump.c11
-rw-r--r--arch/arm64/mm/trans_pgd.c6
-rw-r--r--arch/csky/Kconfig1
-rw-r--r--arch/csky/include/asm/cachetype.h9
-rw-r--r--arch/loongarch/kernel/setup.c2
-rw-r--r--arch/loongarch/kvm/mmu.c2
-rw-r--r--arch/m68k/Kconfig1
-rw-r--r--arch/m68k/include/asm/cachetype.h9
-rw-r--r--arch/mips/Kconfig1
-rw-r--r--arch/mips/include/asm/cachetype.h9
-rw-r--r--arch/mips/kernel/setup.c17
-rw-r--r--arch/nios2/Kconfig1
-rw-r--r--arch/nios2/include/asm/cachetype.h10
-rw-r--r--arch/nios2/include/asm/pgtable.h2
-rw-r--r--arch/parisc/Kconfig1
-rw-r--r--arch/parisc/include/asm/cachetype.h9
-rw-r--r--arch/powerpc/Kconfig7
-rw-r--r--arch/powerpc/include/asm/book3s/64/pgtable.h26
-rw-r--r--arch/powerpc/include/asm/pgtable.h30
-rw-r--r--arch/powerpc/include/asm/tlb.h2
-rw-r--r--arch/powerpc/kernel/setup-common.c2
-rw-r--r--arch/powerpc/kexec/Makefile1
-rw-r--r--arch/powerpc/kexec/core.c28
-rw-r--r--arch/powerpc/kexec/vmcore_info.c32
-rw-r--r--arch/powerpc/kvm/book3s_64_mmu_radix.c12
-rw-r--r--arch/powerpc/mm/book3s64/pgtable.c4
-rw-r--r--arch/powerpc/mm/book3s64/radix_pgtable.c16
-rw-r--r--arch/powerpc/mm/hugetlbpage.c6
-rw-r--r--arch/powerpc/mm/mmu_decl.h6
-rw-r--r--arch/powerpc/mm/nohash/kaslr_booke.c4
-rw-r--r--arch/powerpc/mm/pgtable.c11
-rw-r--r--arch/powerpc/mm/pgtable_32.c4
-rw-r--r--arch/powerpc/mm/pgtable_64.c11
-rw-r--r--arch/powerpc/mm/ptdump/ptdump.c21
-rw-r--r--arch/powerpc/platforms/powernv/opal-core.c2
-rw-r--r--arch/powerpc/xmon/xmon.c6
-rw-r--r--arch/riscv/Kconfig2
-rw-r--r--arch/riscv/include/asm/crash_reserve.h (renamed from arch/riscv/include/asm/crash_core.h)4
-rw-r--r--arch/riscv/include/asm/pgtable-64.h2
-rw-r--r--arch/riscv/include/asm/pgtable.h4
-rw-r--r--arch/riscv/include/asm/ptdump.h22
-rw-r--r--arch/riscv/kernel/Makefile2
-rw-r--r--arch/riscv/kernel/elf_kexec.c9
-rw-r--r--arch/riscv/kernel/vmcore_info.c (renamed from arch/riscv/kernel/crash_core.c)3
-rw-r--r--arch/riscv/mm/init.c5
-rw-r--r--arch/riscv/mm/ptdump.c12
-rw-r--r--arch/s390/Kconfig1
-rw-r--r--arch/s390/boot/vmem.c4
-rw-r--r--arch/s390/include/asm/pgalloc.h4
-rw-r--r--arch/s390/include/asm/pgtable.h22
-rw-r--r--arch/s390/include/asm/ptdump.h14
-rw-r--r--arch/s390/include/asm/tlb.h30
-rw-r--r--arch/s390/kernel/Makefile1
-rw-r--r--arch/s390/kernel/kexec_elf.c2
-rw-r--r--arch/s390/kernel/kexec_image.c2
-rw-r--r--arch/s390/kernel/machine_kexec.c15
-rw-r--r--arch/s390/kernel/machine_kexec_file.c10
-rw-r--r--arch/s390/kernel/vmcore_info.c21
-rw-r--r--arch/s390/mm/dump_pagetables.c21
-rw-r--r--arch/s390/mm/gmap.c52
-rw-r--r--arch/s390/mm/hugetlbpage.c6
-rw-r--r--arch/s390/mm/init.c5
-rw-r--r--arch/s390/mm/pageattr.c4
-rw-r--r--arch/s390/mm/pgalloc.c8
-rw-r--r--arch/s390/mm/pgtable.c12
-rw-r--r--arch/s390/mm/vmem.c74
-rw-r--r--arch/sh/Kconfig1
-rw-r--r--arch/sh/include/asm/cachetype.h9
-rw-r--r--arch/sh/kernel/Makefile1
-rw-r--r--arch/sh/kernel/machine_kexec.c14
-rw-r--r--arch/sh/kernel/setup.c2
-rw-r--r--arch/sh/kernel/vmcore_info.c15
-rw-r--r--arch/sparc/Kconfig1
-rw-r--r--arch/sparc/include/asm/cachetype.h14
-rw-r--r--arch/sparc/include/asm/pgtable_64.h10
-rw-r--r--arch/sparc/mm/init_64.c6
-rw-r--r--arch/x86/Kconfig2
-rw-r--r--arch/x86/boot/compressed/ident_map_64.c2
-rw-r--r--arch/x86/include/asm/crash_reserve.h (renamed from arch/x86/include/asm/crash_core.h)6
-rw-r--r--arch/x86/include/asm/mmu.h2
-rw-r--r--arch/x86/include/asm/pgtable.h37
-rw-r--r--arch/x86/kernel/Makefile6
-rw-r--r--arch/x86/kernel/alternative.c2
-rw-r--r--arch/x86/kernel/cpu/mshyperv.c10
-rw-r--r--arch/x86/kernel/kexec-bzimage64.c4
-rw-r--r--arch/x86/kernel/kvm.c4
-rw-r--r--arch/x86/kernel/machine_kexec_64.c3
-rw-r--r--arch/x86/kernel/reboot.c4
-rw-r--r--arch/x86/kernel/setup.c2
-rw-r--r--arch/x86/kernel/smp.c2
-rw-r--r--arch/x86/kernel/vmcore_info_32.c (renamed from arch/x86/kernel/crash_core_32.c)2
-rw-r--r--arch/x86/kernel/vmcore_info_64.c (renamed from arch/x86/kernel/crash_core_64.c)2
-rw-r--r--arch/x86/kvm/mmu/mmu.c6
-rw-r--r--arch/x86/mm/dump_pagetables.c24
-rw-r--r--arch/x86/mm/fault.c16
-rw-r--r--arch/x86/mm/ident_map.c2
-rw-r--r--arch/x86/mm/init_32.c4
-rw-r--r--arch/x86/mm/init_64.c16
-rw-r--r--arch/x86/mm/kasan_init_64.c4
-rw-r--r--arch/x86/mm/mem_encrypt_identity.c6
-rw-r--r--arch/x86/mm/pat/set_memory.c14
-rw-r--r--arch/x86/mm/pgtable.c4
-rw-r--r--arch/x86/mm/pti.c10
-rw-r--r--arch/x86/mm/tlb.c39
-rw-r--r--arch/x86/power/hibernate.c6
-rw-r--r--arch/x86/xen/enlighten_hvm.c4
-rw-r--r--arch/x86/xen/mmu_pv.c14
-rw-r--r--arch/xtensa/Kconfig1
-rw-r--r--arch/xtensa/include/asm/cachetype.h10
149 files changed, 1471 insertions, 623 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 4092bec198be..99d2845f3feb 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -6,6 +6,7 @@
config ARC
def_bool y
select ARC_TIMERS
+ select ARCH_HAS_CPU_CACHE_ALIASING
select ARCH_HAS_CACHE_LINE_SIZE
select ARCH_HAS_DEBUG_VM_PGTABLE
select ARCH_HAS_DMA_PREP_COHERENT
diff --git a/arch/arc/include/asm/cachetype.h b/arch/arc/include/asm/cachetype.h
new file mode 100644
index 000000000000..05fc7ed59712
--- /dev/null
+++ b/arch/arc/include/asm/cachetype.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_ARC_CACHETYPE_H
+#define __ASM_ARC_CACHETYPE_H
+
+#include <linux/types.h>
+
+#define cpu_dcache_is_aliasing() true
+
+#endif
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index c46ec54c5363..702d97a9c304 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -5,6 +5,7 @@ config ARM
select ARCH_32BIT_OFF_T
select ARCH_CORRECT_STACKTRACE_ON_KRETPROBE if HAVE_KRETPROBES && FRAME_POINTER && !ARM_UNWIND
select ARCH_HAS_BINFMT_FLAT
+ select ARCH_HAS_CPU_CACHE_ALIASING
select ARCH_HAS_CPU_FINALIZE_INIT if MMU
select ARCH_HAS_CURRENT_STACK_POINTER
select ARCH_HAS_DEBUG_VIRTUAL if MMU
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 5fbbac1b708b..f1fc278081d0 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -17,7 +17,7 @@ config ARM_PTDUMP_DEBUGFS
kernel.
If in doubt, say "N"
-config DEBUG_WX
+config ARM_DEBUG_WX
bool "Warn on W+X mappings at boot"
depends on MMU
select ARM_PTDUMP_CORE
diff --git a/arch/arm/configs/aspeed_g4_defconfig b/arch/arm/configs/aspeed_g4_defconfig
index b3dc0465796f..28b724d59e7e 100644
--- a/arch/arm/configs/aspeed_g4_defconfig
+++ b/arch/arm/configs/aspeed_g4_defconfig
@@ -252,7 +252,7 @@ CONFIG_DEBUG_INFO_REDUCED=y
CONFIG_GDB_SCRIPTS=y
CONFIG_STRIP_ASM_SYMS=y
CONFIG_DEBUG_FS=y
-CONFIG_DEBUG_WX=y
+CONFIG_ARM_DEBUG_WX=y
CONFIG_SCHED_STACK_END_CHECK=y
CONFIG_PANIC_ON_OOPS=y
CONFIG_PANIC_TIMEOUT=-1
diff --git a/arch/arm/configs/aspeed_g5_defconfig b/arch/arm/configs/aspeed_g5_defconfig
index 3fdf4dbfdea5..61cee1e7ebea 100644
--- a/arch/arm/configs/aspeed_g5_defconfig
+++ b/arch/arm/configs/aspeed_g5_defconfig
@@ -302,7 +302,7 @@ CONFIG_DEBUG_INFO_REDUCED=y
CONFIG_GDB_SCRIPTS=y
CONFIG_STRIP_ASM_SYMS=y
CONFIG_DEBUG_FS=y
-CONFIG_DEBUG_WX=y
+CONFIG_ARM_DEBUG_WX=y
CONFIG_SCHED_STACK_END_CHECK=y
CONFIG_PANIC_ON_OOPS=y
CONFIG_PANIC_TIMEOUT=-1
diff --git a/arch/arm/include/asm/cachetype.h b/arch/arm/include/asm/cachetype.h
index e8c30430be33..b9dbe1d4c8fe 100644
--- a/arch/arm/include/asm/cachetype.h
+++ b/arch/arm/include/asm/cachetype.h
@@ -20,6 +20,8 @@ extern unsigned int cacheid;
#define icache_is_vipt_aliasing() cacheid_is(CACHEID_VIPT_I_ALIASING)
#define icache_is_pipt() cacheid_is(CACHEID_PIPT)
+#define cpu_dcache_is_aliasing() (cache_is_vivt() || cache_is_vipt_aliasing())
+
/*
* __LINUX_ARM_ARCH__ is the minimum supported CPU architecture
* Mask out support which will never be present on newer CPUs.
diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h
index ce543cd9380c..b0a262566eb9 100644
--- a/arch/arm/include/asm/pgtable-2level.h
+++ b/arch/arm/include/asm/pgtable-2level.h
@@ -213,7 +213,6 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
#define pmd_pfn(pmd) (__phys_to_pfn(pmd_val(pmd) & PHYS_MASK))
-#define pmd_large(pmd) (pmd_val(pmd) & 2)
#define pmd_leaf(pmd) (pmd_val(pmd) & 2)
#define pmd_bad(pmd) (pmd_val(pmd) & 2)
#define pmd_present(pmd) (pmd_val(pmd))
diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h
index 71c3add6417f..4b1d9eb3908a 100644
--- a/arch/arm/include/asm/pgtable-3level.h
+++ b/arch/arm/include/asm/pgtable-3level.h
@@ -118,7 +118,6 @@
PMD_TYPE_TABLE)
#define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \
PMD_TYPE_SECT)
-#define pmd_large(pmd) pmd_sect(pmd)
#define pmd_leaf(pmd) pmd_sect(pmd)
#define pud_clear(pudp) \
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index d657b84b6bf7..be91e376df79 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -209,6 +209,8 @@ static inline void __sync_icache_dcache(pte_t pteval)
extern void __sync_icache_dcache(pte_t pteval);
#endif
+#define PFN_PTE_SHIFT PAGE_SHIFT
+
void set_ptes(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pteval, unsigned int nr);
#define set_ptes set_ptes
diff --git a/arch/arm/include/asm/ptdump.h b/arch/arm/include/asm/ptdump.h
index aad1d034136c..46a4575146ee 100644
--- a/arch/arm/include/asm/ptdump.h
+++ b/arch/arm/include/asm/ptdump.h
@@ -32,10 +32,10 @@ void ptdump_check_wx(void);
#endif /* CONFIG_ARM_PTDUMP_CORE */
-#ifdef CONFIG_DEBUG_WX
-#define debug_checkwx() ptdump_check_wx()
+#ifdef CONFIG_ARM_DEBUG_WX
+#define arm_debug_checkwx() ptdump_check_wx()
#else
-#define debug_checkwx() do { } while (0)
+#define arm_debug_checkwx() do { } while (0)
#endif
#endif /* __ASM_PTDUMP_H */
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 771264d4726a..6a9de826ffd3 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -60,6 +60,7 @@ obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o insn.o patch.o
obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o insn.o patch.o
obj-$(CONFIG_JUMP_LABEL) += jump_label.o insn.o patch.o
obj-$(CONFIG_KEXEC_CORE) += machine_kexec.o relocate_kernel.o
+obj-$(CONFIG_VMCORE_INFO) += vmcore_info.o
# Main staffs in KPROBES are in arch/arm/probes/ .
obj-$(CONFIG_KPROBES) += patch.o insn.o
obj-$(CONFIG_OABI_COMPAT) += sys_oabi-compat.o
diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
index 5d07cf9e0044..80ceb5bd2680 100644
--- a/arch/arm/kernel/machine_kexec.c
+++ b/arch/arm/kernel/machine_kexec.c
@@ -198,10 +198,3 @@ void machine_kexec(struct kimage *image)
soft_restart(reboot_entry_phys);
}
-
-void arch_crash_save_vmcoreinfo(void)
-{
-#ifdef CONFIG_ARM_LPAE
- VMCOREINFO_CONFIG(ARM_LPAE);
-#endif
-}
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index ff2299ce1ad7..7b33b157fca0 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -979,7 +979,7 @@ static int __init init_machine_late(void)
}
late_initcall(init_machine_late);
-#ifdef CONFIG_KEXEC
+#ifdef CONFIG_CRASH_RESERVE
/*
* The crash region must be aligned to 128MB to avoid
* zImage relocating below the reserved region.
@@ -1066,7 +1066,7 @@ static void __init reserve_crashkernel(void)
}
#else
static inline void reserve_crashkernel(void) {}
-#endif /* CONFIG_KEXEC */
+#endif /* CONFIG_CRASH_RESERVE*/
void __init hyp_mode_check(void)
{
diff --git a/arch/arm/kernel/vmcore_info.c b/arch/arm/kernel/vmcore_info.c
new file mode 100644
index 000000000000..1437aba47787
--- /dev/null
+++ b/arch/arm/kernel/vmcore_info.c
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/vmcore_info.h>
+
+void arch_crash_save_vmcoreinfo(void)
+{
+#ifdef CONFIG_ARM_LPAE
+ VMCOREINFO_CONFIG(ARM_LPAE);
+#endif
+}
diff --git a/arch/arm/mm/dump.c b/arch/arm/mm/dump.c
index a9381095ab36..cd032522d902 100644
--- a/arch/arm/mm/dump.c
+++ b/arch/arm/mm/dump.c
@@ -349,12 +349,12 @@ static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start)
for (i = 0; i < PTRS_PER_PMD; i++, pmd++) {
addr = start + i * PMD_SIZE;
domain = get_domain_name(pmd);
- if (pmd_none(*pmd) || pmd_large(*pmd) || !pmd_present(*pmd))
+ if (pmd_none(*pmd) || pmd_leaf(*pmd) || !pmd_present(*pmd))
note_page(st, addr, 4, pmd_val(*pmd), domain);
else
walk_pte(st, pmd, addr, domain);
- if (SECTION_SIZE < PMD_SIZE && pmd_large(pmd[1])) {
+ if (SECTION_SIZE < PMD_SIZE && pmd_leaf(pmd[1])) {
addr += SECTION_SIZE;
pmd++;
domain = get_domain_name(pmd);
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index a42e4cd11db2..4c3d78691279 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -458,7 +458,7 @@ static int __mark_rodata_ro(void *unused)
void mark_rodata_ro(void)
{
stop_machine(__mark_rodata_ro, NULL, NULL);
- debug_checkwx();
+ arm_debug_checkwx();
}
#else
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 674ed71573a8..c24e29c0b9a4 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -1814,6 +1814,6 @@ void set_ptes(struct mm_struct *mm, unsigned long addr,
if (--nr == 0)
break;
ptep++;
- pte_val(pteval) += PAGE_SIZE;
+ pteval = pte_next_pfn(pteval);
}
}
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 6e1a2edb2be0..e170c7eb20cc 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1519,7 +1519,7 @@ config ARCH_SUPPORTS_CRASH_DUMP
def_bool y
config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION
- def_bool CRASH_CORE
+ def_bool CRASH_RESERVE
config TRANS_TABLE
def_bool y
@@ -2229,6 +2229,15 @@ config UNWIND_PATCH_PAC_INTO_SCS
select UNWIND_TABLES
select DYNAMIC_SCS
+config ARM64_CONTPTE
+ bool "Contiguous PTE mappings for user memory" if EXPERT
+ depends on TRANSPARENT_HUGEPAGE
+ default y
+ help
+ When enabled, user mappings are configured using the PTE contiguous
+ bit, for any mappings that meet the size and alignment requirements.
+ This reduces TLB pressure and improves performance.
+
endmenu # "Kernel Features"
menu "Boot options"
diff --git a/arch/arm64/include/asm/crash_core.h b/arch/arm64/include/asm/crash_reserve.h
index 9f5c8d339f44..4afe027a4e7b 100644
--- a/arch/arm64/include/asm/crash_core.h
+++ b/arch/arm64/include/asm/crash_reserve.h
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
-#ifndef _ARM64_CRASH_CORE_H
-#define _ARM64_CRASH_CORE_H
+#ifndef _ARM64_CRASH_RESERVE_H
+#define _ARM64_CRASH_RESERVE_H
/* Current arm64 boot protocol requires 2MB alignment */
#define CRASH_ALIGN SZ_2M
diff --git a/arch/arm64/include/asm/kexec.h b/arch/arm64/include/asm/kexec.h
index 9ac9572a3bbe..4d9cc7a76d9c 100644
--- a/arch/arm64/include/asm/kexec.h
+++ b/arch/arm64/include/asm/kexec.h
@@ -80,7 +80,7 @@ static inline void crash_setup_regs(struct pt_regs *newregs,
}
}
-#if defined(CONFIG_KEXEC_CORE) && defined(CONFIG_HIBERNATION)
+#if defined(CONFIG_CRASH_DUMP) && defined(CONFIG_HIBERNATION)
extern bool crash_is_nosave(unsigned long pfn);
extern void crash_prepare_suspend(void);
extern void crash_post_resume(void);
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 8bec85350865..afdd56d26ad7 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -98,7 +98,8 @@ static inline pteval_t __phys_to_pte_val(phys_addr_t phys)
__pte(__phys_to_pte_val((phys_addr_t)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
#define pte_none(pte) (!pte_val(pte))
-#define pte_clear(mm,addr,ptep) set_pte(ptep, __pte(0))
+#define __pte_clear(mm, addr, ptep) \
+ __set_pte(ptep, __pte(0))
#define pte_page(pte) (pfn_to_page(pte_pfn(pte)))
/*
@@ -138,11 +139,15 @@ static inline pteval_t __phys_to_pte_val(phys_addr_t phys)
#define pte_valid_not_user(pte) \
((pte_val(pte) & (PTE_VALID | PTE_USER | PTE_UXN)) == (PTE_VALID | PTE_UXN))
/*
+ * Returns true if the pte is valid and has the contiguous bit set.
+ */
+#define pte_valid_cont(pte) (pte_valid(pte) && pte_cont(pte))
+/*
* Could the pte be present in the TLB? We must check mm_tlb_flush_pending
* so that we don't erroneously return false for pages that have been
* remapped as PROT_NONE but are yet to be flushed from the TLB.
* Note that we can't make any assumptions based on the state of the access
- * flag, since ptep_clear_flush_young() elides a DSB when invalidating the
+ * flag, since __ptep_clear_flush_young() elides a DSB when invalidating the
* TLB.
*/
#define pte_accessible(mm, pte) \
@@ -266,7 +271,7 @@ static inline pte_t pte_mkdevmap(pte_t pte)
return set_pte_bit(pte, __pgprot(PTE_DEVMAP | PTE_SPECIAL));
}
-static inline void set_pte(pte_t *ptep, pte_t pte)
+static inline void __set_pte(pte_t *ptep, pte_t pte)
{
WRITE_ONCE(*ptep, pte);
@@ -280,6 +285,11 @@ static inline void set_pte(pte_t *ptep, pte_t pte)
}
}
+static inline pte_t __ptep_get(pte_t *ptep)
+{
+ return READ_ONCE(*ptep);
+}
+
extern void __sync_icache_dcache(pte_t pteval);
bool pgattr_change_is_safe(u64 old, u64 new);
@@ -307,7 +317,7 @@ static inline void __check_safe_pte_update(struct mm_struct *mm, pte_t *ptep,
if (!IS_ENABLED(CONFIG_DEBUG_VM))
return;
- old_pte = READ_ONCE(*ptep);
+ old_pte = __ptep_get(ptep);
if (!pte_valid(old_pte) || !pte_valid(pte))
return;
@@ -316,7 +326,7 @@ static inline void __check_safe_pte_update(struct mm_struct *mm, pte_t *ptep,
/*
* Check for potential race with hardware updates of the pte
- * (ptep_set_access_flags safely changes valid ptes without going
+ * (__ptep_set_access_flags safely changes valid ptes without going
* through an invalid entry).
*/
VM_WARN_ONCE(!pte_young(pte),
@@ -346,23 +356,38 @@ static inline void __sync_cache_and_tags(pte_t pte, unsigned int nr_pages)
mte_sync_tags(pte, nr_pages);
}
-static inline void set_ptes(struct mm_struct *mm,
- unsigned long __always_unused addr,
- pte_t *ptep, pte_t pte, unsigned int nr)
+/*
+ * Select all bits except the pfn
+ */
+static inline pgprot_t pte_pgprot(pte_t pte)
+{
+ unsigned long pfn = pte_pfn(pte);
+
+ return __pgprot(pte_val(pfn_pte(pfn, __pgprot(0))) ^ pte_val(pte));
+}
+
+#define pte_advance_pfn pte_advance_pfn
+static inline pte_t pte_advance_pfn(pte_t pte, unsigned long nr)
+{
+ return pfn_pte(pte_pfn(pte) + nr, pte_pgprot(pte));
+}
+
+static inline void __set_ptes(struct mm_struct *mm,
+ unsigned long __always_unused addr,
+ pte_t *ptep, pte_t pte, unsigned int nr)
{
page_table_check_ptes_set(mm, ptep, pte, nr);
__sync_cache_and_tags(pte, nr);
for (;;) {
__check_safe_pte_update(mm, ptep, pte);
- set_pte(ptep, pte);
+ __set_pte(ptep, pte);
if (--nr == 0)
break;
ptep++;
- pte_val(pte) += PAGE_SIZE;
+ pte = pte_advance_pfn(pte, 1);
}
}
-#define set_ptes set_ptes
/*
* Huge pte definitions.
@@ -438,16 +463,6 @@ static inline pte_t pte_swp_clear_exclusive(pte_t pte)
return clear_pte_bit(pte, __pgprot(PTE_SWP_EXCLUSIVE));
}
-/*
- * Select all bits except the pfn
- */
-static inline pgprot_t pte_pgprot(pte_t pte)
-{
- unsigned long pfn = pte_pfn(pte);
-
- return __pgprot(pte_val(pfn_pte(pfn, __pgprot(0))) ^ pte_val(pte));
-}
-
#ifdef CONFIG_NUMA_BALANCING
/*
* See the comment in include/linux/pgtable.h
@@ -539,7 +554,7 @@ static inline void __set_pte_at(struct mm_struct *mm,
{
__sync_cache_and_tags(pte, nr);
__check_safe_pte_update(mm, ptep, pte);
- set_pte(ptep, pte);
+ __set_pte(ptep, pte);
}
static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,
@@ -1033,8 +1048,7 @@ static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
return pte_pmd(pte_modify(pmd_pte(pmd), newprot));
}
-#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
-extern int ptep_set_access_flags(struct vm_area_struct *vma,
+extern int __ptep_set_access_flags(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep,
pte_t entry, int dirty);
@@ -1044,7 +1058,8 @@ static inline int pmdp_set_access_flags(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp,
pmd_t entry, int dirty)
{
- return ptep_set_access_flags(vma, address, (pte_t *)pmdp, pmd_pte(entry), dirty);
+ return __ptep_set_access_flags(vma, address, (pte_t *)pmdp,
+ pmd_pte(entry), dirty);
}
static inline int pud_devmap(pud_t pud)
@@ -1078,12 +1093,13 @@ static inline bool pud_user_accessible_page(pud_t pud)
/*
* Atomic pte/pmd modifications.
*/
-#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
-static inline int __ptep_test_and_clear_young(pte_t *ptep)
+static inline int __ptep_test_and_clear_young(struct vm_area_struct *vma,
+ unsigned long address,
+ pte_t *ptep)
{
pte_t old_pte, pte;
- pte = READ_ONCE(*ptep);
+ pte = __ptep_get(ptep);
do {
old_pte = pte;
pte = pte_mkold(pte);
@@ -1094,18 +1110,10 @@ static inline int __ptep_test_and_clear_young(pte_t *ptep)
return pte_young(pte);
}
-static inline int ptep_test_and_clear_young(struct vm_area_struct *vma,
- unsigned long address,
- pte_t *ptep)
-{
- return __ptep_test_and_clear_young(ptep);
-}
-
-#define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
-static inline int ptep_clear_flush_young(struct vm_area_struct *vma,
+static inline int __ptep_clear_flush_young(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep)
{
- int young = ptep_test_and_clear_young(vma, address, ptep);
+ int young = __ptep_test_and_clear_young(vma, address, ptep);
if (young) {
/*
@@ -1128,12 +1136,11 @@ static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma,
unsigned long address,
pmd_t *pmdp)
{
- return ptep_test_and_clear_young(vma, address, (pte_t *)pmdp);
+ return __ptep_test_and_clear_young(vma, address, (pte_t *)pmdp);
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
-#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
-static inline pte_t ptep_get_and_clear(struct mm_struct *mm,
+static inline pte_t __ptep_get_and_clear(struct mm_struct *mm,
unsigned long address, pte_t *ptep)
{
pte_t pte = __pte(xchg_relaxed(&pte_val(*ptep), 0));
@@ -1143,6 +1150,37 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm,
return pte;
}
+static inline void __clear_full_ptes(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, unsigned int nr, int full)
+{
+ for (;;) {
+ __ptep_get_and_clear(mm, addr, ptep);
+ if (--nr == 0)
+ break;
+ ptep++;
+ addr += PAGE_SIZE;
+ }
+}
+
+static inline pte_t __get_and_clear_full_ptes(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep,
+ unsigned int nr, int full)
+{
+ pte_t pte, tmp_pte;
+
+ pte = __ptep_get_and_clear(mm, addr, ptep);
+ while (--nr) {
+ ptep++;
+ addr += PAGE_SIZE;
+ tmp_pte = __ptep_get_and_clear(mm, addr, ptep);
+ if (pte_dirty(tmp_pte))
+ pte = pte_mkdirty(pte);
+ if (pte_young(tmp_pte))
+ pte = pte_mkyoung(pte);
+ }
+ return pte;
+}
+
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
#define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR
static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
@@ -1156,16 +1194,12 @@ static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
-/*
- * ptep_set_wrprotect - mark read-only while trasferring potential hardware
- * dirty status (PTE_DBM && !PTE_RDONLY) to the software PTE_DIRTY bit.
- */
-#define __HAVE_ARCH_PTEP_SET_WRPROTECT
-static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long address, pte_t *ptep)
+static inline void ___ptep_set_wrprotect(struct mm_struct *mm,
+ unsigned long address, pte_t *ptep,
+ pte_t pte)
{
- pte_t old_pte, pte;
+ pte_t old_pte;
- pte = READ_ONCE(*ptep);
do {
old_pte = pte;
pte = pte_wrprotect(pte);
@@ -1174,12 +1208,31 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addres
} while (pte_val(pte) != pte_val(old_pte));
}
+/*
+ * __ptep_set_wrprotect - mark read-only while trasferring potential hardware
+ * dirty status (PTE_DBM && !PTE_RDONLY) to the software PTE_DIRTY bit.
+ */
+static inline void __ptep_set_wrprotect(struct mm_struct *mm,
+ unsigned long address, pte_t *ptep)
+{
+ ___ptep_set_wrprotect(mm, address, ptep, __ptep_get(ptep));
+}
+
+static inline void __wrprotect_ptes(struct mm_struct *mm, unsigned long address,
+ pte_t *ptep, unsigned int nr)
+{
+ unsigned int i;
+
+ for (i = 0; i < nr; i++, address += PAGE_SIZE, ptep++)
+ __ptep_set_wrprotect(mm, address, ptep);
+}
+
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
#define __HAVE_ARCH_PMDP_SET_WRPROTECT
static inline void pmdp_set_wrprotect(struct mm_struct *mm,
unsigned long address, pmd_t *pmdp)
{
- ptep_set_wrprotect(mm, address, (pte_t *)pmdp);
+ __ptep_set_wrprotect(mm, address, (pte_t *)pmdp);
}
#define pmdp_establish pmdp_establish
@@ -1257,7 +1310,7 @@ static inline void arch_swap_restore(swp_entry_t entry, struct folio *folio)
#endif /* CONFIG_ARM64_MTE */
/*
- * On AArch64, the cache coherency is handled via the set_pte_at() function.
+ * On AArch64, the cache coherency is handled via the __set_ptes() function.
*/
static inline void update_mmu_cache_range(struct vm_fault *vmf,
struct vm_area_struct *vma, unsigned long addr, pte_t *ptep,
@@ -1309,6 +1362,282 @@ extern pte_t ptep_modify_prot_start(struct vm_area_struct *vma,
extern void ptep_modify_prot_commit(struct vm_area_struct *vma,
unsigned long addr, pte_t *ptep,
pte_t old_pte, pte_t new_pte);
+
+#ifdef CONFIG_ARM64_CONTPTE
+
+/*
+ * The contpte APIs are used to transparently manage the contiguous bit in ptes
+ * where it is possible and makes sense to do so. The PTE_CONT bit is considered
+ * a private implementation detail of the public ptep API (see below).
+ */
+extern void __contpte_try_fold(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pte);
+extern void __contpte_try_unfold(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pte);
+extern pte_t contpte_ptep_get(pte_t *ptep, pte_t orig_pte);
+extern pte_t contpte_ptep_get_lockless(pte_t *orig_ptep);
+extern void contpte_set_ptes(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pte, unsigned int nr);
+extern void contpte_clear_full_ptes(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, unsigned int nr, int full);
+extern pte_t contpte_get_and_clear_full_ptes(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep,
+ unsigned int nr, int full);
+extern int contpte_ptep_test_and_clear_young(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep);
+extern int contpte_ptep_clear_flush_young(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep);
+extern void contpte_wrprotect_ptes(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, unsigned int nr);
+extern int contpte_ptep_set_access_flags(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep,
+ pte_t entry, int dirty);
+
+static __always_inline void contpte_try_fold(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep, pte_t pte)
+{
+ /*
+ * Only bother trying if both the virtual and physical addresses are
+ * aligned and correspond to the last entry in a contig range. The core
+ * code mostly modifies ranges from low to high, so this is the likely
+ * the last modification in the contig range, so a good time to fold.
+ * We can't fold special mappings, because there is no associated folio.
+ */
+
+ const unsigned long contmask = CONT_PTES - 1;
+ bool valign = ((addr >> PAGE_SHIFT) & contmask) == contmask;
+
+ if (unlikely(valign)) {
+ bool palign = (pte_pfn(pte) & contmask) == contmask;
+
+ if (unlikely(palign &&
+ pte_valid(pte) && !pte_cont(pte) && !pte_special(pte)))
+ __contpte_try_fold(mm, addr, ptep, pte);
+ }
+}
+
+static __always_inline void contpte_try_unfold(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep, pte_t pte)
+{
+ if (unlikely(pte_valid_cont(pte)))
+ __contpte_try_unfold(mm, addr, ptep, pte);
+}
+
+#define pte_batch_hint pte_batch_hint
+static inline unsigned int pte_batch_hint(pte_t *ptep, pte_t pte)
+{
+ if (!pte_valid_cont(pte))
+ return 1;
+
+ return CONT_PTES - (((unsigned long)ptep >> 3) & (CONT_PTES - 1));
+}
+
+/*
+ * The below functions constitute the public API that arm64 presents to the
+ * core-mm to manipulate PTE entries within their page tables (or at least this
+ * is the subset of the API that arm64 needs to implement). These public
+ * versions will automatically and transparently apply the contiguous bit where
+ * it makes sense to do so. Therefore any users that are contig-aware (e.g.
+ * hugetlb, kernel mapper) should NOT use these APIs, but instead use the
+ * private versions, which are prefixed with double underscore. All of these
+ * APIs except for ptep_get_lockless() are expected to be called with the PTL
+ * held. Although the contiguous bit is considered private to the
+ * implementation, it is deliberately allowed to leak through the getters (e.g.
+ * ptep_get()), back to core code. This is required so that pte_leaf_size() can
+ * provide an accurate size for perf_get_pgtable_size(). But this leakage means
+ * its possible a pte will be passed to a setter with the contiguous bit set, so
+ * we explicitly clear the contiguous bit in those cases to prevent accidentally
+ * setting it in the pgtable.
+ */
+
+#define ptep_get ptep_get
+static inline pte_t ptep_get(pte_t *ptep)
+{
+ pte_t pte = __ptep_get(ptep);
+
+ if (likely(!pte_valid_cont(pte)))
+ return pte;
+
+ return contpte_ptep_get(ptep, pte);
+}
+
+#define ptep_get_lockless ptep_get_lockless
+static inline pte_t ptep_get_lockless(pte_t *ptep)
+{
+ pte_t pte = __ptep_get(ptep);
+
+ if (likely(!pte_valid_cont(pte)))
+ return pte;
+
+ return contpte_ptep_get_lockless(ptep);
+}
+
+static inline void set_pte(pte_t *ptep, pte_t pte)
+{
+ /*
+ * We don't have the mm or vaddr so cannot unfold contig entries (since
+ * it requires tlb maintenance). set_pte() is not used in core code, so
+ * this should never even be called. Regardless do our best to service
+ * any call and emit a warning if there is any attempt to set a pte on
+ * top of an existing contig range.
+ */
+ pte_t orig_pte = __ptep_get(ptep);
+
+ WARN_ON_ONCE(pte_valid_cont(orig_pte));
+ __set_pte(ptep, pte_mknoncont(pte));
+}
+
+#define set_ptes set_ptes
+static __always_inline void set_ptes(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pte, unsigned int nr)
+{
+ pte = pte_mknoncont(pte);
+
+ if (likely(nr == 1)) {
+ contpte_try_unfold(mm, addr, ptep, __ptep_get(ptep));
+ __set_ptes(mm, addr, ptep, pte, 1);
+ contpte_try_fold(mm, addr, ptep, pte);
+ } else {
+ contpte_set_ptes(mm, addr, ptep, pte, nr);
+ }
+}
+
+static inline void pte_clear(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep)
+{
+ contpte_try_unfold(mm, addr, ptep, __ptep_get(ptep));
+ __pte_clear(mm, addr, ptep);
+}
+
+#define clear_full_ptes clear_full_ptes
+static inline void clear_full_ptes(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, unsigned int nr, int full)
+{
+ if (likely(nr == 1)) {
+ contpte_try_unfold(mm, addr, ptep, __ptep_get(ptep));
+ __clear_full_ptes(mm, addr, ptep, nr, full);
+ } else {
+ contpte_clear_full_ptes(mm, addr, ptep, nr, full);
+ }
+}
+
+#define get_and_clear_full_ptes get_and_clear_full_ptes
+static inline pte_t get_and_clear_full_ptes(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep,
+ unsigned int nr, int full)
+{
+ pte_t pte;
+
+ if (likely(nr == 1)) {
+ contpte_try_unfold(mm, addr, ptep, __ptep_get(ptep));
+ pte = __get_and_clear_full_ptes(mm, addr, ptep, nr, full);
+ } else {
+ pte = contpte_get_and_clear_full_ptes(mm, addr, ptep, nr, full);
+ }
+
+ return pte;
+}
+
+#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
+static inline pte_t ptep_get_and_clear(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep)
+{
+ contpte_try_unfold(mm, addr, ptep, __ptep_get(ptep));
+ return __ptep_get_and_clear(mm, addr, ptep);
+}
+
+#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
+static inline int ptep_test_and_clear_young(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep)
+{
+ pte_t orig_pte = __ptep_get(ptep);
+
+ if (likely(!pte_valid_cont(orig_pte)))
+ return __ptep_test_and_clear_young(vma, addr, ptep);
+
+ return contpte_ptep_test_and_clear_young(vma, addr, ptep);
+}
+
+#define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
+static inline int ptep_clear_flush_young(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep)
+{
+ pte_t orig_pte = __ptep_get(ptep);
+
+ if (likely(!pte_valid_cont(orig_pte)))
+ return __ptep_clear_flush_young(vma, addr, ptep);
+
+ return contpte_ptep_clear_flush_young(vma, addr, ptep);
+}
+
+#define wrprotect_ptes wrprotect_ptes
+static __always_inline void wrprotect_ptes(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep, unsigned int nr)
+{
+ if (likely(nr == 1)) {
+ /*
+ * Optimization: wrprotect_ptes() can only be called for present
+ * ptes so we only need to check contig bit as condition for
+ * unfold, and we can remove the contig bit from the pte we read
+ * to avoid re-reading. This speeds up fork() which is sensitive
+ * for order-0 folios. Equivalent to contpte_try_unfold().
+ */
+ pte_t orig_pte = __ptep_get(ptep);
+
+ if (unlikely(pte_cont(orig_pte))) {
+ __contpte_try_unfold(mm, addr, ptep, orig_pte);
+ orig_pte = pte_mknoncont(orig_pte);
+ }
+ ___ptep_set_wrprotect(mm, addr, ptep, orig_pte);
+ } else {
+ contpte_wrprotect_ptes(mm, addr, ptep, nr);
+ }
+}
+
+#define __HAVE_ARCH_PTEP_SET_WRPROTECT
+static inline void ptep_set_wrprotect(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep)
+{
+ wrprotect_ptes(mm, addr, ptep, 1);
+}
+
+#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
+static inline int ptep_set_access_flags(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep,
+ pte_t entry, int dirty)
+{
+ pte_t orig_pte = __ptep_get(ptep);
+
+ entry = pte_mknoncont(entry);
+
+ if (likely(!pte_valid_cont(orig_pte)))
+ return __ptep_set_access_flags(vma, addr, ptep, entry, dirty);
+
+ return contpte_ptep_set_access_flags(vma, addr, ptep, entry, dirty);
+}
+
+#else /* CONFIG_ARM64_CONTPTE */
+
+#define ptep_get __ptep_get
+#define set_pte __set_pte
+#define set_ptes __set_ptes
+#define pte_clear __pte_clear
+#define clear_full_ptes __clear_full_ptes
+#define get_and_clear_full_ptes __get_and_clear_full_ptes
+#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
+#define ptep_get_and_clear __ptep_get_and_clear
+#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
+#define ptep_test_and_clear_young __ptep_test_and_clear_young
+#define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
+#define ptep_clear_flush_young __ptep_clear_flush_young
+#define __HAVE_ARCH_PTEP_SET_WRPROTECT
+#define ptep_set_wrprotect __ptep_set_wrprotect
+#define wrprotect_ptes __wrprotect_ptes
+#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
+#define ptep_set_access_flags __ptep_set_access_flags
+
+#endif /* CONFIG_ARM64_CONTPTE */
+
#endif /* !__ASSEMBLY__ */
#endif /* __ASM_PGTABLE_H */
diff --git a/arch/arm64/include/asm/ptdump.h b/arch/arm64/include/asm/ptdump.h
index 581caac525b0..5b1701c76d1c 100644
--- a/arch/arm64/include/asm/ptdump.h
+++ b/arch/arm64/include/asm/ptdump.h
@@ -29,13 +29,6 @@ void __init ptdump_debugfs_register(struct ptdump_info *info, const char *name);
static inline void ptdump_debugfs_register(struct ptdump_info *info,
const char *name) { }
#endif
-void ptdump_check_wx(void);
#endif /* CONFIG_PTDUMP_CORE */
-#ifdef CONFIG_DEBUG_WX
-#define debug_checkwx() ptdump_check_wx()
-#else
-#define debug_checkwx() do { } while (0)
-#endif
-
#endif /* __ASM_PTDUMP_H */
diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h
index 1deb5d789c2e..3b0e8248e1a4 100644
--- a/arch/arm64/include/asm/tlbflush.h
+++ b/arch/arm64/include/asm/tlbflush.h
@@ -422,7 +422,7 @@ do { \
#define __flush_s2_tlb_range_op(op, start, pages, stride, tlb_level) \
__flush_tlb_range_op(op, start, pages, stride, 0, tlb_level, false, kvm_lpa2_is_enabled());
-static inline void __flush_tlb_range(struct vm_area_struct *vma,
+static inline void __flush_tlb_range_nosync(struct vm_area_struct *vma,
unsigned long start, unsigned long end,
unsigned long stride, bool last_level,
int tlb_level)
@@ -456,10 +456,19 @@ static inline void __flush_tlb_range(struct vm_area_struct *vma,
__flush_tlb_range_op(vae1is, start, pages, stride, asid,
tlb_level, true, lpa2_is_enabled());
- dsb(ish);
mmu_notifier_arch_invalidate_secondary_tlbs(vma->vm_mm, start, end);
}
+static inline void __flush_tlb_range(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end,
+ unsigned long stride, bool last_level,
+ int tlb_level)
+{
+ __flush_tlb_range_nosync(vma, start, end, stride,
+ last_level, tlb_level);
+ dsb(ish);
+}
+
static inline void flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
index 14b4a179bad3..763824963ed1 100644
--- a/arch/arm64/kernel/Makefile
+++ b/arch/arm64/kernel/Makefile
@@ -65,7 +65,7 @@ obj-$(CONFIG_KEXEC_FILE) += machine_kexec_file.o kexec_image.o
obj-$(CONFIG_ARM64_RELOC_TEST) += arm64-reloc-test.o
arm64-reloc-test-y := reloc_test_core.o reloc_test_syms.o
obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
-obj-$(CONFIG_CRASH_CORE) += crash_core.o
+obj-$(CONFIG_VMCORE_INFO) += vmcore_info.o
obj-$(CONFIG_ARM_SDE_INTERFACE) += sdei.o
obj-$(CONFIG_ARM64_PTR_AUTH) += pointer_auth.o
obj-$(CONFIG_ARM64_MTE) += mte.o
diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
index 0228001347be..9afcc690fe73 100644
--- a/arch/arm64/kernel/efi.c
+++ b/arch/arm64/kernel/efi.c
@@ -103,7 +103,7 @@ static int __init set_permissions(pte_t *ptep, unsigned long addr, void *data)
{
struct set_perm_data *spd = data;
const efi_memory_desc_t *md = spd->md;
- pte_t pte = READ_ONCE(*ptep);
+ pte_t pte = __ptep_get(ptep);
if (md->attribute & EFI_MEMORY_RO)
pte = set_pte_bit(pte, __pgprot(PTE_RDONLY));
@@ -111,7 +111,7 @@ static int __init set_permissions(pte_t *ptep, unsigned long addr, void *data)
pte = set_pte_bit(pte, __pgprot(PTE_PXN));
else if (system_supports_bti_kernel() && spd->has_bti)
pte = set_pte_bit(pte, __pgprot(PTE_GP));
- set_pte(ptep, pte);
+ __set_pte(ptep, pte);
return 0;
}
diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c
index b38aae5b488d..82e2203d86a3 100644
--- a/arch/arm64/kernel/machine_kexec.c
+++ b/arch/arm64/kernel/machine_kexec.c
@@ -255,7 +255,7 @@ void machine_crash_shutdown(struct pt_regs *regs)
pr_info("Starting crashdump kernel...\n");
}
-#ifdef CONFIG_HIBERNATION
+#if defined(CONFIG_CRASH_DUMP) && defined(CONFIG_HIBERNATION)
/*
* To preserve the crash dump kernel image, the relevant memory segments
* should be mapped again around the hibernation.
diff --git a/arch/arm64/kernel/machine_kexec_file.c b/arch/arm64/kernel/machine_kexec_file.c
index 0e017358f4ba..af1ca875c52c 100644
--- a/arch/arm64/kernel/machine_kexec_file.c
+++ b/arch/arm64/kernel/machine_kexec_file.c
@@ -39,6 +39,7 @@ int arch_kimage_file_post_load_cleanup(struct kimage *image)
return kexec_image_post_load_cleanup_default(image);
}
+#ifdef CONFIG_CRASH_DUMP
static int prepare_elf_headers(void **addr, unsigned long *sz)
{
struct crash_mem *cmem;
@@ -80,6 +81,7 @@ out:
kfree(cmem);
return ret;
}
+#endif
/*
* Tries to add the initrd and DTB to the image. If it is not possible to find
@@ -93,8 +95,8 @@ int load_other_segments(struct kimage *image,
char *cmdline)
{
struct kexec_buf kbuf;
- void *headers, *dtb = NULL;
- unsigned long headers_sz, initrd_load_addr = 0, dtb_len,
+ void *dtb = NULL;
+ unsigned long initrd_load_addr = 0, dtb_len,
orig_segments = image->nr_segments;
int ret = 0;
@@ -102,7 +104,10 @@ int load_other_segments(struct kimage *image,
/* not allocate anything below the kernel */
kbuf.buf_min = kernel_load_addr + kernel_size;
+#ifdef CONFIG_CRASH_DUMP
/* load elf core header */
+ void *headers;
+ unsigned long headers_sz;
if (image->type == KEXEC_TYPE_CRASH) {
ret = prepare_elf_headers(&headers, &headers_sz);
if (ret) {
@@ -130,6 +135,7 @@ int load_other_segments(struct kimage *image,
kexec_dprintk("Loaded elf core header at 0x%lx bufsz=0x%lx memsz=0x%lx\n",
image->elf_load_addr, kbuf.bufsz, kbuf.memsz);
}
+#endif
/* load initrd */
if (initrd) {
diff --git a/arch/arm64/kernel/mte.c b/arch/arm64/kernel/mte.c
index a41ef3213e1e..dcdcccd40891 100644
--- a/arch/arm64/kernel/mte.c
+++ b/arch/arm64/kernel/mte.c
@@ -67,7 +67,7 @@ int memcmp_pages(struct page *page1, struct page *page2)
/*
* If the page content is identical but at least one of the pages is
* tagged, return non-zero to avoid KSM merging. If only one of the
- * pages is tagged, set_pte_at() may zero or change the tags of the
+ * pages is tagged, __set_ptes() may zero or change the tags of the
* other page via mte_sync_tags().
*/
if (page_mte_tagged(page1) || page_mte_tagged(page2))
diff --git a/arch/arm64/kernel/crash_core.c b/arch/arm64/kernel/vmcore_info.c
index 66cde752cd74..b19d5d6cb8b3 100644
--- a/arch/arm64/kernel/crash_core.c
+++ b/arch/arm64/kernel/vmcore_info.c
@@ -4,7 +4,7 @@
* Copyright (C) Huawei Futurewei Technologies.
*/
-#include <linux/crash_core.h>
+#include <linux/vmcore_info.h>
#include <asm/cpufeature.h>
#include <asm/memory.h>
#include <asm/pgtable-hwdef.h>
@@ -23,7 +23,6 @@ void arch_crash_save_vmcoreinfo(void)
/* Please note VMCOREINFO_NUMBER() uses "%d", not "%x" */
vmcoreinfo_append_str("NUMBER(MODULES_VADDR)=0x%lx\n", MODULES_VADDR);
vmcoreinfo_append_str("NUMBER(MODULES_END)=0x%lx\n", MODULES_END);
- vmcoreinfo_append_str("NUMBER(VMALLOC_START)=0x%lx\n", VMALLOC_START);
vmcoreinfo_append_str("NUMBER(VMALLOC_END)=0x%lx\n", VMALLOC_END);
vmcoreinfo_append_str("NUMBER(VMEMMAP_START)=0x%lx\n", VMEMMAP_START);
vmcoreinfo_append_str("NUMBER(VMEMMAP_END)=0x%lx\n", VMEMMAP_END);
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index aaf1d4939739..629145fd3161 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -1072,7 +1072,7 @@ int kvm_vm_ioctl_mte_copy_tags(struct kvm *kvm,
} else {
/*
* Only locking to serialise with a concurrent
- * set_pte_at() in the VMM but still overriding the
+ * __set_ptes() in the VMM but still overriding the
* tags, hence ignoring the return value.
*/
try_page_mte_tagging(page);
diff --git a/arch/arm64/mm/Makefile b/arch/arm64/mm/Makefile
index dbd1bc95967d..60454256945b 100644
--- a/arch/arm64/mm/Makefile
+++ b/arch/arm64/mm/Makefile
@@ -3,6 +3,7 @@ obj-y := dma-mapping.o extable.o fault.o init.o \
cache.o copypage.o flush.o \
ioremap.o mmap.o pgd.o mmu.o \
context.o proc.o pageattr.o fixmap.o
+obj-$(CONFIG_ARM64_CONTPTE) += contpte.o
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
obj-$(CONFIG_PTDUMP_CORE) += ptdump.o
obj-$(CONFIG_PTDUMP_DEBUGFS) += ptdump_debugfs.o
diff --git a/arch/arm64/mm/contpte.c b/arch/arm64/mm/contpte.c
new file mode 100644
index 000000000000..1b64b4c3f8bf
--- /dev/null
+++ b/arch/arm64/mm/contpte.c
@@ -0,0 +1,408 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2023 ARM Ltd.
+ */
+
+#include <linux/mm.h>
+#include <linux/efi.h>
+#include <linux/export.h>
+#include <asm/tlbflush.h>
+
+static inline bool mm_is_user(struct mm_struct *mm)
+{
+ /*
+ * Don't attempt to apply the contig bit to kernel mappings, because
+ * dynamically adding/removing the contig bit can cause page faults.
+ * These racing faults are ok for user space, since they get serialized
+ * on the PTL. But kernel mappings can't tolerate faults.
+ */
+ if (unlikely(mm_is_efi(mm)))
+ return false;
+ return mm != &init_mm;
+}
+
+static inline pte_t *contpte_align_down(pte_t *ptep)
+{
+ return PTR_ALIGN_DOWN(ptep, sizeof(*ptep) * CONT_PTES);
+}
+
+static void contpte_try_unfold_partial(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, unsigned int nr)
+{
+ /*
+ * Unfold any partially covered contpte block at the beginning and end
+ * of the range.
+ */
+
+ if (ptep != contpte_align_down(ptep) || nr < CONT_PTES)
+ contpte_try_unfold(mm, addr, ptep, __ptep_get(ptep));
+
+ if (ptep + nr != contpte_align_down(ptep + nr)) {
+ unsigned long last_addr = addr + PAGE_SIZE * (nr - 1);
+ pte_t *last_ptep = ptep + nr - 1;
+
+ contpte_try_unfold(mm, last_addr, last_ptep,
+ __ptep_get(last_ptep));
+ }
+}
+
+static void contpte_convert(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pte)
+{
+ struct vm_area_struct vma = TLB_FLUSH_VMA(mm, 0);
+ unsigned long start_addr;
+ pte_t *start_ptep;
+ int i;
+
+ start_ptep = ptep = contpte_align_down(ptep);
+ start_addr = addr = ALIGN_DOWN(addr, CONT_PTE_SIZE);
+ pte = pfn_pte(ALIGN_DOWN(pte_pfn(pte), CONT_PTES), pte_pgprot(pte));
+
+ for (i = 0; i < CONT_PTES; i++, ptep++, addr += PAGE_SIZE) {
+ pte_t ptent = __ptep_get_and_clear(mm, addr, ptep);
+
+ if (pte_dirty(ptent))
+ pte = pte_mkdirty(pte);
+
+ if (pte_young(ptent))
+ pte = pte_mkyoung(pte);
+ }
+
+ __flush_tlb_range(&vma, start_addr, addr, PAGE_SIZE, true, 3);
+
+ __set_ptes(mm, start_addr, start_ptep, pte, CONT_PTES);
+}
+
+void __contpte_try_fold(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pte)
+{
+ /*
+ * We have already checked that the virtual and pysical addresses are
+ * correctly aligned for a contpte mapping in contpte_try_fold() so the
+ * remaining checks are to ensure that the contpte range is fully
+ * covered by a single folio, and ensure that all the ptes are valid
+ * with contiguous PFNs and matching prots. We ignore the state of the
+ * access and dirty bits for the purpose of deciding if its a contiguous
+ * range; the folding process will generate a single contpte entry which
+ * has a single access and dirty bit. Those 2 bits are the logical OR of
+ * their respective bits in the constituent pte entries. In order to
+ * ensure the contpte range is covered by a single folio, we must
+ * recover the folio from the pfn, but special mappings don't have a
+ * folio backing them. Fortunately contpte_try_fold() already checked
+ * that the pte is not special - we never try to fold special mappings.
+ * Note we can't use vm_normal_page() for this since we don't have the
+ * vma.
+ */
+
+ unsigned long folio_start, folio_end;
+ unsigned long cont_start, cont_end;
+ pte_t expected_pte, subpte;
+ struct folio *folio;
+ struct page *page;
+ unsigned long pfn;
+ pte_t *orig_ptep;
+ pgprot_t prot;
+
+ int i;
+
+ if (!mm_is_user(mm))
+ return;
+
+ page = pte_page(pte);
+ folio = page_folio(page);
+ folio_start = addr - (page - &folio->page) * PAGE_SIZE;
+ folio_end = folio_start + folio_nr_pages(folio) * PAGE_SIZE;
+ cont_start = ALIGN_DOWN(addr, CONT_PTE_SIZE);
+ cont_end = cont_start + CONT_PTE_SIZE;
+
+ if (folio_start > cont_start || folio_end < cont_end)
+ return;
+
+ pfn = ALIGN_DOWN(pte_pfn(pte), CONT_PTES);
+ prot = pte_pgprot(pte_mkold(pte_mkclean(pte)));
+ expected_pte = pfn_pte(pfn, prot);
+ orig_ptep = ptep;
+ ptep = contpte_align_down(ptep);
+
+ for (i = 0; i < CONT_PTES; i++) {
+ subpte = pte_mkold(pte_mkclean(__ptep_get(ptep)));
+ if (!pte_same(subpte, expected_pte))
+ return;
+ expected_pte = pte_advance_pfn(expected_pte, 1);
+ ptep++;
+ }
+
+ pte = pte_mkcont(pte);
+ contpte_convert(mm, addr, orig_ptep, pte);
+}
+EXPORT_SYMBOL_GPL(__contpte_try_fold);
+
+void __contpte_try_unfold(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pte)
+{
+ /*
+ * We have already checked that the ptes are contiguous in
+ * contpte_try_unfold(), so just check that the mm is user space.
+ */
+ if (!mm_is_user(mm))
+ return;
+
+ pte = pte_mknoncont(pte);
+ contpte_convert(mm, addr, ptep, pte);
+}
+EXPORT_SYMBOL_GPL(__contpte_try_unfold);
+
+pte_t contpte_ptep_get(pte_t *ptep, pte_t orig_pte)
+{
+ /*
+ * Gather access/dirty bits, which may be populated in any of the ptes
+ * of the contig range. We are guaranteed to be holding the PTL, so any
+ * contiguous range cannot be unfolded or otherwise modified under our
+ * feet.
+ */
+
+ pte_t pte;
+ int i;
+
+ ptep = contpte_align_down(ptep);
+
+ for (i = 0; i < CONT_PTES; i++, ptep++) {
+ pte = __ptep_get(ptep);
+
+ if (pte_dirty(pte))
+ orig_pte = pte_mkdirty(orig_pte);
+
+ if (pte_young(pte))
+ orig_pte = pte_mkyoung(orig_pte);
+ }
+
+ return orig_pte;
+}
+EXPORT_SYMBOL_GPL(contpte_ptep_get);
+
+pte_t contpte_ptep_get_lockless(pte_t *orig_ptep)
+{
+ /*
+ * The ptep_get_lockless() API requires us to read and return *orig_ptep
+ * so that it is self-consistent, without the PTL held, so we may be
+ * racing with other threads modifying the pte. Usually a READ_ONCE()
+ * would suffice, but for the contpte case, we also need to gather the
+ * access and dirty bits from across all ptes in the contiguous block,
+ * and we can't read all of those neighbouring ptes atomically, so any
+ * contiguous range may be unfolded/modified/refolded under our feet.
+ * Therefore we ensure we read a _consistent_ contpte range by checking
+ * that all ptes in the range are valid and have CONT_PTE set, that all
+ * pfns are contiguous and that all pgprots are the same (ignoring
+ * access/dirty). If we find a pte that is not consistent, then we must
+ * be racing with an update so start again. If the target pte does not
+ * have CONT_PTE set then that is considered consistent on its own
+ * because it is not part of a contpte range.
+ */
+
+ pgprot_t orig_prot;
+ unsigned long pfn;
+ pte_t orig_pte;
+ pgprot_t prot;
+ pte_t *ptep;
+ pte_t pte;
+ int i;
+
+retry:
+ orig_pte = __ptep_get(orig_ptep);
+
+ if (!pte_valid_cont(orig_pte))
+ return orig_pte;
+
+ orig_prot = pte_pgprot(pte_mkold(pte_mkclean(orig_pte)));
+ ptep = contpte_align_down(orig_ptep);
+ pfn = pte_pfn(orig_pte) - (orig_ptep - ptep);
+
+ for (i = 0; i < CONT_PTES; i++, ptep++, pfn++) {
+ pte = __ptep_get(ptep);
+ prot = pte_pgprot(pte_mkold(pte_mkclean(pte)));
+
+ if (!pte_valid_cont(pte) ||
+ pte_pfn(pte) != pfn ||
+ pgprot_val(prot) != pgprot_val(orig_prot))
+ goto retry;
+
+ if (pte_dirty(pte))
+ orig_pte = pte_mkdirty(orig_pte);
+
+ if (pte_young(pte))
+ orig_pte = pte_mkyoung(orig_pte);
+ }
+
+ return orig_pte;
+}
+EXPORT_SYMBOL_GPL(contpte_ptep_get_lockless);
+
+void contpte_set_ptes(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pte, unsigned int nr)
+{
+ unsigned long next;
+ unsigned long end;
+ unsigned long pfn;
+ pgprot_t prot;
+
+ /*
+ * The set_ptes() spec guarantees that when nr > 1, the initial state of
+ * all ptes is not-present. Therefore we never need to unfold or
+ * otherwise invalidate a range before we set the new ptes.
+ * contpte_set_ptes() should never be called for nr < 2.
+ */
+ VM_WARN_ON(nr == 1);
+
+ if (!mm_is_user(mm))
+ return __set_ptes(mm, addr, ptep, pte, nr);
+
+ end = addr + (nr << PAGE_SHIFT);
+ pfn = pte_pfn(pte);
+ prot = pte_pgprot(pte);
+
+ do {
+ next = pte_cont_addr_end(addr, end);
+ nr = (next - addr) >> PAGE_SHIFT;
+ pte = pfn_pte(pfn, prot);
+
+ if (((addr | next | (pfn << PAGE_SHIFT)) & ~CONT_PTE_MASK) == 0)
+ pte = pte_mkcont(pte);
+ else
+ pte = pte_mknoncont(pte);
+
+ __set_ptes(mm, addr, ptep, pte, nr);
+
+ addr = next;
+ ptep += nr;
+ pfn += nr;
+
+ } while (addr != end);
+}
+EXPORT_SYMBOL_GPL(contpte_set_ptes);
+
+void contpte_clear_full_ptes(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, unsigned int nr, int full)
+{
+ contpte_try_unfold_partial(mm, addr, ptep, nr);
+ __clear_full_ptes(mm, addr, ptep, nr, full);
+}
+EXPORT_SYMBOL_GPL(contpte_clear_full_ptes);
+
+pte_t contpte_get_and_clear_full_ptes(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep,
+ unsigned int nr, int full)
+{
+ contpte_try_unfold_partial(mm, addr, ptep, nr);
+ return __get_and_clear_full_ptes(mm, addr, ptep, nr, full);
+}
+EXPORT_SYMBOL_GPL(contpte_get_and_clear_full_ptes);
+
+int contpte_ptep_test_and_clear_young(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep)
+{
+ /*
+ * ptep_clear_flush_young() technically requires us to clear the access
+ * flag for a _single_ pte. However, the core-mm code actually tracks
+ * access/dirty per folio, not per page. And since we only create a
+ * contig range when the range is covered by a single folio, we can get
+ * away with clearing young for the whole contig range here, so we avoid
+ * having to unfold.
+ */
+
+ int young = 0;
+ int i;
+
+ ptep = contpte_align_down(ptep);
+ addr = ALIGN_DOWN(addr, CONT_PTE_SIZE);
+
+ for (i = 0; i < CONT_PTES; i++, ptep++, addr += PAGE_SIZE)
+ young |= __ptep_test_and_clear_young(vma, addr, ptep);
+
+ return young;
+}
+EXPORT_SYMBOL_GPL(contpte_ptep_test_and_clear_young);
+
+int contpte_ptep_clear_flush_young(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep)
+{
+ int young;
+
+ young = contpte_ptep_test_and_clear_young(vma, addr, ptep);
+
+ if (young) {
+ /*
+ * See comment in __ptep_clear_flush_young(); same rationale for
+ * eliding the trailing DSB applies here.
+ */
+ addr = ALIGN_DOWN(addr, CONT_PTE_SIZE);
+ __flush_tlb_range_nosync(vma, addr, addr + CONT_PTE_SIZE,
+ PAGE_SIZE, true, 3);
+ }
+
+ return young;
+}
+EXPORT_SYMBOL_GPL(contpte_ptep_clear_flush_young);
+
+void contpte_wrprotect_ptes(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, unsigned int nr)
+{
+ /*
+ * If wrprotecting an entire contig range, we can avoid unfolding. Just
+ * set wrprotect and wait for the later mmu_gather flush to invalidate
+ * the tlb. Until the flush, the page may or may not be wrprotected.
+ * After the flush, it is guaranteed wrprotected. If it's a partial
+ * range though, we must unfold, because we can't have a case where
+ * CONT_PTE is set but wrprotect applies to a subset of the PTEs; this
+ * would cause it to continue to be unpredictable after the flush.
+ */
+
+ contpte_try_unfold_partial(mm, addr, ptep, nr);
+ __wrprotect_ptes(mm, addr, ptep, nr);
+}
+EXPORT_SYMBOL_GPL(contpte_wrprotect_ptes);
+
+int contpte_ptep_set_access_flags(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep,
+ pte_t entry, int dirty)
+{
+ unsigned long start_addr;
+ pte_t orig_pte;
+ int i;
+
+ /*
+ * Gather the access/dirty bits for the contiguous range. If nothing has
+ * changed, its a noop.
+ */
+ orig_pte = pte_mknoncont(ptep_get(ptep));
+ if (pte_val(orig_pte) == pte_val(entry))
+ return 0;
+
+ /*
+ * We can fix up access/dirty bits without having to unfold the contig
+ * range. But if the write bit is changing, we must unfold.
+ */
+ if (pte_write(orig_pte) == pte_write(entry)) {
+ /*
+ * For HW access management, we technically only need to update
+ * the flag on a single pte in the range. But for SW access
+ * management, we need to update all the ptes to prevent extra
+ * faults. Avoid per-page tlb flush in __ptep_set_access_flags()
+ * and instead flush the whole range at the end.
+ */
+ ptep = contpte_align_down(ptep);
+ start_addr = addr = ALIGN_DOWN(addr, CONT_PTE_SIZE);
+
+ for (i = 0; i < CONT_PTES; i++, ptep++, addr += PAGE_SIZE)
+ __ptep_set_access_flags(vma, addr, ptep, entry, 0);
+
+ if (dirty)
+ __flush_tlb_range(vma, start_addr, addr,
+ PAGE_SIZE, true, 3);
+ } else {
+ __contpte_try_unfold(vma->vm_mm, addr, ptep, orig_pte);
+ __ptep_set_access_flags(vma, addr, ptep, entry, dirty);
+ }
+
+ return 1;
+}
+EXPORT_SYMBOL_GPL(contpte_ptep_set_access_flags);
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index 60265ede48fe..8251e2fea9c7 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -191,7 +191,7 @@ static void show_pte(unsigned long addr)
if (!ptep)
break;
- pte = READ_ONCE(*ptep);
+ pte = __ptep_get(ptep);
pr_cont(", pte=%016llx", pte_val(pte));
pte_unmap(ptep);
} while(0);
@@ -205,16 +205,16 @@ static void show_pte(unsigned long addr)
*
* It needs to cope with hardware update of the accessed/dirty state by other
* agents in the system and can safely skip the __sync_icache_dcache() call as,
- * like set_pte_at(), the PTE is never changed from no-exec to exec here.
+ * like __set_ptes(), the PTE is never changed from no-exec to exec here.
*
* Returns whether or not the PTE actually changed.
*/
-int ptep_set_access_flags(struct vm_area_struct *vma,
- unsigned long address, pte_t *ptep,
- pte_t entry, int dirty)
+int __ptep_set_access_flags(struct vm_area_struct *vma,
+ unsigned long address, pte_t *ptep,
+ pte_t entry, int dirty)
{
pteval_t old_pteval, pteval;
- pte_t pte = READ_ONCE(*ptep);
+ pte_t pte = __ptep_get(ptep);
if (pte_same(pte, entry))
return 0;
diff --git a/arch/arm64/mm/fixmap.c b/arch/arm64/mm/fixmap.c
index d22506e9c7fd..de1e09d986ad 100644
--- a/arch/arm64/mm/fixmap.c
+++ b/arch/arm64/mm/fixmap.c
@@ -124,9 +124,9 @@ void __set_fixmap(enum fixed_addresses idx,
ptep = fixmap_pte(addr);
if (pgprot_val(flags)) {
- set_pte(ptep, pfn_pte(phys >> PAGE_SHIFT, flags));
+ __set_pte(ptep, pfn_pte(phys >> PAGE_SHIFT, flags));
} else {
- pte_clear(&init_mm, addr, ptep);
+ __pte_clear(&init_mm, addr, ptep);
flush_tlb_kernel_range(addr, addr+PAGE_SIZE);
}
}
diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c
index 8116ac599f80..0f0e10bb0a95 100644
--- a/arch/arm64/mm/hugetlbpage.c
+++ b/arch/arm64/mm/hugetlbpage.c
@@ -45,13 +45,6 @@ void __init arm64_hugetlb_cma_reserve(void)
else
order = CONT_PMD_SHIFT - PAGE_SHIFT;
- /*
- * HugeTLB CMA reservation is required for gigantic
- * huge pages which could not be allocated via the
- * page allocator. Just warn if there is any change
- * breaking this assumption.
- */
- WARN_ON(order <= MAX_PAGE_ORDER);
hugetlb_cma_reserve(order);
}
#endif /* CONFIG_CMA */
@@ -152,14 +145,14 @@ pte_t huge_ptep_get(pte_t *ptep)
{
int ncontig, i;
size_t pgsize;
- pte_t orig_pte = ptep_get(ptep);
+ pte_t orig_pte = __ptep_get(ptep);
if (!pte_present(orig_pte) || !pte_cont(orig_pte))
return orig_pte;
ncontig = num_contig_ptes(page_size(pte_page(orig_pte)), &pgsize);
for (i = 0; i < ncontig; i++, ptep++) {
- pte_t pte = ptep_get(ptep);
+ pte_t pte = __ptep_get(ptep);
if (pte_dirty(pte))
orig_pte = pte_mkdirty(orig_pte);
@@ -184,11 +177,11 @@ static pte_t get_clear_contig(struct mm_struct *mm,
unsigned long pgsize,
unsigned long ncontig)
{
- pte_t orig_pte = ptep_get(ptep);
+ pte_t orig_pte = __ptep_get(ptep);
unsigned long i;
for (i = 0; i < ncontig; i++, addr += pgsize, ptep++) {
- pte_t pte = ptep_get_and_clear(mm, addr, ptep);
+ pte_t pte = __ptep_get_and_clear(mm, addr, ptep);
/*
* If HW_AFDBM is enabled, then the HW could turn on
@@ -236,7 +229,7 @@ static void clear_flush(struct mm_struct *mm,
unsigned long i, saddr = addr;
for (i = 0; i < ncontig; i++, addr += pgsize, ptep++)
- ptep_clear(mm, addr, ptep);
+ __ptep_get_and_clear(mm, addr, ptep);
flush_tlb_range(&vma, saddr, addr);
}
@@ -254,12 +247,12 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
if (!pte_present(pte)) {
for (i = 0; i < ncontig; i++, ptep++, addr += pgsize)
- set_pte_at(mm, addr, ptep, pte);
+ __set_ptes(mm, addr, ptep, pte, 1);
return;
}
if (!pte_cont(pte)) {
- set_pte_at(mm, addr, ptep, pte);
+ __set_ptes(mm, addr, ptep, pte, 1);
return;
}
@@ -270,7 +263,7 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
clear_flush(mm, addr, ptep, pgsize, ncontig);
for (i = 0; i < ncontig; i++, ptep++, addr += pgsize, pfn += dpfn)
- set_pte_at(mm, addr, ptep, pfn_pte(pfn, hugeprot));
+ __set_ptes(mm, addr, ptep, pfn_pte(pfn, hugeprot), 1);
}
pte_t *huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
@@ -400,7 +393,7 @@ void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
ncontig = num_contig_ptes(sz, &pgsize);
for (i = 0; i < ncontig; i++, addr += pgsize, ptep++)
- pte_clear(mm, addr, ptep);
+ __pte_clear(mm, addr, ptep);
}
pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
@@ -408,10 +401,10 @@ pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
{
int ncontig;
size_t pgsize;
- pte_t orig_pte = ptep_get(ptep);
+ pte_t orig_pte = __ptep_get(ptep);
if (!pte_cont(orig_pte))
- return ptep_get_and_clear(mm, addr, ptep);
+ return __ptep_get_and_clear(mm, addr, ptep);
ncontig = find_num_contig(mm, addr, ptep, &pgsize);
@@ -431,11 +424,11 @@ static int __cont_access_flags_changed(pte_t *ptep, pte_t pte, int ncontig)
{
int i;
- if (pte_write(pte) != pte_write(ptep_get(ptep)))
+ if (pte_write(pte) != pte_write(__ptep_get(ptep)))
return 1;
for (i = 0; i < ncontig; i++) {
- pte_t orig_pte = ptep_get(ptep + i);
+ pte_t orig_pte = __ptep_get(ptep + i);
if (pte_dirty(pte) != pte_dirty(orig_pte))
return 1;
@@ -459,7 +452,7 @@ int huge_ptep_set_access_flags(struct vm_area_struct *vma,
pte_t orig_pte;
if (!pte_cont(pte))
- return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
+ return __ptep_set_access_flags(vma, addr, ptep, pte, dirty);
ncontig = find_num_contig(mm, addr, ptep, &pgsize);
dpfn = pgsize >> PAGE_SHIFT;
@@ -478,7 +471,7 @@ int huge_ptep_set_access_flags(struct vm_area_struct *vma,
hugeprot = pte_pgprot(pte);
for (i = 0; i < ncontig; i++, ptep++, addr += pgsize, pfn += dpfn)
- set_pte_at(mm, addr, ptep, pfn_pte(pfn, hugeprot));
+ __set_ptes(mm, addr, ptep, pfn_pte(pfn, hugeprot), 1);
return 1;
}
@@ -492,8 +485,8 @@ void huge_ptep_set_wrprotect(struct mm_struct *mm,
size_t pgsize;
pte_t pte;
- if (!pte_cont(READ_ONCE(*ptep))) {
- ptep_set_wrprotect(mm, addr, ptep);
+ if (!pte_cont(__ptep_get(ptep))) {
+ __ptep_set_wrprotect(mm, addr, ptep);
return;
}
@@ -507,7 +500,7 @@ void huge_ptep_set_wrprotect(struct mm_struct *mm,
pfn = pte_pfn(pte);
for (i = 0; i < ncontig; i++, ptep++, addr += pgsize, pfn += dpfn)
- set_pte_at(mm, addr, ptep, pfn_pte(pfn, hugeprot));
+ __set_ptes(mm, addr, ptep, pfn_pte(pfn, hugeprot), 1);
}
pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
@@ -517,7 +510,7 @@ pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
size_t pgsize;
int ncontig;
- if (!pte_cont(READ_ONCE(*ptep)))
+ if (!pte_cont(__ptep_get(ptep)))
return ptep_clear_flush(vma, addr, ptep);
ncontig = find_num_contig(mm, addr, ptep, &pgsize);
@@ -550,7 +543,7 @@ pte_t huge_ptep_modify_prot_start(struct vm_area_struct *vma, unsigned long addr
* when the permission changes from executable to non-executable
* in cases where cpu is affected with errata #2645198.
*/
- if (pte_user_exec(READ_ONCE(*ptep)))
+ if (pte_user_exec(__ptep_get(ptep)))
return huge_ptep_clear_flush(vma, addr, ptep);
}
return huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 0f427b50fdc3..03efd86dce0a 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -100,7 +100,7 @@ static void __init arch_reserve_crashkernel(void)
bool high = false;
int ret;
- if (!IS_ENABLED(CONFIG_KEXEC_CORE))
+ if (!IS_ENABLED(CONFIG_CRASH_RESERVE))
return;
ret = parse_crashkernel(cmdline, memblock_phys_mem_size(),
diff --git a/arch/arm64/mm/kasan_init.c b/arch/arm64/mm/kasan_init.c
index fbddbf9faf19..b65a29440a0c 100644
--- a/arch/arm64/mm/kasan_init.c
+++ b/arch/arm64/mm/kasan_init.c
@@ -125,8 +125,8 @@ static void __init kasan_pte_populate(pmd_t *pmdp, unsigned long addr,
if (!early)
memset(__va(page_phys), KASAN_SHADOW_INIT, PAGE_SIZE);
next = addr + PAGE_SIZE;
- set_pte(ptep, pfn_pte(__phys_to_pfn(page_phys), PAGE_KERNEL));
- } while (ptep++, addr = next, addr != end && pte_none(READ_ONCE(*ptep)));
+ __set_pte(ptep, pfn_pte(__phys_to_pfn(page_phys), PAGE_KERNEL));
+ } while (ptep++, addr = next, addr != end && pte_none(__ptep_get(ptep)));
}
static void __init kasan_pmd_populate(pud_t *pudp, unsigned long addr,
@@ -366,7 +366,7 @@ static void __init kasan_init_shadow(void)
* so we should make sure that it maps the zero page read-only.
*/
for (i = 0; i < PTRS_PER_PTE; i++)
- set_pte(&kasan_early_shadow_pte[i],
+ __set_pte(&kasan_early_shadow_pte[i],
pfn_pte(sym_to_pfn(kasan_early_shadow_page),
PAGE_KERNEL_RO));
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index bf5b1c426ad0..495b732d5af3 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -179,16 +179,16 @@ static void init_pte(pmd_t *pmdp, unsigned long addr, unsigned long end,
ptep = pte_set_fixmap_offset(pmdp, addr);
do {
- pte_t old_pte = READ_ONCE(*ptep);
+ pte_t old_pte = __ptep_get(ptep);
- set_pte(ptep, pfn_pte(__phys_to_pfn(phys), prot));
+ __set_pte(ptep, pfn_pte(__phys_to_pfn(phys), prot));
/*
* After the PTE entry has been populated once, we
* only allow updates to the permission attributes.
*/
BUG_ON(!pgattr_change_is_safe(pte_val(old_pte),
- READ_ONCE(pte_val(*ptep))));
+ pte_val(__ptep_get(ptep))));
phys += PAGE_SIZE;
} while (ptep++, addr += PAGE_SIZE, addr != end);
@@ -682,8 +682,6 @@ void mark_rodata_ro(void)
WRITE_ONCE(rodata_is_rw, false);
update_mapping_prot(__pa_symbol(__start_rodata), (unsigned long)__start_rodata,
section_size, PAGE_KERNEL_RO);
-
- debug_checkwx();
}
static void __init declare_vma(struct vm_struct *vma,
@@ -846,12 +844,12 @@ static void unmap_hotplug_pte_range(pmd_t *pmdp, unsigned long addr,
do {
ptep = pte_offset_kernel(pmdp, addr);
- pte = READ_ONCE(*ptep);
+ pte = __ptep_get(ptep);
if (pte_none(pte))
continue;
WARN_ON(!pte_present(pte));
- pte_clear(&init_mm, addr, ptep);
+ __pte_clear(&init_mm, addr, ptep);
flush_tlb_kernel_range(addr, addr + PAGE_SIZE);
if (free_mapped)
free_hotplug_page_range(pte_page(pte),
@@ -979,7 +977,7 @@ static void free_empty_pte_table(pmd_t *pmdp, unsigned long addr,
do {
ptep = pte_offset_kernel(pmdp, addr);
- pte = READ_ONCE(*ptep);
+ pte = __ptep_get(ptep);
/*
* This is just a sanity check here which verifies that
@@ -998,7 +996,7 @@ static void free_empty_pte_table(pmd_t *pmdp, unsigned long addr,
*/
ptep = pte_offset_kernel(pmdp, 0UL);
for (i = 0; i < PTRS_PER_PTE; i++) {
- if (!pte_none(READ_ONCE(ptep[i])))
+ if (!pte_none(__ptep_get(&ptep[i])))
return;
}
@@ -1494,7 +1492,7 @@ pte_t ptep_modify_prot_start(struct vm_area_struct *vma, unsigned long addr, pte
* when the permission changes from executable to non-executable
* in cases where cpu is affected with errata #2645198.
*/
- if (pte_user_exec(READ_ONCE(*ptep)))
+ if (pte_user_exec(ptep_get(ptep)))
return ptep_clear_flush(vma, addr, ptep);
}
return ptep_get_and_clear(vma->vm_mm, addr, ptep);
diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c
index 924843f1f661..0c4e3ecf989d 100644
--- a/arch/arm64/mm/pageattr.c
+++ b/arch/arm64/mm/pageattr.c
@@ -36,12 +36,12 @@ bool can_set_direct_map(void)
static int change_page_range(pte_t *ptep, unsigned long addr, void *data)
{
struct page_change_data *cdata = data;
- pte_t pte = READ_ONCE(*ptep);
+ pte_t pte = __ptep_get(ptep);
pte = clear_pte_bit(pte, cdata->clear_mask);
pte = set_pte_bit(pte, cdata->set_mask);
- set_pte(ptep, pte);
+ __set_pte(ptep, pte);
return 0;
}
@@ -245,5 +245,5 @@ bool kernel_page_present(struct page *page)
return true;
ptep = pte_offset_kernel(pmdp, addr);
- return pte_valid(READ_ONCE(*ptep));
+ return pte_valid(__ptep_get(ptep));
}
diff --git a/arch/arm64/mm/ptdump.c b/arch/arm64/mm/ptdump.c
index 5b87f8d623f7..6986827e0d64 100644
--- a/arch/arm64/mm/ptdump.c
+++ b/arch/arm64/mm/ptdump.c
@@ -322,7 +322,7 @@ static struct ptdump_info kernel_ptdump_info __ro_after_init = {
.mm = &init_mm,
};
-void ptdump_check_wx(void)
+bool ptdump_check_wx(void)
{
struct pg_state st = {
.seq = NULL,
@@ -343,11 +343,16 @@ void ptdump_check_wx(void)
ptdump_walk_pgd(&st.ptdump, &init_mm, NULL);
- if (st.wx_pages || st.uxn_pages)
+ if (st.wx_pages || st.uxn_pages) {
pr_warn("Checked W+X mappings: FAILED, %lu W+X pages found, %lu non-UXN pages found\n",
st.wx_pages, st.uxn_pages);
- else
+
+ return false;
+ } else {
pr_info("Checked W+X mappings: passed, no W+X pages found\n");
+
+ return true;
+ }
}
static int __init ptdump_init(void)
diff --git a/arch/arm64/mm/trans_pgd.c b/arch/arm64/mm/trans_pgd.c
index 7b14df3c6477..5139a28130c0 100644
--- a/arch/arm64/mm/trans_pgd.c
+++ b/arch/arm64/mm/trans_pgd.c
@@ -33,7 +33,7 @@ static void *trans_alloc(struct trans_pgd_info *info)
static void _copy_pte(pte_t *dst_ptep, pte_t *src_ptep, unsigned long addr)
{
- pte_t pte = READ_ONCE(*src_ptep);
+ pte_t pte = __ptep_get(src_ptep);
if (pte_valid(pte)) {
/*
@@ -41,7 +41,7 @@ static void _copy_pte(pte_t *dst_ptep, pte_t *src_ptep, unsigned long addr)
* read only (code, rodata). Clear the RDONLY bit from
* the temporary mappings we use during restore.
*/
- set_pte(dst_ptep, pte_mkwrite_novma(pte));
+ __set_pte(dst_ptep, pte_mkwrite_novma(pte));
} else if ((debug_pagealloc_enabled() ||
is_kfence_address((void *)addr)) && !pte_none(pte)) {
/*
@@ -55,7 +55,7 @@ static void _copy_pte(pte_t *dst_ptep, pte_t *src_ptep, unsigned long addr)
*/
BUG_ON(!pfn_valid(pte_pfn(pte)));
- set_pte(dst_ptep, pte_mkpresent(pte_mkwrite_novma(pte)));
+ __set_pte(dst_ptep, pte_mkpresent(pte_mkwrite_novma(pte)));
}
}
diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig
index 9c2723ab1c94..d3ac36751ad1 100644
--- a/arch/csky/Kconfig
+++ b/arch/csky/Kconfig
@@ -2,6 +2,7 @@
config CSKY
def_bool y
select ARCH_32BIT_OFF_T
+ select ARCH_HAS_CPU_CACHE_ALIASING
select ARCH_HAS_DMA_PREP_COHERENT
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_SYNC_DMA_FOR_CPU
diff --git a/arch/csky/include/asm/cachetype.h b/arch/csky/include/asm/cachetype.h
new file mode 100644
index 000000000000..98cbe3af662f
--- /dev/null
+++ b/arch/csky/include/asm/cachetype.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_CSKY_CACHETYPE_H
+#define __ASM_CSKY_CACHETYPE_H
+
+#include <linux/types.h>
+
+#define cpu_dcache_is_aliasing() true
+
+#endif
diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c
index fd915ad69c09..2b72eb326b44 100644
--- a/arch/loongarch/kernel/setup.c
+++ b/arch/loongarch/kernel/setup.c
@@ -260,7 +260,7 @@ static void __init arch_reserve_crashkernel(void)
char *cmdline = boot_command_line;
bool high = false;
- if (!IS_ENABLED(CONFIG_KEXEC_CORE))
+ if (!IS_ENABLED(CONFIG_CRASH_RESERVE))
return;
ret = parse_crashkernel(cmdline, memblock_phys_mem_size(),
diff --git a/arch/loongarch/kvm/mmu.c b/arch/loongarch/kvm/mmu.c
index 50a6acd7ffe4..a556cff35740 100644
--- a/arch/loongarch/kvm/mmu.c
+++ b/arch/loongarch/kvm/mmu.c
@@ -723,7 +723,7 @@ static int host_pfn_mapping_level(struct kvm *kvm, gfn_t gfn,
/*
* Read each entry once. As above, a non-leaf entry can be promoted to
* a huge page _during_ this walk. Re-reading the entry could send the
- * walk into the weeks, e.g. p*d_large() returns false (sees the old
+ * walk into the weeks, e.g. p*d_leaf() returns false (sees the old
* value) and then p*d_offset() walks into the target huge page instead
* of the old page table (sees the new value).
*/
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 7b709453d5e7..6ffa29585194 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -3,6 +3,7 @@ config M68K
bool
default y
select ARCH_32BIT_OFF_T
+ select ARCH_HAS_CPU_CACHE_ALIASING
select ARCH_HAS_BINFMT_FLAT
select ARCH_HAS_CPU_FINALIZE_INIT if MMU
select ARCH_HAS_CURRENT_STACK_POINTER
diff --git a/arch/m68k/include/asm/cachetype.h b/arch/m68k/include/asm/cachetype.h
new file mode 100644
index 000000000000..7fad5d9ab8fe
--- /dev/null
+++ b/arch/m68k/include/asm/cachetype.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_M68K_CACHETYPE_H
+#define __ASM_M68K_CACHETYPE_H
+
+#include <linux/types.h>
+
+#define cpu_dcache_is_aliasing() true
+
+#endif
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 6f251746777d..e41419af171b 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -4,6 +4,7 @@ config MIPS
default y
select ARCH_32BIT_OFF_T if !64BIT
select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
+ select ARCH_HAS_CPU_CACHE_ALIASING
select ARCH_HAS_CPU_FINALIZE_INIT
select ARCH_HAS_CURRENT_STACK_POINTER if !CC_IS_CLANG || CLANG_VERSION >= 140000
select ARCH_HAS_DEBUG_VIRTUAL if !64BIT
diff --git a/arch/mips/include/asm/cachetype.h b/arch/mips/include/asm/cachetype.h
new file mode 100644
index 000000000000..9f4ba2fe1155
--- /dev/null
+++ b/arch/mips/include/asm/cachetype.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_MIPS_CACHETYPE_H
+#define __ASM_MIPS_CACHETYPE_H
+
+#include <asm/cpu-features.h>
+
+#define cpu_dcache_is_aliasing() cpu_has_dc_aliases
+
+#endif
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 9c30de151597..12a1a4ffb602 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -442,8 +442,6 @@ static void __init mips_reserve_vmcore(void)
#endif
}
-#ifdef CONFIG_KEXEC
-
/* 64M alignment for crash kernel regions */
#define CRASH_ALIGN SZ_64M
#define CRASH_ADDR_MAX SZ_512M
@@ -454,6 +452,9 @@ static void __init mips_parse_crashkernel(void)
unsigned long long crash_size, crash_base;
int ret;
+ if (!IS_ENABLED(CONFIG_CRASH_RESERVE))
+ return;
+
total_mem = memblock_phys_mem_size();
ret = parse_crashkernel(boot_command_line, total_mem,
&crash_size, &crash_base,
@@ -489,6 +490,9 @@ static void __init request_crashkernel(struct resource *res)
{
int ret;
+ if (!IS_ENABLED(CONFIG_CRASH_RESERVE))
+ return;
+
if (crashk_res.start == crashk_res.end)
return;
@@ -498,15 +502,6 @@ static void __init request_crashkernel(struct resource *res)
(unsigned long)(resource_size(&crashk_res) >> 20),
(unsigned long)(crashk_res.start >> 20));
}
-#else /* !defined(CONFIG_KEXEC) */
-static void __init mips_parse_crashkernel(void)
-{
-}
-
-static void __init request_crashkernel(struct resource *res)
-{
-}
-#endif /* !defined(CONFIG_KEXEC) */
static void __init check_kernel_sections_mem(void)
{
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index 79d3039b29f1..9c0e6eaeb005 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -2,6 +2,7 @@
config NIOS2
def_bool y
select ARCH_32BIT_OFF_T
+ select ARCH_HAS_CPU_CACHE_ALIASING
select ARCH_HAS_DMA_PREP_COHERENT
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
diff --git a/arch/nios2/include/asm/cachetype.h b/arch/nios2/include/asm/cachetype.h
new file mode 100644
index 000000000000..eb9c416b8a1c
--- /dev/null
+++ b/arch/nios2/include/asm/cachetype.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_NIOS2_CACHETYPE_H
+#define __ASM_NIOS2_CACHETYPE_H
+
+#include <asm/page.h>
+#include <asm/cache.h>
+
+#define cpu_dcache_is_aliasing() (NIOS2_DCACHE_SIZE > PAGE_SIZE)
+
+#endif
diff --git a/arch/nios2/include/asm/pgtable.h b/arch/nios2/include/asm/pgtable.h
index 5144506dfa69..d052dfcbe8d3 100644
--- a/arch/nios2/include/asm/pgtable.h
+++ b/arch/nios2/include/asm/pgtable.h
@@ -178,6 +178,8 @@ static inline void set_pte(pte_t *ptep, pte_t pteval)
*ptep = pteval;
}
+#define PFN_PTE_SHIFT 0
+
static inline void set_ptes(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte, unsigned int nr)
{
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 052d27fbea15..ee29c4c8d7c1 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -8,6 +8,7 @@ config PARISC
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_SYSCALL_TRACEPOINTS
select ARCH_WANT_FRAME_POINTERS
+ select ARCH_HAS_CPU_CACHE_ALIASING
select ARCH_HAS_DMA_ALLOC if PA11
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_STRICT_KERNEL_RWX
diff --git a/arch/parisc/include/asm/cachetype.h b/arch/parisc/include/asm/cachetype.h
new file mode 100644
index 000000000000..e0868a1d3c47
--- /dev/null
+++ b/arch/parisc/include/asm/cachetype.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_PARISC_CACHETYPE_H
+#define __ASM_PARISC_CACHETYPE_H
+
+#include <linux/types.h>
+
+#define cpu_dcache_is_aliasing() true
+
+#endif
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index a91cb070ca4a..c69498f4bd8c 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -608,6 +608,11 @@ config PPC64_SUPPORTS_MEMORY_FAILURE
config ARCH_SUPPORTS_KEXEC
def_bool PPC_BOOK3S || PPC_E500 || (44x && !SMP)
+config ARCH_SELECTS_KEXEC
+ def_bool y
+ depends on KEXEC
+ select CRASH_DUMP
+
config ARCH_SUPPORTS_KEXEC_FILE
def_bool PPC64
@@ -618,6 +623,7 @@ config ARCH_SELECTS_KEXEC_FILE
def_bool y
depends on KEXEC_FILE
select KEXEC_ELF
+ select CRASH_DUMP
select HAVE_IMA_KEXEC if IMA
config PPC64_BIG_ENDIAN_ELF_ABI_V2
@@ -690,7 +696,6 @@ config ARCH_SELECTS_CRASH_DUMP
config FA_DUMP
bool "Firmware-assisted dump"
depends on PPC64 && (PPC_RTAS || PPC_POWERNV)
- select CRASH_CORE
select CRASH_DUMP
help
A robust mechanism to get reliable kernel crash dump with
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 927d585652bc..df66dce8306f 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -1158,20 +1158,6 @@ pud_hugepage_update(struct mm_struct *mm, unsigned long addr, pud_t *pudp,
}
/*
- * returns true for pmd migration entries, THP, devmap, hugetlb
- * But compile time dependent on THP config
- */
-static inline int pmd_large(pmd_t pmd)
-{
- return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
-}
-
-static inline int pud_large(pud_t pud)
-{
- return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
-}
-
-/*
* For radix we should always find H_PAGE_HASHPTE zero. Hence
* the below will work for radix too
*/
@@ -1451,18 +1437,16 @@ static inline bool is_pte_rw_upgrade(unsigned long old_val, unsigned long new_va
}
/*
- * Like pmd_huge() and pmd_large(), but works regardless of config options
+ * Like pmd_huge(), but works regardless of config options
*/
-#define pmd_is_leaf pmd_is_leaf
-#define pmd_leaf pmd_is_leaf
-static inline bool pmd_is_leaf(pmd_t pmd)
+#define pmd_leaf pmd_leaf
+static inline bool pmd_leaf(pmd_t pmd)
{
return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
}
-#define pud_is_leaf pud_is_leaf
-#define pud_leaf pud_is_leaf
-static inline bool pud_is_leaf(pud_t pud)
+#define pud_leaf pud_leaf
+static inline bool pud_leaf(pud_t pud)
{
return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
}
diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
index 9224f23065ff..239709a2f68e 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -41,6 +41,8 @@ struct mm_struct;
#ifndef __ASSEMBLY__
+#define PFN_PTE_SHIFT PTE_RPN_SHIFT
+
void set_ptes(struct mm_struct *mm, unsigned long addr, pte_t *ptep,
pte_t pte, unsigned int nr);
#define set_ptes set_ptes
@@ -99,10 +101,6 @@ void poking_init(void);
extern unsigned long ioremap_bot;
extern const pgprot_t protection_map[16];
-#ifndef CONFIG_TRANSPARENT_HUGEPAGE
-#define pmd_large(pmd) 0
-#endif
-
/* can we use this in kvm */
unsigned long vmalloc_to_phys(void *vmalloc_addr);
@@ -180,30 +178,6 @@ static inline void pte_frag_set(mm_context_t *ctx, void *p)
}
#endif
-#ifndef pmd_is_leaf
-#define pmd_is_leaf pmd_is_leaf
-static inline bool pmd_is_leaf(pmd_t pmd)
-{
- return false;
-}
-#endif
-
-#ifndef pud_is_leaf
-#define pud_is_leaf pud_is_leaf
-static inline bool pud_is_leaf(pud_t pud)
-{
- return false;
-}
-#endif
-
-#ifndef p4d_is_leaf
-#define p4d_is_leaf p4d_is_leaf
-static inline bool p4d_is_leaf(p4d_t p4d)
-{
- return false;
-}
-#endif
-
#define pmd_pgtable pmd_pgtable
static inline pgtable_t pmd_pgtable(pmd_t pmd)
{
diff --git a/arch/powerpc/include/asm/tlb.h b/arch/powerpc/include/asm/tlb.h
index b3de6102a907..1ca7d4c4b90d 100644
--- a/arch/powerpc/include/asm/tlb.h
+++ b/arch/powerpc/include/asm/tlb.h
@@ -19,6 +19,8 @@
#include <linux/pagemap.h>
+static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
+ unsigned long address);
#define __tlb_remove_tlb_entry __tlb_remove_tlb_entry
#define tlb_flush tlb_flush
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 9b142b9d5187..733f210ffda1 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -109,7 +109,7 @@ int ppc_do_canonicalize_irqs;
EXPORT_SYMBOL(ppc_do_canonicalize_irqs);
#endif
-#ifdef CONFIG_CRASH_CORE
+#ifdef CONFIG_VMCORE_INFO
/* This keeps a track of which one is the crashing cpu. */
int crashing_cpu = -1;
#endif
diff --git a/arch/powerpc/kexec/Makefile b/arch/powerpc/kexec/Makefile
index 0c2abe7f9908..91e96f5168b7 100644
--- a/arch/powerpc/kexec/Makefile
+++ b/arch/powerpc/kexec/Makefile
@@ -8,6 +8,7 @@ obj-y += core.o crash.o core_$(BITS).o
obj-$(CONFIG_PPC32) += relocate_32.o
obj-$(CONFIG_KEXEC_FILE) += file_load.o ranges.o file_load_$(BITS).o elf_$(BITS).o
+obj-$(CONFIG_VMCORE_INFO) += vmcore_info.o
# Disable GCOV, KCOV & sanitizers in odd or sensitive code
GCOV_PROFILE_core_$(BITS).o := n
diff --git a/arch/powerpc/kexec/core.c b/arch/powerpc/kexec/core.c
index 27fa9098a5b7..3ff4411ed496 100644
--- a/arch/powerpc/kexec/core.c
+++ b/arch/powerpc/kexec/core.c
@@ -53,34 +53,6 @@ void machine_kexec_cleanup(struct kimage *image)
{
}
-void arch_crash_save_vmcoreinfo(void)
-{
-
-#ifdef CONFIG_NUMA
- VMCOREINFO_SYMBOL(node_data);
- VMCOREINFO_LENGTH(node_data, MAX_NUMNODES);
-#endif
-#ifndef CONFIG_NUMA
- VMCOREINFO_SYMBOL(contig_page_data);
-#endif
-#if defined(CONFIG_PPC64) && defined(CONFIG_SPARSEMEM_VMEMMAP)
- VMCOREINFO_SYMBOL(vmemmap_list);
- VMCOREINFO_SYMBOL(mmu_vmemmap_psize);
- VMCOREINFO_SYMBOL(mmu_psize_defs);
- VMCOREINFO_STRUCT_SIZE(vmemmap_backing);
- VMCOREINFO_OFFSET(vmemmap_backing, list);
- VMCOREINFO_OFFSET(vmemmap_backing, phys);
- VMCOREINFO_OFFSET(vmemmap_backing, virt_addr);
- VMCOREINFO_STRUCT_SIZE(mmu_psize_def);
- VMCOREINFO_OFFSET(mmu_psize_def, shift);
-#endif
- VMCOREINFO_SYMBOL(cur_cpu_spec);
- VMCOREINFO_OFFSET(cpu_spec, cpu_features);
- VMCOREINFO_OFFSET(cpu_spec, mmu_features);
- vmcoreinfo_append_str("NUMBER(RADIX_MMU)=%d\n", early_radix_enabled());
- vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset());
-}
-
/*
* Do not allocate memory (or fail in any way) in machine_kexec().
* We are past the point of no return, committed to rebooting now.
diff --git a/arch/powerpc/kexec/vmcore_info.c b/arch/powerpc/kexec/vmcore_info.c
new file mode 100644
index 000000000000..2b65d2adca5e
--- /dev/null
+++ b/arch/powerpc/kexec/vmcore_info.c
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/vmcore_info.h>
+#include <asm/pgalloc.h>
+
+void arch_crash_save_vmcoreinfo(void)
+{
+
+#ifdef CONFIG_NUMA
+ VMCOREINFO_SYMBOL(node_data);
+ VMCOREINFO_LENGTH(node_data, MAX_NUMNODES);
+#endif
+#ifndef CONFIG_NUMA
+ VMCOREINFO_SYMBOL(contig_page_data);
+#endif
+#if defined(CONFIG_PPC64) && defined(CONFIG_SPARSEMEM_VMEMMAP)
+ VMCOREINFO_SYMBOL(vmemmap_list);
+ VMCOREINFO_SYMBOL(mmu_vmemmap_psize);
+ VMCOREINFO_SYMBOL(mmu_psize_defs);
+ VMCOREINFO_STRUCT_SIZE(vmemmap_backing);
+ VMCOREINFO_OFFSET(vmemmap_backing, list);
+ VMCOREINFO_OFFSET(vmemmap_backing, phys);
+ VMCOREINFO_OFFSET(vmemmap_backing, virt_addr);
+ VMCOREINFO_STRUCT_SIZE(mmu_psize_def);
+ VMCOREINFO_OFFSET(mmu_psize_def, shift);
+#endif
+ VMCOREINFO_SYMBOL(cur_cpu_spec);
+ VMCOREINFO_OFFSET(cpu_spec, cpu_features);
+ VMCOREINFO_OFFSET(cpu_spec, mmu_features);
+ vmcoreinfo_append_str("NUMBER(RADIX_MMU)=%d\n", early_radix_enabled());
+ vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset());
+}
diff --git a/arch/powerpc/kvm/book3s_64_mmu_radix.c b/arch/powerpc/kvm/book3s_64_mmu_radix.c
index 4a1abb9f7c05..408d98f8a514 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_radix.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_radix.c
@@ -503,7 +503,7 @@ static void kvmppc_unmap_free_pmd(struct kvm *kvm, pmd_t *pmd, bool full,
for (im = 0; im < PTRS_PER_PMD; ++im, ++p) {
if (!pmd_present(*p))
continue;
- if (pmd_is_leaf(*p)) {
+ if (pmd_leaf(*p)) {
if (full) {
pmd_clear(p);
} else {
@@ -532,7 +532,7 @@ static void kvmppc_unmap_free_pud(struct kvm *kvm, pud_t *pud,
for (iu = 0; iu < PTRS_PER_PUD; ++iu, ++p) {
if (!pud_present(*p))
continue;
- if (pud_is_leaf(*p)) {
+ if (pud_leaf(*p)) {
pud_clear(p);
} else {
pmd_t *pmd;
@@ -635,12 +635,12 @@ int kvmppc_create_pte(struct kvm *kvm, pgd_t *pgtable, pte_t pte,
new_pud = pud_alloc_one(kvm->mm, gpa);
pmd = NULL;
- if (pud && pud_present(*pud) && !pud_is_leaf(*pud))
+ if (pud && pud_present(*pud) && !pud_leaf(*pud))
pmd = pmd_offset(pud, gpa);
else if (level <= 1)
new_pmd = kvmppc_pmd_alloc();
- if (level == 0 && !(pmd && pmd_present(*pmd) && !pmd_is_leaf(*pmd)))
+ if (level == 0 && !(pmd && pmd_present(*pmd) && !pmd_leaf(*pmd)))
new_ptep = kvmppc_pte_alloc();
/* Check if we might have been invalidated; let the guest retry if so */
@@ -658,7 +658,7 @@ int kvmppc_create_pte(struct kvm *kvm, pgd_t *pgtable, pte_t pte,
new_pud = NULL;
}
pud = pud_offset(p4d, gpa);
- if (pud_is_leaf(*pud)) {
+ if (pud_leaf(*pud)) {
unsigned long hgpa = gpa & PUD_MASK;
/* Check if we raced and someone else has set the same thing */
@@ -709,7 +709,7 @@ int kvmppc_create_pte(struct kvm *kvm, pgd_t *pgtable, pte_t pte,
new_pmd = NULL;
}
pmd = pmd_offset(pud, gpa);
- if (pmd_is_leaf(*pmd)) {
+ if (pmd_leaf(*pmd)) {
unsigned long lgpa = gpa & PMD_MASK;
/* Check if we raced and someone else has set the same thing */
diff --git a/arch/powerpc/mm/book3s64/pgtable.c b/arch/powerpc/mm/book3s64/pgtable.c
index 3438ab72c346..83823db3488b 100644
--- a/arch/powerpc/mm/book3s64/pgtable.c
+++ b/arch/powerpc/mm/book3s64/pgtable.c
@@ -113,7 +113,7 @@ void set_pmd_at(struct mm_struct *mm, unsigned long addr,
WARN_ON(pte_hw_valid(pmd_pte(*pmdp)) && !pte_protnone(pmd_pte(*pmdp)));
assert_spin_locked(pmd_lockptr(mm, pmdp));
- WARN_ON(!(pmd_large(pmd)));
+ WARN_ON(!(pmd_leaf(pmd)));
#endif
trace_hugepage_set_pmd(addr, pmd_val(pmd));
return set_pte_at(mm, addr, pmdp_ptep(pmdp), pmd_pte(pmd));
@@ -130,7 +130,7 @@ void set_pud_at(struct mm_struct *mm, unsigned long addr,
WARN_ON(pte_hw_valid(pud_pte(*pudp)));
assert_spin_locked(pud_lockptr(mm, pudp));
- WARN_ON(!(pud_large(pud)));
+ WARN_ON(!(pud_leaf(pud)));
#endif
trace_hugepage_set_pud(addr, pud_val(pud));
return set_pte_at(mm, addr, pudp_ptep(pudp), pud_pte(pud));
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c
index c6a4ac766b2b..5cc4008329be 100644
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c
+++ b/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -204,14 +204,14 @@ static void radix__change_memory_range(unsigned long start, unsigned long end,
pudp = pud_alloc(&init_mm, p4dp, idx);
if (!pudp)
continue;
- if (pud_is_leaf(*pudp)) {
+ if (pud_leaf(*pudp)) {
ptep = (pte_t *)pudp;
goto update_the_pte;
}
pmdp = pmd_alloc(&init_mm, pudp, idx);
if (!pmdp)
continue;
- if (pmd_is_leaf(*pmdp)) {
+ if (pmd_leaf(*pmdp)) {
ptep = pmdp_ptep(pmdp);
goto update_the_pte;
}
@@ -767,7 +767,7 @@ static void __meminit remove_pmd_table(pmd_t *pmd_start, unsigned long addr,
if (!pmd_present(*pmd))
continue;
- if (pmd_is_leaf(*pmd)) {
+ if (pmd_leaf(*pmd)) {
if (IS_ALIGNED(addr, PMD_SIZE) &&
IS_ALIGNED(next, PMD_SIZE)) {
if (!direct)
@@ -807,7 +807,7 @@ static void __meminit remove_pud_table(pud_t *pud_start, unsigned long addr,
if (!pud_present(*pud))
continue;
- if (pud_is_leaf(*pud)) {
+ if (pud_leaf(*pud)) {
if (!IS_ALIGNED(addr, PUD_SIZE) ||
!IS_ALIGNED(next, PUD_SIZE)) {
WARN_ONCE(1, "%s: unaligned range\n", __func__);
@@ -845,7 +845,7 @@ remove_pagetable(unsigned long start, unsigned long end, bool direct,
if (!p4d_present(*p4d))
continue;
- if (p4d_is_leaf(*p4d)) {
+ if (p4d_leaf(*p4d)) {
if (!IS_ALIGNED(addr, P4D_SIZE) ||
!IS_ALIGNED(next, P4D_SIZE)) {
WARN_ONCE(1, "%s: unaligned range\n", __func__);
@@ -924,7 +924,7 @@ bool vmemmap_can_optimize(struct vmem_altmap *altmap, struct dev_pagemap *pgmap)
int __meminit vmemmap_check_pmd(pmd_t *pmdp, int node,
unsigned long addr, unsigned long next)
{
- int large = pmd_large(*pmdp);
+ int large = pmd_leaf(*pmdp);
if (large)
vmemmap_verify(pmdp_ptep(pmdp), node, addr, next);
@@ -1554,7 +1554,7 @@ int pud_set_huge(pud_t *pud, phys_addr_t addr, pgprot_t prot)
int pud_clear_huge(pud_t *pud)
{
- if (pud_is_leaf(*pud)) {
+ if (pud_leaf(*pud)) {
pud_clear(pud);
return 1;
}
@@ -1601,7 +1601,7 @@ int pmd_set_huge(pmd_t *pmd, phys_addr_t addr, pgprot_t prot)
int pmd_clear_huge(pmd_t *pmd)
{
- if (pmd_is_leaf(*pmd)) {
+ if (pmd_leaf(*pmd)) {
pmd_clear(pmd);
return 1;
}
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 0a540b37aab6..594a4b7b2ca2 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -226,7 +226,7 @@ static int __init pseries_alloc_bootmem_huge_page(struct hstate *hstate)
return 0;
m = phys_to_virt(gpage_freearray[--nr_gpages]);
gpage_freearray[nr_gpages] = 0;
- list_add(&m->list, &huge_boot_pages);
+ list_add(&m->list, &huge_boot_pages[0]);
m->hstate = hstate;
return 1;
}
@@ -614,8 +614,6 @@ void __init gigantic_hugetlb_cma_reserve(void)
*/
order = mmu_psize_to_shift(MMU_PAGE_16G) - PAGE_SHIFT;
- if (order) {
- VM_WARN_ON(order <= MAX_PAGE_ORDER);
+ if (order)
hugetlb_cma_reserve(order);
- }
}
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index 72341b9fb552..90dcc2844056 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -171,12 +171,6 @@ static inline void mmu_mark_rodata_ro(void) { }
void __init mmu_mapin_immr(void);
#endif
-#ifdef CONFIG_DEBUG_WX
-void ptdump_check_wx(void);
-#else
-static inline void ptdump_check_wx(void) { }
-#endif
-
static inline bool debug_pagealloc_enabled_or_kfence(void)
{
return IS_ENABLED(CONFIG_KFENCE) || debug_pagealloc_enabled();
diff --git a/arch/powerpc/mm/nohash/kaslr_booke.c b/arch/powerpc/mm/nohash/kaslr_booke.c
index b4f2786a7d2b..cdff129abb14 100644
--- a/arch/powerpc/mm/nohash/kaslr_booke.c
+++ b/arch/powerpc/mm/nohash/kaslr_booke.c
@@ -13,7 +13,7 @@
#include <linux/delay.h>
#include <linux/memblock.h>
#include <linux/libfdt.h>
-#include <linux/crash_core.h>
+#include <linux/crash_reserve.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <asm/cacheflush.h>
@@ -173,7 +173,7 @@ static __init bool overlaps_region(const void *fdt, u32 start,
static void __init get_crash_kernel(void *fdt, unsigned long size)
{
-#ifdef CONFIG_CRASH_CORE
+#ifdef CONFIG_CRASH_RESERVE
unsigned long long crash_size, crash_base;
int ret;
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
index a04ae4449a02..9e7ba9c3851f 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c
@@ -220,10 +220,7 @@ void set_ptes(struct mm_struct *mm, unsigned long addr, pte_t *ptep,
break;
ptep++;
addr += PAGE_SIZE;
- /*
- * increment the pfn.
- */
- pte = pfn_pte(pte_pfn(pte) + 1, pte_pgprot((pte)));
+ pte = pte_next_pfn(pte);
}
}
@@ -413,7 +410,7 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
if (p4d_none(p4d))
return NULL;
- if (p4d_is_leaf(p4d)) {
+ if (p4d_leaf(p4d)) {
ret_pte = (pte_t *)p4dp;
goto out;
}
@@ -435,7 +432,7 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
if (pud_none(pud))
return NULL;
- if (pud_is_leaf(pud)) {
+ if (pud_leaf(pud)) {
ret_pte = (pte_t *)pudp;
goto out;
}
@@ -474,7 +471,7 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
goto out;
}
- if (pmd_is_leaf(pmd)) {
+ if (pmd_leaf(pmd)) {
ret_pte = (pte_t *)pmdp;
goto out;
}
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index 5c02fd08d61e..12498017da8e 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -153,7 +153,6 @@ void mark_rodata_ro(void)
if (v_block_mapped((unsigned long)_stext + 1)) {
mmu_mark_rodata_ro();
- ptdump_check_wx();
return;
}
@@ -166,9 +165,6 @@ void mark_rodata_ro(void)
PFN_DOWN((unsigned long)_stext);
set_memory_ro((unsigned long)_stext, numpages);
-
- // mark_initmem_nx() should have already run by now
- ptdump_check_wx();
}
#endif
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index 5ac1fd30341b..9b99113cb51a 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c
@@ -100,7 +100,7 @@ EXPORT_SYMBOL(__pte_frag_size_shift);
/* 4 level page table */
struct page *p4d_page(p4d_t p4d)
{
- if (p4d_is_leaf(p4d)) {
+ if (p4d_leaf(p4d)) {
if (!IS_ENABLED(CONFIG_HAVE_ARCH_HUGE_VMAP))
VM_WARN_ON(!p4d_huge(p4d));
return pte_page(p4d_pte(p4d));
@@ -111,7 +111,7 @@ struct page *p4d_page(p4d_t p4d)
struct page *pud_page(pud_t pud)
{
- if (pud_is_leaf(pud)) {
+ if (pud_leaf(pud)) {
if (!IS_ENABLED(CONFIG_HAVE_ARCH_HUGE_VMAP))
VM_WARN_ON(!pud_huge(pud));
return pte_page(pud_pte(pud));
@@ -125,14 +125,14 @@ struct page *pud_page(pud_t pud)
*/
struct page *pmd_page(pmd_t pmd)
{
- if (pmd_is_leaf(pmd)) {
+ if (pmd_leaf(pmd)) {
/*
* vmalloc_to_page may be called on any vmap address (not only
* vmalloc), and it uses pmd_page() etc., when huge vmap is
* enabled so these checks can't be used.
*/
if (!IS_ENABLED(CONFIG_HAVE_ARCH_HUGE_VMAP))
- VM_WARN_ON(!(pmd_large(pmd) || pmd_huge(pmd)));
+ VM_WARN_ON(!(pmd_leaf(pmd) || pmd_huge(pmd)));
return pte_page(pmd_pte(pmd));
}
return virt_to_page(pmd_page_vaddr(pmd));
@@ -150,9 +150,6 @@ void mark_rodata_ro(void)
radix__mark_rodata_ro();
else
hash__mark_rodata_ro();
-
- // mark_initmem_nx() should have already run by now
- ptdump_check_wx();
}
void mark_initmem_nx(void)
diff --git a/arch/powerpc/mm/ptdump/ptdump.c b/arch/powerpc/mm/ptdump/ptdump.c
index 2313053fe679..9dc239967b77 100644
--- a/arch/powerpc/mm/ptdump/ptdump.c
+++ b/arch/powerpc/mm/ptdump/ptdump.c
@@ -184,13 +184,14 @@ static void note_prot_wx(struct pg_state *st, unsigned long addr)
{
pte_t pte = __pte(st->current_flags);
- if (!IS_ENABLED(CONFIG_DEBUG_WX) || !st->check_wx)
+ if (!st->check_wx)
return;
if (!pte_write(pte) || !pte_exec(pte))
return;
- WARN_ONCE(1, "powerpc/mm: Found insecure W+X mapping at address %p/%pS\n",
+ WARN_ONCE(IS_ENABLED(CONFIG_DEBUG_WX),
+ "powerpc/mm: Found insecure W+X mapping at address %p/%pS\n",
(void *)st->start_address, (void *)st->start_address);
st->wx_pages += (addr - st->start_address) / PAGE_SIZE;
@@ -326,8 +327,7 @@ static void __init build_pgtable_complete_mask(void)
pg_level[i].mask |= pg_level[i].flag[j].mask;
}
-#ifdef CONFIG_DEBUG_WX
-void ptdump_check_wx(void)
+bool ptdump_check_wx(void)
{
struct pg_state st = {
.seq = NULL,
@@ -343,15 +343,22 @@ void ptdump_check_wx(void)
}
};
+ if (IS_ENABLED(CONFIG_PPC_BOOK3S_64) && !mmu_has_feature(MMU_FTR_KERNEL_RO))
+ return true;
+
ptdump_walk_pgd(&st.ptdump, &init_mm, NULL);
- if (st.wx_pages)
+ if (st.wx_pages) {
pr_warn("Checked W+X mappings: FAILED, %lu W+X pages found\n",
st.wx_pages);
- else
+
+ return false;
+ } else {
pr_info("Checked W+X mappings: passed, no W+X pages found\n");
+
+ return true;
+ }
}
-#endif
static int __init ptdump_init(void)
{
diff --git a/arch/powerpc/platforms/powernv/opal-core.c b/arch/powerpc/platforms/powernv/opal-core.c
index bb7657115f1d..c9a9b759cc92 100644
--- a/arch/powerpc/platforms/powernv/opal-core.c
+++ b/arch/powerpc/platforms/powernv/opal-core.c
@@ -16,7 +16,7 @@
#include <linux/kobject.h>
#include <linux/sysfs.h>
#include <linux/slab.h>
-#include <linux/crash_core.h>
+#include <linux/vmcore_info.h>
#include <linux/of.h>
#include <asm/page.h>
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index b3b94cd37713..9669c9925225 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -3342,7 +3342,7 @@ static void show_pte(unsigned long addr)
return;
}
- if (p4d_is_leaf(*p4dp)) {
+ if (p4d_leaf(*p4dp)) {
format_pte(p4dp, p4d_val(*p4dp));
return;
}
@@ -3356,7 +3356,7 @@ static void show_pte(unsigned long addr)
return;
}
- if (pud_is_leaf(*pudp)) {
+ if (pud_leaf(*pudp)) {
format_pte(pudp, pud_val(*pudp));
return;
}
@@ -3370,7 +3370,7 @@ static void show_pte(unsigned long addr)
return;
}
- if (pmd_is_leaf(*pmdp)) {
+ if (pmd_leaf(*pmdp)) {
format_pte(pmdp, pmd_val(*pmdp));
return;
}
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index b50896734a91..1555fa676769 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -767,7 +767,7 @@ config ARCH_SUPPORTS_CRASH_DUMP
def_bool y
config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION
- def_bool CRASH_CORE
+ def_bool CRASH_RESERVE
config COMPAT
bool "Kernel support for 32-bit U-mode"
diff --git a/arch/riscv/include/asm/crash_core.h b/arch/riscv/include/asm/crash_reserve.h
index e1874b23feaf..013962e63587 100644
--- a/arch/riscv/include/asm/crash_core.h
+++ b/arch/riscv/include/asm/crash_reserve.h
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
-#ifndef _RISCV_CRASH_CORE_H
-#define _RISCV_CRASH_CORE_H
+#ifndef _RISCV_CRASH_RESERVE_H
+#define _RISCV_CRASH_RESERVE_H
#define CRASH_ALIGN PMD_SIZE
diff --git a/arch/riscv/include/asm/pgtable-64.h b/arch/riscv/include/asm/pgtable-64.h
index b99bd66107a6..221a5c1ee287 100644
--- a/arch/riscv/include/asm/pgtable-64.h
+++ b/arch/riscv/include/asm/pgtable-64.h
@@ -190,7 +190,7 @@ static inline int pud_bad(pud_t pud)
}
#define pud_leaf pud_leaf
-static inline int pud_leaf(pud_t pud)
+static inline bool pud_leaf(pud_t pud)
{
return pud_present(pud) && (pud_val(pud) & _PAGE_LEAF);
}
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 6066822e7396..20242402fc11 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -241,7 +241,7 @@ static inline int pmd_bad(pmd_t pmd)
}
#define pmd_leaf pmd_leaf
-static inline int pmd_leaf(pmd_t pmd)
+static inline bool pmd_leaf(pmd_t pmd)
{
return pmd_present(pmd) && (pmd_val(pmd) & _PAGE_LEAF);
}
@@ -527,6 +527,8 @@ static inline void __set_pte_at(pte_t *ptep, pte_t pteval)
set_pte(ptep, pteval);
}
+#define PFN_PTE_SHIFT _PAGE_PFN_SHIFT
+
static inline void set_ptes(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pteval, unsigned int nr)
{
diff --git a/arch/riscv/include/asm/ptdump.h b/arch/riscv/include/asm/ptdump.h
deleted file mode 100644
index 3c9ea6dd5af7..000000000000
--- a/arch/riscv/include/asm/ptdump.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 2019 SiFive
- */
-
-#ifndef _ASM_RISCV_PTDUMP_H
-#define _ASM_RISCV_PTDUMP_H
-
-void ptdump_check_wx(void);
-
-#ifdef CONFIG_DEBUG_WX
-static inline void debug_checkwx(void)
-{
- ptdump_check_wx();
-}
-#else
-static inline void debug_checkwx(void)
-{
-}
-#endif
-
-#endif /* _ASM_RISCV_PTDUMP_H */
diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile
index 604d6bf7e476..5e591f831638 100644
--- a/arch/riscv/kernel/Makefile
+++ b/arch/riscv/kernel/Makefile
@@ -94,7 +94,7 @@ obj-$(CONFIG_KGDB) += kgdb.o
obj-$(CONFIG_KEXEC_CORE) += kexec_relocate.o crash_save_regs.o machine_kexec.o
obj-$(CONFIG_KEXEC_FILE) += elf_kexec.o machine_kexec_file.o
obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
-obj-$(CONFIG_CRASH_CORE) += crash_core.o
+obj-$(CONFIG_VMCORE_INFO) += vmcore_info.o
obj-$(CONFIG_JUMP_LABEL) += jump_label.o
diff --git a/arch/riscv/kernel/elf_kexec.c b/arch/riscv/kernel/elf_kexec.c
index 5bd1ec3341fe..54260c16f991 100644
--- a/arch/riscv/kernel/elf_kexec.c
+++ b/arch/riscv/kernel/elf_kexec.c
@@ -117,6 +117,7 @@ static int elf_find_pbase(struct kimage *image, unsigned long kernel_len,
return ret;
}
+#ifdef CONFIG_CRASH_DUMP
static int get_nr_ram_ranges_callback(struct resource *res, void *arg)
{
unsigned int *nr_ranges = arg;
@@ -189,6 +190,7 @@ static char *setup_kdump_cmdline(struct kimage *image, char *cmdline,
cmdline_ptr[COMMAND_LINE_SIZE - 1] = '\0';
return cmdline_ptr;
}
+#endif
static void *elf_kexec_load(struct kimage *image, char *kernel_buf,
unsigned long kernel_len, char *initrd,
@@ -196,12 +198,11 @@ static void *elf_kexec_load(struct kimage *image, char *kernel_buf,
unsigned long cmdline_len)
{
int ret;
+ void *fdt;
unsigned long old_kernel_pbase = ULONG_MAX;
unsigned long new_kernel_pbase = 0UL;
unsigned long initrd_pbase = 0UL;
- unsigned long headers_sz;
unsigned long kernel_start;
- void *fdt, *headers;
struct elfhdr ehdr;
struct kexec_buf kbuf;
struct kexec_elf_info elf_info;
@@ -227,8 +228,11 @@ static void *elf_kexec_load(struct kimage *image, char *kernel_buf,
kbuf.buf_min = new_kernel_pbase + kernel_len;
kbuf.buf_max = ULONG_MAX;
+#ifdef CONFIG_CRASH_DUMP
/* Add elfcorehdr */
if (image->type == KEXEC_TYPE_CRASH) {
+ void *headers;
+ unsigned long headers_sz;
ret = prepare_elf_headers(&headers, &headers_sz);
if (ret) {
pr_err("Preparing elf core header failed\n");
@@ -264,6 +268,7 @@ static void *elf_kexec_load(struct kimage *image, char *kernel_buf,
}
cmdline = modified_cmdline;
}
+#endif
#ifdef CONFIG_ARCH_SUPPORTS_KEXEC_PURGATORY
/* Add purgatory to the image */
diff --git a/arch/riscv/kernel/crash_core.c b/arch/riscv/kernel/vmcore_info.c
index 8706736fd4e2..6d7a22522d63 100644
--- a/arch/riscv/kernel/crash_core.c
+++ b/arch/riscv/kernel/vmcore_info.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
-#include <linux/crash_core.h>
+#include <linux/vmcore_info.h>
#include <linux/pagemap.h>
void arch_crash_save_vmcoreinfo(void)
@@ -8,7 +8,6 @@ void arch_crash_save_vmcoreinfo(void)
VMCOREINFO_NUMBER(phys_ram_base);
vmcoreinfo_append_str("NUMBER(PAGE_OFFSET)=0x%lx\n", PAGE_OFFSET);
- vmcoreinfo_append_str("NUMBER(VMALLOC_START)=0x%lx\n", VMALLOC_START);
vmcoreinfo_append_str("NUMBER(VMALLOC_END)=0x%lx\n", VMALLOC_END);
#ifdef CONFIG_MMU
VMCOREINFO_NUMBER(VA_BITS);
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index fa34cf55037b..b5ffb2ef54ad 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -29,7 +29,6 @@
#include <asm/io.h>
#include <asm/numa.h>
#include <asm/pgtable.h>
-#include <asm/ptdump.h>
#include <asm/sections.h>
#include <asm/soc.h>
#include <asm/tlbflush.h>
@@ -723,8 +722,6 @@ void mark_rodata_ro(void)
if (IS_ENABLED(CONFIG_64BIT))
set_kernel_memory(lm_alias(__start_rodata), lm_alias(_data),
set_memory_ro);
-
- debug_checkwx();
}
#else
static __init pgprot_t pgprot_from_va(uintptr_t va)
@@ -1358,7 +1355,7 @@ static void __init arch_reserve_crashkernel(void)
bool high = false;
int ret;
- if (!IS_ENABLED(CONFIG_KEXEC_CORE))
+ if (!IS_ENABLED(CONFIG_CRASH_RESERVE))
return;
ret = parse_crashkernel(cmdline, memblock_phys_mem_size(),
diff --git a/arch/riscv/mm/ptdump.c b/arch/riscv/mm/ptdump.c
index 657c27bc07a7..1289cc6d3700 100644
--- a/arch/riscv/mm/ptdump.c
+++ b/arch/riscv/mm/ptdump.c
@@ -9,7 +9,6 @@
#include <linux/seq_file.h>
#include <linux/ptdump.h>
-#include <asm/ptdump.h>
#include <linux/pgtable.h>
#include <asm/kasan.h>
@@ -336,7 +335,7 @@ static void ptdump_walk(struct seq_file *s, struct ptd_mm_info *pinfo)
ptdump_walk_pgd(&st.ptdump, pinfo->mm, NULL);
}
-void ptdump_check_wx(void)
+bool ptdump_check_wx(void)
{
struct pg_state st = {
.seq = NULL,
@@ -357,11 +356,16 @@ void ptdump_check_wx(void)
ptdump_walk_pgd(&st.ptdump, &init_mm, NULL);
- if (st.wx_pages)
+ if (st.wx_pages) {
pr_warn("Checked W+X mappings: failed, %lu W+X pages found\n",
st.wx_pages);
- else
+
+ return false;
+ } else {
pr_info("Checked W+X mappings: passed, no W+X pages found\n");
+
+ return true;
+ }
}
static int ptdump_show(struct seq_file *m, void *v)
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 9e52461f35cb..56c86b1efece 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -113,6 +113,7 @@ config S390
select ARCH_INLINE_WRITE_UNLOCK_BH
select ARCH_INLINE_WRITE_UNLOCK_IRQ
select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
+ select ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE
select ARCH_STACKWALK
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_SUPPORTS_DEBUG_PAGEALLOC
diff --git a/arch/s390/boot/vmem.c b/arch/s390/boot/vmem.c
index e3a4500a5a75..09b10bb6e4d0 100644
--- a/arch/s390/boot/vmem.c
+++ b/arch/s390/boot/vmem.c
@@ -333,7 +333,7 @@ static void pgtable_pmd_populate(pud_t *pud, unsigned long addr, unsigned long e
}
pte = boot_pte_alloc();
pmd_populate(&init_mm, pmd, pte);
- } else if (pmd_large(*pmd)) {
+ } else if (pmd_leaf(*pmd)) {
continue;
}
pgtable_pte_populate(pmd, addr, next, mode);
@@ -366,7 +366,7 @@ static void pgtable_pud_populate(p4d_t *p4d, unsigned long addr, unsigned long e
}
pmd = boot_crst_alloc(_SEGMENT_ENTRY_EMPTY);
pud_populate(&init_mm, pud, pmd);
- } else if (pud_large(*pud)) {
+ } else if (pud_leaf(*pud)) {
continue;
}
pgtable_pmd_populate(pud, addr, next, mode);
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h
index 502d655fe6ae..7b84ef6dc4b6 100644
--- a/arch/s390/include/asm/pgalloc.h
+++ b/arch/s390/include/asm/pgalloc.h
@@ -23,9 +23,9 @@ unsigned long *crst_table_alloc(struct mm_struct *);
void crst_table_free(struct mm_struct *, unsigned long *);
unsigned long *page_table_alloc(struct mm_struct *);
-struct page *page_table_alloc_pgste(struct mm_struct *mm);
+struct ptdesc *page_table_alloc_pgste(struct mm_struct *mm);
void page_table_free(struct mm_struct *, unsigned long *);
-void page_table_free_pgste(struct page *page);
+void page_table_free_pgste(struct ptdesc *ptdesc);
extern int page_table_allocate_pgste;
static inline void crst_table_init(unsigned long *crst, unsigned long entry)
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 1299b56e43f6..60950e7a25f5 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -705,23 +705,23 @@ static inline int pud_none(pud_t pud)
return pud_val(pud) == _REGION3_ENTRY_EMPTY;
}
-#define pud_leaf pud_large
-static inline int pud_large(pud_t pud)
+#define pud_leaf pud_leaf
+static inline bool pud_leaf(pud_t pud)
{
if ((pud_val(pud) & _REGION_ENTRY_TYPE_MASK) != _REGION_ENTRY_TYPE_R3)
return 0;
return !!(pud_val(pud) & _REGION3_ENTRY_LARGE);
}
-#define pmd_leaf pmd_large
-static inline int pmd_large(pmd_t pmd)
+#define pmd_leaf pmd_leaf
+static inline bool pmd_leaf(pmd_t pmd)
{
return (pmd_val(pmd) & _SEGMENT_ENTRY_LARGE) != 0;
}
static inline int pmd_bad(pmd_t pmd)
{
- if ((pmd_val(pmd) & _SEGMENT_ENTRY_TYPE_MASK) > 0 || pmd_large(pmd))
+ if ((pmd_val(pmd) & _SEGMENT_ENTRY_TYPE_MASK) > 0 || pmd_leaf(pmd))
return 1;
return (pmd_val(pmd) & ~_SEGMENT_ENTRY_BITS) != 0;
}
@@ -730,7 +730,7 @@ static inline int pud_bad(pud_t pud)
{
unsigned long type = pud_val(pud) & _REGION_ENTRY_TYPE_MASK;
- if (type > _REGION_ENTRY_TYPE_R3 || pud_large(pud))
+ if (type > _REGION_ENTRY_TYPE_R3 || pud_leaf(pud))
return 1;
if (type < _REGION_ENTRY_TYPE_R3)
return 0;
@@ -820,8 +820,8 @@ static inline int pte_protnone(pte_t pte)
static inline int pmd_protnone(pmd_t pmd)
{
- /* pmd_large(pmd) implies pmd_present(pmd) */
- return pmd_large(pmd) && !(pmd_val(pmd) & _SEGMENT_ENTRY_READ);
+ /* pmd_leaf(pmd) implies pmd_present(pmd) */
+ return pmd_leaf(pmd) && !(pmd_val(pmd) & _SEGMENT_ENTRY_READ);
}
#endif
@@ -1316,6 +1316,8 @@ pgprot_t pgprot_writecombine(pgprot_t prot);
#define pgprot_writethrough pgprot_writethrough
pgprot_t pgprot_writethrough(pgprot_t prot);
+#define PFN_PTE_SHIFT PAGE_SHIFT
+
/*
* Set multiple PTEs to consecutive pages with a single call. All PTEs
* are within the same folio, PMD and VMA.
@@ -1383,7 +1385,7 @@ static inline unsigned long pmd_deref(pmd_t pmd)
unsigned long origin_mask;
origin_mask = _SEGMENT_ENTRY_ORIGIN;
- if (pmd_large(pmd))
+ if (pmd_leaf(pmd))
origin_mask = _SEGMENT_ENTRY_ORIGIN_LARGE;
return (unsigned long)__va(pmd_val(pmd) & origin_mask);
}
@@ -1398,7 +1400,7 @@ static inline unsigned long pud_deref(pud_t pud)
unsigned long origin_mask;
origin_mask = _REGION_ENTRY_ORIGIN;
- if (pud_large(pud))
+ if (pud_leaf(pud))
origin_mask = _REGION3_ENTRY_ORIGIN_LARGE;
return (unsigned long)__va(pud_val(pud) & origin_mask);
}
diff --git a/arch/s390/include/asm/ptdump.h b/arch/s390/include/asm/ptdump.h
deleted file mode 100644
index f960b2896606..000000000000
--- a/arch/s390/include/asm/ptdump.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-
-#ifndef _ASM_S390_PTDUMP_H
-#define _ASM_S390_PTDUMP_H
-
-void ptdump_check_wx(void);
-
-static inline void debug_checkwx(void)
-{
- if (IS_ENABLED(CONFIG_DEBUG_WX))
- ptdump_check_wx();
-}
-
-#endif /* _ASM_S390_PTDUMP_H */
diff --git a/arch/s390/include/asm/tlb.h b/arch/s390/include/asm/tlb.h
index d1455a601adc..e95b2c8081eb 100644
--- a/arch/s390/include/asm/tlb.h
+++ b/arch/s390/include/asm/tlb.h
@@ -25,8 +25,9 @@
void __tlb_remove_table(void *_table);
static inline void tlb_flush(struct mmu_gather *tlb);
static inline bool __tlb_remove_page_size(struct mmu_gather *tlb,
- struct encoded_page *page,
- int page_size);
+ struct page *page, bool delay_rmap, int page_size);
+static inline bool __tlb_remove_folio_pages(struct mmu_gather *tlb,
+ struct page *page, unsigned int nr_pages, bool delay_rmap);
#define tlb_flush tlb_flush
#define pte_free_tlb pte_free_tlb
@@ -42,14 +43,29 @@ static inline bool __tlb_remove_page_size(struct mmu_gather *tlb,
* tlb_ptep_clear_flush. In both flush modes the tlb for a page cache page
* has already been freed, so just do free_page_and_swap_cache.
*
- * s390 doesn't delay rmap removal, so there is nothing encoded in
- * the page pointer.
+ * s390 doesn't delay rmap removal.
*/
static inline bool __tlb_remove_page_size(struct mmu_gather *tlb,
- struct encoded_page *page,
- int page_size)
+ struct page *page, bool delay_rmap, int page_size)
{
- free_page_and_swap_cache(encoded_page_ptr(page));
+ VM_WARN_ON_ONCE(delay_rmap);
+
+ free_page_and_swap_cache(page);
+ return false;
+}
+
+static inline bool __tlb_remove_folio_pages(struct mmu_gather *tlb,
+ struct page *page, unsigned int nr_pages, bool delay_rmap)
+{
+ struct encoded_page *encoded_pages[] = {
+ encode_page(page, ENCODED_PAGE_BIT_NR_PAGES_NEXT),
+ encode_nr_pages(nr_pages),
+ };
+
+ VM_WARN_ON_ONCE(delay_rmap);
+ VM_WARN_ON_ONCE(page_folio(page) != page_folio(page + nr_pages - 1));
+
+ free_pages_and_swap_cache(encoded_pages, ARRAY_SIZE(encoded_pages));
return false;
}
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 7a562b4199c8..fa029d0dc28f 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -64,6 +64,7 @@ obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o
obj-$(CONFIG_FUNCTION_TRACER) += mcount.o
obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
obj-$(CONFIG_KEXEC_CORE) += machine_kexec.o relocate_kernel.o
+obj-$(CONFIG_VMCORE_INFO) += vmcore_info.o
obj-$(CONFIG_UPROBES) += uprobes.o
obj-$(CONFIG_JUMP_LABEL) += jump_label.o
diff --git a/arch/s390/kernel/kexec_elf.c b/arch/s390/kernel/kexec_elf.c
index 9da6fa30c447..4d364de43799 100644
--- a/arch/s390/kernel/kexec_elf.c
+++ b/arch/s390/kernel/kexec_elf.c
@@ -40,8 +40,10 @@ static int kexec_file_add_kernel_elf(struct kimage *image,
buf.bufsz = phdr->p_filesz;
buf.mem = ALIGN(phdr->p_paddr, phdr->p_align);
+#ifdef CONFIG_CRASH_DUMP
if (image->type == KEXEC_TYPE_CRASH)
buf.mem += crashk_res.start;
+#endif
buf.memsz = phdr->p_memsz;
data->memsz = ALIGN(data->memsz, phdr->p_align) + buf.memsz;
diff --git a/arch/s390/kernel/kexec_image.c b/arch/s390/kernel/kexec_image.c
index af23eff5774d..a32ce8bea745 100644
--- a/arch/s390/kernel/kexec_image.c
+++ b/arch/s390/kernel/kexec_image.c
@@ -24,8 +24,10 @@ static int kexec_file_add_kernel_image(struct kimage *image,
buf.bufsz = image->kernel_buf_len;
buf.mem = 0;
+#ifdef CONFIG_CRASH_DUMP
if (image->type == KEXEC_TYPE_CRASH)
buf.mem += crashk_res.start;
+#endif
buf.memsz = buf.bufsz;
data->kernel_buf = image->kernel_buf;
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
index c5d0c1cf984b..3aee98efc374 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -210,21 +210,6 @@ void machine_kexec_cleanup(struct kimage *image)
{
}
-void arch_crash_save_vmcoreinfo(void)
-{
- struct lowcore *abs_lc;
-
- VMCOREINFO_SYMBOL(lowcore_ptr);
- VMCOREINFO_SYMBOL(high_memory);
- VMCOREINFO_LENGTH(lowcore_ptr, NR_CPUS);
- vmcoreinfo_append_str("SAMODE31=%lx\n", (unsigned long)__samode31);
- vmcoreinfo_append_str("EAMODE31=%lx\n", (unsigned long)__eamode31);
- vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset());
- abs_lc = get_abs_lowcore();
- abs_lc->vmcore_info = paddr_vmcoreinfo_note();
- put_abs_lowcore(abs_lc);
-}
-
void machine_shutdown(void)
{
}
diff --git a/arch/s390/kernel/machine_kexec_file.c b/arch/s390/kernel/machine_kexec_file.c
index 8d207b82d9fe..c2bac14dd668 100644
--- a/arch/s390/kernel/machine_kexec_file.c
+++ b/arch/s390/kernel/machine_kexec_file.c
@@ -105,6 +105,7 @@ static int kexec_file_update_purgatory(struct kimage *image,
if (ret)
return ret;
+#ifdef CONFIG_CRASH_DUMP
if (image->type == KEXEC_TYPE_CRASH) {
u64 crash_size;
@@ -121,6 +122,7 @@ static int kexec_file_update_purgatory(struct kimage *image,
sizeof(crash_size),
false);
}
+#endif
return ret;
}
@@ -134,8 +136,10 @@ static int kexec_file_add_purgatory(struct kimage *image,
data->memsz = ALIGN(data->memsz, PAGE_SIZE);
buf.mem = data->memsz;
+#ifdef CONFIG_CRASH_DUMP
if (image->type == KEXEC_TYPE_CRASH)
buf.mem += crashk_res.start;
+#endif
ret = kexec_load_purgatory(image, &buf);
if (ret)
@@ -158,8 +162,10 @@ static int kexec_file_add_initrd(struct kimage *image,
data->memsz = ALIGN(data->memsz, PAGE_SIZE);
buf.mem = data->memsz;
+#ifdef CONFIG_CRASH_DUMP
if (image->type == KEXEC_TYPE_CRASH)
buf.mem += crashk_res.start;
+#endif
buf.memsz = buf.bufsz;
data->parm->initrd_start = data->memsz;
@@ -223,8 +229,10 @@ static int kexec_file_add_ipl_report(struct kimage *image,
data->kernel_buf + offsetof(struct lowcore, ipl_parmblock_ptr);
*lc_ipl_parmblock_ptr = (__u32)buf.mem;
+#ifdef CONFIG_CRASH_DUMP
if (image->type == KEXEC_TYPE_CRASH)
buf.mem += crashk_res.start;
+#endif
ret = kexec_add_buffer(&buf);
out:
@@ -268,10 +276,12 @@ void *kexec_file_add_components(struct kimage *image,
memcpy(data.parm->command_line, image->cmdline_buf,
image->cmdline_buf_len);
+#ifdef CONFIG_CRASH_DUMP
if (image->type == KEXEC_TYPE_CRASH) {
data.parm->oldmem_base = crashk_res.start;
data.parm->oldmem_size = crashk_res.end - crashk_res.start + 1;
}
+#endif
if (image->initrd_buf) {
ret = kexec_file_add_initrd(image, &data);
diff --git a/arch/s390/kernel/vmcore_info.c b/arch/s390/kernel/vmcore_info.c
new file mode 100644
index 000000000000..d296dfc22191
--- /dev/null
+++ b/arch/s390/kernel/vmcore_info.c
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/vmcore_info.h>
+#include <asm/abs_lowcore.h>
+#include <linux/mm.h>
+#include <asm/setup.h>
+
+void arch_crash_save_vmcoreinfo(void)
+{
+ struct lowcore *abs_lc;
+
+ VMCOREINFO_SYMBOL(lowcore_ptr);
+ VMCOREINFO_SYMBOL(high_memory);
+ VMCOREINFO_LENGTH(lowcore_ptr, NR_CPUS);
+ vmcoreinfo_append_str("SAMODE31=%lx\n", (unsigned long)__samode31);
+ vmcoreinfo_append_str("EAMODE31=%lx\n", (unsigned long)__eamode31);
+ vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset());
+ abs_lc = get_abs_lowcore();
+ abs_lc->vmcore_info = paddr_vmcoreinfo_note();
+ put_abs_lowcore(abs_lc);
+}
diff --git a/arch/s390/mm/dump_pagetables.c b/arch/s390/mm/dump_pagetables.c
index d37a8f607b71..ffd07ed7b4af 100644
--- a/arch/s390/mm/dump_pagetables.c
+++ b/arch/s390/mm/dump_pagetables.c
@@ -6,7 +6,6 @@
#include <linux/mm.h>
#include <linux/kfence.h>
#include <linux/kasan.h>
-#include <asm/ptdump.h>
#include <asm/kasan.h>
#include <asm/abs_lowcore.h>
#include <asm/nospec-branch.h>
@@ -122,7 +121,6 @@ static void print_prot(struct seq_file *m, unsigned int pr, int level)
static void note_prot_wx(struct pg_state *st, unsigned long addr)
{
-#ifdef CONFIG_DEBUG_WX
if (!st->check_wx)
return;
if (st->current_prot & _PAGE_INVALID)
@@ -139,10 +137,10 @@ static void note_prot_wx(struct pg_state *st, unsigned long addr)
*/
if (addr == PAGE_SIZE && (nospec_uses_trampoline() || !static_key_enabled(&cpu_has_bear)))
return;
- WARN_ONCE(1, "s390/mm: Found insecure W+X mapping at address %pS\n",
+ WARN_ONCE(IS_ENABLED(CONFIG_DEBUG_WX),
+ "s390/mm: Found insecure W+X mapping at address %pS\n",
(void *)st->start_address);
st->wx_pages += (addr - st->start_address) / PAGE_SIZE;
-#endif /* CONFIG_DEBUG_WX */
}
static void note_page(struct ptdump_state *pt_st, unsigned long addr, int level, u64 val)
@@ -194,8 +192,7 @@ static void note_page(struct ptdump_state *pt_st, unsigned long addr, int level,
}
}
-#ifdef CONFIG_DEBUG_WX
-void ptdump_check_wx(void)
+bool ptdump_check_wx(void)
{
struct pg_state st = {
.ptdump = {
@@ -218,16 +215,20 @@ void ptdump_check_wx(void)
};
if (!MACHINE_HAS_NX)
- return;
+ return true;
ptdump_walk_pgd(&st.ptdump, &init_mm, NULL);
- if (st.wx_pages)
+ if (st.wx_pages) {
pr_warn("Checked W+X mappings: FAILED, %lu W+X pages found\n", st.wx_pages);
- else
+
+ return false;
+ } else {
pr_info("Checked W+X mappings: passed, no %sW+X pages found\n",
(nospec_uses_trampoline() || !static_key_enabled(&cpu_has_bear)) ?
"unexpected " : "");
+
+ return true;
+ }
}
-#endif /* CONFIG_DEBUG_WX */
#ifdef CONFIG_PTDUMP_DEBUGFS
static int ptdump_show(struct seq_file *m, void *v)
diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c
index 8da39deb56ca..094b43b121cd 100644
--- a/arch/s390/mm/gmap.c
+++ b/arch/s390/mm/gmap.c
@@ -206,9 +206,11 @@ static void gmap_free(struct gmap *gmap)
/* Free additional data for a shadow gmap */
if (gmap_is_shadow(gmap)) {
+ struct ptdesc *ptdesc, *n;
+
/* Free all page tables. */
- list_for_each_entry_safe(page, next, &gmap->pt_list, lru)
- page_table_free_pgste(page);
+ list_for_each_entry_safe(ptdesc, n, &gmap->pt_list, pt_list)
+ page_table_free_pgste(ptdesc);
gmap_rmap_radix_tree_free(&gmap->host_to_rmap);
/* Release reference to the parent */
gmap_put(gmap->parent);
@@ -596,12 +598,12 @@ int __gmap_link(struct gmap *gmap, unsigned long gaddr, unsigned long vmaddr)
pud = pud_offset(p4d, vmaddr);
VM_BUG_ON(pud_none(*pud));
/* large puds cannot yet be handled */
- if (pud_large(*pud))
+ if (pud_leaf(*pud))
return -EFAULT;
pmd = pmd_offset(pud, vmaddr);
VM_BUG_ON(pmd_none(*pmd));
/* Are we allowed to use huge pages? */
- if (pmd_large(*pmd) && !gmap->mm->context.allow_gmap_hpage_1m)
+ if (pmd_leaf(*pmd) && !gmap->mm->context.allow_gmap_hpage_1m)
return -EFAULT;
/* Link gmap segment table entry location to page table. */
rc = radix_tree_preload(GFP_KERNEL_ACCOUNT);
@@ -613,7 +615,7 @@ int __gmap_link(struct gmap *gmap, unsigned long gaddr, unsigned long vmaddr)
rc = radix_tree_insert(&gmap->host_to_guest,
vmaddr >> PMD_SHIFT, table);
if (!rc) {
- if (pmd_large(*pmd)) {
+ if (pmd_leaf(*pmd)) {
*table = (pmd_val(*pmd) &
_SEGMENT_ENTRY_HARDWARE_BITS_LARGE)
| _SEGMENT_ENTRY_GMAP_UC;
@@ -943,7 +945,7 @@ static inline pmd_t *gmap_pmd_op_walk(struct gmap *gmap, unsigned long gaddr)
}
/* 4k page table entries are locked via the pte (pte_alloc_map_lock). */
- if (!pmd_large(*pmdp))
+ if (!pmd_leaf(*pmdp))
spin_unlock(&gmap->guest_table_lock);
return pmdp;
}
@@ -955,7 +957,7 @@ static inline pmd_t *gmap_pmd_op_walk(struct gmap *gmap, unsigned long gaddr)
*/
static inline void gmap_pmd_op_end(struct gmap *gmap, pmd_t *pmdp)
{
- if (pmd_large(*pmdp))
+ if (pmd_leaf(*pmdp))
spin_unlock(&gmap->guest_table_lock);
}
@@ -1066,7 +1068,7 @@ static int gmap_protect_range(struct gmap *gmap, unsigned long gaddr,
rc = -EAGAIN;
pmdp = gmap_pmd_op_walk(gmap, gaddr);
if (pmdp) {
- if (!pmd_large(*pmdp)) {
+ if (!pmd_leaf(*pmdp)) {
rc = gmap_protect_pte(gmap, gaddr, pmdp, prot,
bits);
if (!rc) {
@@ -1348,7 +1350,7 @@ static void gmap_unshadow_pgt(struct gmap *sg, unsigned long raddr)
{
unsigned long *ste;
phys_addr_t sto, pgt;
- struct page *page;
+ struct ptdesc *ptdesc;
BUG_ON(!gmap_is_shadow(sg));
ste = gmap_table_walk(sg, raddr, 1); /* get segment pointer */
@@ -1361,9 +1363,9 @@ static void gmap_unshadow_pgt(struct gmap *sg, unsigned long raddr)
*ste = _SEGMENT_ENTRY_EMPTY;
__gmap_unshadow_pgt(sg, raddr, __va(pgt));
/* Free page table */
- page = phys_to_page(pgt);
- list_del(&page->lru);
- page_table_free_pgste(page);
+ ptdesc = page_ptdesc(phys_to_page(pgt));
+ list_del(&ptdesc->pt_list);
+ page_table_free_pgste(ptdesc);
}
/**
@@ -1377,7 +1379,7 @@ static void gmap_unshadow_pgt(struct gmap *sg, unsigned long raddr)
static void __gmap_unshadow_sgt(struct gmap *sg, unsigned long raddr,
unsigned long *sgt)
{
- struct page *page;
+ struct ptdesc *ptdesc;
phys_addr_t pgt;
int i;
@@ -1389,9 +1391,9 @@ static void __gmap_unshadow_sgt(struct gmap *sg, unsigned long raddr,
sgt[i] = _SEGMENT_ENTRY_EMPTY;
__gmap_unshadow_pgt(sg, raddr, __va(pgt));
/* Free page table */
- page = phys_to_page(pgt);
- list_del(&page->lru);
- page_table_free_pgste(page);
+ ptdesc = page_ptdesc(phys_to_page(pgt));
+ list_del(&ptdesc->pt_list);
+ page_table_free_pgste(ptdesc);
}
}
@@ -2058,19 +2060,19 @@ int gmap_shadow_pgt(struct gmap *sg, unsigned long saddr, unsigned long pgt,
{
unsigned long raddr, origin;
unsigned long *table;
- struct page *page;
+ struct ptdesc *ptdesc;
phys_addr_t s_pgt;
int rc;
BUG_ON(!gmap_is_shadow(sg) || (pgt & _SEGMENT_ENTRY_LARGE));
/* Allocate a shadow page table */
- page = page_table_alloc_pgste(sg->mm);
- if (!page)
+ ptdesc = page_table_alloc_pgste(sg->mm);
+ if (!ptdesc)
return -ENOMEM;
- page->index = pgt & _SEGMENT_ENTRY_ORIGIN;
+ ptdesc->pt_index = pgt & _SEGMENT_ENTRY_ORIGIN;
if (fake)
- page->index |= GMAP_SHADOW_FAKE_TABLE;
- s_pgt = page_to_phys(page);
+ ptdesc->pt_index |= GMAP_SHADOW_FAKE_TABLE;
+ s_pgt = page_to_phys(ptdesc_page(ptdesc));
/* Install shadow page table */
spin_lock(&sg->guest_table_lock);
table = gmap_table_walk(sg, saddr, 1); /* get segment pointer */
@@ -2088,7 +2090,7 @@ int gmap_shadow_pgt(struct gmap *sg, unsigned long saddr, unsigned long pgt,
/* mark as invalid as long as the parent table is not protected */
*table = (unsigned long) s_pgt | _SEGMENT_ENTRY |
(pgt & _SEGMENT_ENTRY_PROTECT) | _SEGMENT_ENTRY_INVALID;
- list_add(&page->lru, &sg->pt_list);
+ list_add(&ptdesc->pt_list, &sg->pt_list);
if (fake) {
/* nothing to protect for fake tables */
*table &= ~_SEGMENT_ENTRY_INVALID;
@@ -2114,7 +2116,7 @@ int gmap_shadow_pgt(struct gmap *sg, unsigned long saddr, unsigned long pgt,
return rc;
out_free:
spin_unlock(&sg->guest_table_lock);
- page_table_free_pgste(page);
+ page_table_free_pgste(ptdesc);
return rc;
}
@@ -2498,7 +2500,7 @@ void gmap_sync_dirty_log_pmd(struct gmap *gmap, unsigned long bitmap[4],
if (!pmdp)
return;
- if (pmd_large(*pmdp)) {
+ if (pmd_leaf(*pmdp)) {
if (gmap_test_and_clear_dirty_pmd(gmap, pmdp, gaddr))
bitmap_fill(bitmap, _PAGE_ENTRIES);
} else {
diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c
index 297a6d897d5a..c2e8242bd15d 100644
--- a/arch/s390/mm/hugetlbpage.c
+++ b/arch/s390/mm/hugetlbpage.c
@@ -224,7 +224,7 @@ pte_t *huge_pte_offset(struct mm_struct *mm,
if (p4d_present(*p4dp)) {
pudp = pud_offset(p4dp, addr);
if (pud_present(*pudp)) {
- if (pud_large(*pudp))
+ if (pud_leaf(*pudp))
return (pte_t *) pudp;
pmdp = pmd_offset(pudp, addr);
}
@@ -235,12 +235,12 @@ pte_t *huge_pte_offset(struct mm_struct *mm,
int pmd_huge(pmd_t pmd)
{
- return pmd_large(pmd);
+ return pmd_leaf(pmd);
}
int pud_huge(pud_t pud)
{
- return pud_large(pud);
+ return pud_leaf(pud);
}
bool __init arch_hugetlb_valid_size(unsigned long size)
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 43e612bc2bcd..f6391442c0c2 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -37,7 +37,6 @@
#include <asm/pgalloc.h>
#include <asm/ctlreg.h>
#include <asm/kfence.h>
-#include <asm/ptdump.h>
#include <asm/dma.h>
#include <asm/abs_lowcore.h>
#include <asm/tlb.h>
@@ -109,7 +108,6 @@ void mark_rodata_ro(void)
__set_memory_ro(__start_ro_after_init, __end_ro_after_init);
pr_info("Write protected read-only-after-init data: %luk\n", size >> 10);
- debug_checkwx();
}
int set_memory_encrypted(unsigned long vaddr, int numpages)
@@ -281,9 +279,6 @@ int arch_add_memory(int nid, u64 start, u64 size,
unsigned long size_pages = PFN_DOWN(size);
int rc;
- if (WARN_ON_ONCE(params->altmap))
- return -EINVAL;
-
if (WARN_ON_ONCE(params->pgprot.pgprot != PAGE_KERNEL.pgprot))
return -EINVAL;
diff --git a/arch/s390/mm/pageattr.c b/arch/s390/mm/pageattr.c
index 631e3a4ee2de..01bc8fad64d6 100644
--- a/arch/s390/mm/pageattr.c
+++ b/arch/s390/mm/pageattr.c
@@ -185,7 +185,7 @@ static int walk_pmd_level(pud_t *pudp, unsigned long addr, unsigned long end,
if (pmd_none(*pmdp))
return -EINVAL;
next = pmd_addr_end(addr, end);
- if (pmd_large(*pmdp)) {
+ if (pmd_leaf(*pmdp)) {
need_split = !!(flags & SET_MEMORY_4K);
need_split |= !!(addr & ~PMD_MASK);
need_split |= !!(addr + PMD_SIZE > next);
@@ -274,7 +274,7 @@ static int walk_pud_level(p4d_t *p4d, unsigned long addr, unsigned long end,
if (pud_none(*pudp))
return -EINVAL;
next = pud_addr_end(addr, end);
- if (pud_large(*pudp)) {
+ if (pud_leaf(*pudp)) {
need_split = !!(flags & SET_MEMORY_4K);
need_split |= !!(addr & ~PUD_MASK);
need_split |= !!(addr + PUD_SIZE > next);
diff --git a/arch/s390/mm/pgalloc.c b/arch/s390/mm/pgalloc.c
index 008e487c94a6..abb629d7e131 100644
--- a/arch/s390/mm/pgalloc.c
+++ b/arch/s390/mm/pgalloc.c
@@ -135,7 +135,7 @@ err_p4d:
#ifdef CONFIG_PGSTE
-struct page *page_table_alloc_pgste(struct mm_struct *mm)
+struct ptdesc *page_table_alloc_pgste(struct mm_struct *mm)
{
struct ptdesc *ptdesc;
u64 *table;
@@ -147,12 +147,12 @@ struct page *page_table_alloc_pgste(struct mm_struct *mm)
memset64(table, _PAGE_INVALID, PTRS_PER_PTE);
memset64(table + PTRS_PER_PTE, 0, PTRS_PER_PTE);
}
- return ptdesc_page(ptdesc);
+ return ptdesc;
}
-void page_table_free_pgste(struct page *page)
+void page_table_free_pgste(struct ptdesc *ptdesc)
{
- pagetable_free(page_ptdesc(page));
+ pagetable_free(ptdesc);
}
#endif /* CONFIG_PGSTE */
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index 99422926efe1..2c944bafb030 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -470,7 +470,7 @@ static int pmd_lookup(struct mm_struct *mm, unsigned long addr, pmd_t **pmdp)
return -ENOENT;
/* Large PUDs are not supported yet. */
- if (pud_large(*pud))
+ if (pud_leaf(*pud))
return -EFAULT;
*pmdp = pmd_offset(pud, addr);
@@ -721,9 +721,9 @@ static void ptep_zap_swap_entry(struct mm_struct *mm, swp_entry_t entry)
if (!non_swap_entry(entry))
dec_mm_counter(mm, MM_SWAPENTS);
else if (is_migration_entry(entry)) {
- struct page *page = pfn_swap_entry_to_page(entry);
+ struct folio *folio = pfn_swap_entry_folio(entry);
- dec_mm_counter(mm, mm_counter(page));
+ dec_mm_counter(mm, mm_counter(folio));
}
free_swap_and_cache(entry);
}
@@ -827,7 +827,7 @@ again:
return key ? -EFAULT : 0;
}
- if (pmd_large(*pmdp)) {
+ if (pmd_leaf(*pmdp)) {
paddr = pmd_val(*pmdp) & HPAGE_MASK;
paddr |= addr & ~HPAGE_MASK;
/*
@@ -938,7 +938,7 @@ again:
return 0;
}
- if (pmd_large(*pmdp)) {
+ if (pmd_leaf(*pmdp)) {
paddr = pmd_val(*pmdp) & HPAGE_MASK;
paddr |= addr & ~HPAGE_MASK;
cc = page_reset_referenced(paddr);
@@ -1002,7 +1002,7 @@ again:
return 0;
}
- if (pmd_large(*pmdp)) {
+ if (pmd_leaf(*pmdp)) {
paddr = pmd_val(*pmdp) & HPAGE_MASK;
paddr |= addr & ~HPAGE_MASK;
*key = page_get_storage_key(paddr);
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index 186a020857cf..85cddf904cb2 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -33,8 +33,12 @@ static void __ref *vmem_alloc_pages(unsigned int order)
return memblock_alloc(size, size);
}
-static void vmem_free_pages(unsigned long addr, int order)
+static void vmem_free_pages(unsigned long addr, int order, struct vmem_altmap *altmap)
{
+ if (altmap) {
+ vmem_altmap_free(altmap, 1 << order);
+ return;
+ }
/* We don't expect boot memory to be removed ever. */
if (!slab_is_available() ||
WARN_ON_ONCE(PageReserved(virt_to_page((void *)addr))))
@@ -156,7 +160,8 @@ static bool vmemmap_unuse_sub_pmd(unsigned long start, unsigned long end)
/* __ref: we'll only call vmemmap_alloc_block() via vmemmap_populate() */
static int __ref modify_pte_table(pmd_t *pmd, unsigned long addr,
- unsigned long end, bool add, bool direct)
+ unsigned long end, bool add, bool direct,
+ struct vmem_altmap *altmap)
{
unsigned long prot, pages = 0;
int ret = -ENOMEM;
@@ -172,11 +177,11 @@ static int __ref modify_pte_table(pmd_t *pmd, unsigned long addr,
if (pte_none(*pte))
continue;
if (!direct)
- vmem_free_pages((unsigned long) pfn_to_virt(pte_pfn(*pte)), 0);
+ vmem_free_pages((unsigned long)pfn_to_virt(pte_pfn(*pte)), get_order(PAGE_SIZE), altmap);
pte_clear(&init_mm, addr, pte);
} else if (pte_none(*pte)) {
if (!direct) {
- void *new_page = vmemmap_alloc_block(PAGE_SIZE, NUMA_NO_NODE);
+ void *new_page = vmemmap_alloc_block_buf(PAGE_SIZE, NUMA_NO_NODE, altmap);
if (!new_page)
goto out;
@@ -213,7 +218,8 @@ static void try_free_pte_table(pmd_t *pmd, unsigned long start)
/* __ref: we'll only call vmemmap_alloc_block() via vmemmap_populate() */
static int __ref modify_pmd_table(pud_t *pud, unsigned long addr,
- unsigned long end, bool add, bool direct)
+ unsigned long end, bool add, bool direct,
+ struct vmem_altmap *altmap)
{
unsigned long next, prot, pages = 0;
int ret = -ENOMEM;
@@ -230,15 +236,15 @@ static int __ref modify_pmd_table(pud_t *pud, unsigned long addr,
if (!add) {
if (pmd_none(*pmd))
continue;
- if (pmd_large(*pmd)) {
+ if (pmd_leaf(*pmd)) {
if (IS_ALIGNED(addr, PMD_SIZE) &&
IS_ALIGNED(next, PMD_SIZE)) {
if (!direct)
- vmem_free_pages(pmd_deref(*pmd), get_order(PMD_SIZE));
+ vmem_free_pages(pmd_deref(*pmd), get_order(PMD_SIZE), altmap);
pmd_clear(pmd);
pages++;
} else if (!direct && vmemmap_unuse_sub_pmd(addr, next)) {
- vmem_free_pages(pmd_deref(*pmd), get_order(PMD_SIZE));
+ vmem_free_pages(pmd_deref(*pmd), get_order(PMD_SIZE), altmap);
pmd_clear(pmd);
}
continue;
@@ -261,7 +267,7 @@ static int __ref modify_pmd_table(pud_t *pud, unsigned long addr,
* page tables since vmemmap_populate gets
* called for each section separately.
*/
- new_page = vmemmap_alloc_block(PMD_SIZE, NUMA_NO_NODE);
+ new_page = vmemmap_alloc_block_buf(PMD_SIZE, NUMA_NO_NODE, altmap);
if (new_page) {
set_pmd(pmd, __pmd(__pa(new_page) | prot));
if (!IS_ALIGNED(addr, PMD_SIZE) ||
@@ -275,12 +281,12 @@ static int __ref modify_pmd_table(pud_t *pud, unsigned long addr,
if (!pte)
goto out;
pmd_populate(&init_mm, pmd, pte);
- } else if (pmd_large(*pmd)) {
+ } else if (pmd_leaf(*pmd)) {
if (!direct)
vmemmap_use_sub_pmd(addr, next);
continue;
}
- ret = modify_pte_table(pmd, addr, next, add, direct);
+ ret = modify_pte_table(pmd, addr, next, add, direct, altmap);
if (ret)
goto out;
if (!add)
@@ -302,12 +308,12 @@ static void try_free_pmd_table(pud_t *pud, unsigned long start)
for (i = 0; i < PTRS_PER_PMD; i++, pmd++)
if (!pmd_none(*pmd))
return;
- vmem_free_pages(pud_deref(*pud), CRST_ALLOC_ORDER);
+ vmem_free_pages(pud_deref(*pud), CRST_ALLOC_ORDER, NULL);
pud_clear(pud);
}
static int modify_pud_table(p4d_t *p4d, unsigned long addr, unsigned long end,
- bool add, bool direct)
+ bool add, bool direct, struct vmem_altmap *altmap)
{
unsigned long next, prot, pages = 0;
int ret = -ENOMEM;
@@ -323,7 +329,7 @@ static int modify_pud_table(p4d_t *p4d, unsigned long addr, unsigned long end,
if (!add) {
if (pud_none(*pud))
continue;
- if (pud_large(*pud)) {
+ if (pud_leaf(*pud)) {
if (IS_ALIGNED(addr, PUD_SIZE) &&
IS_ALIGNED(next, PUD_SIZE)) {
pud_clear(pud);
@@ -344,10 +350,10 @@ static int modify_pud_table(p4d_t *p4d, unsigned long addr, unsigned long end,
if (!pmd)
goto out;
pud_populate(&init_mm, pud, pmd);
- } else if (pud_large(*pud)) {
+ } else if (pud_leaf(*pud)) {
continue;
}
- ret = modify_pmd_table(pud, addr, next, add, direct);
+ ret = modify_pmd_table(pud, addr, next, add, direct, altmap);
if (ret)
goto out;
if (!add)
@@ -370,12 +376,12 @@ static void try_free_pud_table(p4d_t *p4d, unsigned long start)
if (!pud_none(*pud))
return;
}
- vmem_free_pages(p4d_deref(*p4d), CRST_ALLOC_ORDER);
+ vmem_free_pages(p4d_deref(*p4d), CRST_ALLOC_ORDER, NULL);
p4d_clear(p4d);
}
static int modify_p4d_table(pgd_t *pgd, unsigned long addr, unsigned long end,
- bool add, bool direct)
+ bool add, bool direct, struct vmem_altmap *altmap)
{
unsigned long next;
int ret = -ENOMEM;
@@ -394,7 +400,7 @@ static int modify_p4d_table(pgd_t *pgd, unsigned long addr, unsigned long end,
goto out;
p4d_populate(&init_mm, p4d, pud);
}
- ret = modify_pud_table(p4d, addr, next, add, direct);
+ ret = modify_pud_table(p4d, addr, next, add, direct, altmap);
if (ret)
goto out;
if (!add)
@@ -415,12 +421,12 @@ static void try_free_p4d_table(pgd_t *pgd, unsigned long start)
if (!p4d_none(*p4d))
return;
}
- vmem_free_pages(pgd_deref(*pgd), CRST_ALLOC_ORDER);
+ vmem_free_pages(pgd_deref(*pgd), CRST_ALLOC_ORDER, NULL);
pgd_clear(pgd);
}
static int modify_pagetable(unsigned long start, unsigned long end, bool add,
- bool direct)
+ bool direct, struct vmem_altmap *altmap)
{
unsigned long addr, next;
int ret = -ENOMEM;
@@ -445,7 +451,7 @@ static int modify_pagetable(unsigned long start, unsigned long end, bool add,
goto out;
pgd_populate(&init_mm, pgd, p4d);
}
- ret = modify_p4d_table(pgd, addr, next, add, direct);
+ ret = modify_p4d_table(pgd, addr, next, add, direct, altmap);
if (ret)
goto out;
if (!add)
@@ -458,14 +464,16 @@ out:
return ret;
}
-static int add_pagetable(unsigned long start, unsigned long end, bool direct)
+static int add_pagetable(unsigned long start, unsigned long end, bool direct,
+ struct vmem_altmap *altmap)
{
- return modify_pagetable(start, end, true, direct);
+ return modify_pagetable(start, end, true, direct, altmap);
}
-static int remove_pagetable(unsigned long start, unsigned long end, bool direct)
+static int remove_pagetable(unsigned long start, unsigned long end, bool direct,
+ struct vmem_altmap *altmap)
{
- return modify_pagetable(start, end, false, direct);
+ return modify_pagetable(start, end, false, direct, altmap);
}
/*
@@ -474,7 +482,7 @@ static int remove_pagetable(unsigned long start, unsigned long end, bool direct)
static int vmem_add_range(unsigned long start, unsigned long size)
{
start = (unsigned long)__va(start);
- return add_pagetable(start, start + size, true);
+ return add_pagetable(start, start + size, true, NULL);
}
/*
@@ -483,7 +491,7 @@ static int vmem_add_range(unsigned long start, unsigned long size)
static void vmem_remove_range(unsigned long start, unsigned long size)
{
start = (unsigned long)__va(start);
- remove_pagetable(start, start + size, true);
+ remove_pagetable(start, start + size, true, NULL);
}
/*
@@ -496,9 +504,9 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
mutex_lock(&vmem_mutex);
/* We don't care about the node, just use NUMA_NO_NODE on allocations */
- ret = add_pagetable(start, end, false);
+ ret = add_pagetable(start, end, false, altmap);
if (ret)
- remove_pagetable(start, end, false);
+ remove_pagetable(start, end, false, altmap);
mutex_unlock(&vmem_mutex);
return ret;
}
@@ -509,7 +517,7 @@ void vmemmap_free(unsigned long start, unsigned long end,
struct vmem_altmap *altmap)
{
mutex_lock(&vmem_mutex);
- remove_pagetable(start, end, false);
+ remove_pagetable(start, end, false, altmap);
mutex_unlock(&vmem_mutex);
}
@@ -591,7 +599,7 @@ pte_t *vmem_get_alloc_pte(unsigned long addr, bool alloc)
if (!pmd)
goto out;
pud_populate(&init_mm, pud, pmd);
- } else if (WARN_ON_ONCE(pud_large(*pud))) {
+ } else if (WARN_ON_ONCE(pud_leaf(*pud))) {
goto out;
}
pmd = pmd_offset(pud, addr);
@@ -602,7 +610,7 @@ pte_t *vmem_get_alloc_pte(unsigned long addr, bool alloc)
if (!pte)
goto out;
pmd_populate(&init_mm, pmd, pte);
- } else if (WARN_ON_ONCE(pmd_large(*pmd))) {
+ } else if (WARN_ON_ONCE(pmd_leaf(*pmd))) {
goto out;
}
ptep = pte_offset_kernel(pmd, addr);
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 7500521b2b98..2ad3e29f0ebe 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -2,6 +2,7 @@
config SUPERH
def_bool y
select ARCH_32BIT_OFF_T
+ select ARCH_HAS_CPU_CACHE_ALIASING
select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM && MMU
select ARCH_ENABLE_MEMORY_HOTREMOVE if SPARSEMEM && MMU
select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
diff --git a/arch/sh/include/asm/cachetype.h b/arch/sh/include/asm/cachetype.h
new file mode 100644
index 000000000000..a5fffe536068
--- /dev/null
+++ b/arch/sh/include/asm/cachetype.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_SH_CACHETYPE_H
+#define __ASM_SH_CACHETYPE_H
+
+#include <linux/types.h>
+
+#define cpu_dcache_is_aliasing() true
+
+#endif
diff --git a/arch/sh/kernel/Makefile b/arch/sh/kernel/Makefile
index 2d7e70537de0..ba917008d63e 100644
--- a/arch/sh/kernel/Makefile
+++ b/arch/sh/kernel/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_SH_STANDARD_BIOS) += sh_bios.o
obj-$(CONFIG_KGDB) += kgdb.o
obj-$(CONFIG_MODULES) += sh_ksyms_32.o module.o
obj-$(CONFIG_KEXEC_CORE) += machine_kexec.o relocate_kernel.o
+obj-$(CONFIG_VMCORE_INFO) += vmcore_info.o
obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-$(CONFIG_IO_TRAPPED) += io_trapped.o
diff --git a/arch/sh/kernel/machine_kexec.c b/arch/sh/kernel/machine_kexec.c
index fa3a7b36190a..8321b31d2e19 100644
--- a/arch/sh/kernel/machine_kexec.c
+++ b/arch/sh/kernel/machine_kexec.c
@@ -137,22 +137,14 @@ void machine_kexec(struct kimage *image)
__ftrace_enabled_restore(save_ftrace_enabled);
}
-void arch_crash_save_vmcoreinfo(void)
-{
-#ifdef CONFIG_NUMA
- VMCOREINFO_SYMBOL(node_data);
- VMCOREINFO_LENGTH(node_data, MAX_NUMNODES);
-#endif
-#ifdef CONFIG_X2TLB
- VMCOREINFO_CONFIG(X2TLB);
-#endif
-}
-
void __init reserve_crashkernel(void)
{
unsigned long long crash_size, crash_base;
int ret;
+ if (!IS_ENABLED(CONFIG_CRASH_RESERVE))
+ return;
+
ret = parse_crashkernel(boot_command_line, memblock_phys_mem_size(),
&crash_size, &crash_base, NULL, NULL);
if (ret == 0 && crash_size > 0) {
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index d3175f09b3aa..620e5cf8ae1e 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -220,7 +220,7 @@ void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
request_resource(res, &code_resource);
request_resource(res, &data_resource);
request_resource(res, &bss_resource);
-#ifdef CONFIG_KEXEC_CORE
+#ifdef CONFIG_CRASH_RESERVE
request_resource(res, &crashk_res);
#endif
diff --git a/arch/sh/kernel/vmcore_info.c b/arch/sh/kernel/vmcore_info.c
new file mode 100644
index 000000000000..a244a204a1b1
--- /dev/null
+++ b/arch/sh/kernel/vmcore_info.c
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/vmcore_info.h>
+#include <linux/mm.h>
+
+void arch_crash_save_vmcoreinfo(void)
+{
+#ifdef CONFIG_NUMA
+ VMCOREINFO_SYMBOL(node_data);
+ VMCOREINFO_LENGTH(node_data, MAX_NUMNODES);
+#endif
+#ifdef CONFIG_X2TLB
+ VMCOREINFO_CONFIG(X2TLB);
+#endif
+}
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 7e6bc6fff76b..02c8fd18810c 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -13,6 +13,7 @@ config 64BIT
config SPARC
bool
default y
+ select ARCH_HAS_CPU_CACHE_ALIASING
select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
select ARCH_MIGHT_HAVE_PC_SERIO
select DMA_OPS
diff --git a/arch/sparc/include/asm/cachetype.h b/arch/sparc/include/asm/cachetype.h
new file mode 100644
index 000000000000..caf1c0045892
--- /dev/null
+++ b/arch/sparc/include/asm/cachetype.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_SPARC_CACHETYPE_H
+#define __ASM_SPARC_CACHETYPE_H
+
+#include <asm/page.h>
+
+#ifdef CONFIG_SPARC32
+extern int vac_cache_size;
+#define cpu_dcache_is_aliasing() (vac_cache_size > PAGE_SIZE)
+#else
+#define cpu_dcache_is_aliasing() (L1DCACHE_SIZE > PAGE_SIZE)
+#endif
+
+#endif
diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index a8c871b7d786..4d1bafaba942 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -680,8 +680,8 @@ static inline unsigned long pte_special(pte_t pte)
return pte_val(pte) & _PAGE_SPECIAL;
}
-#define pmd_leaf pmd_large
-static inline unsigned long pmd_large(pmd_t pmd)
+#define pmd_leaf pmd_leaf
+static inline bool pmd_leaf(pmd_t pmd)
{
pte_t pte = __pte(pmd_val(pmd));
@@ -867,8 +867,8 @@ static inline pmd_t *pud_pgtable(pud_t pud)
/* only used by the stubbed out hugetlb gup code, should never be called */
#define p4d_page(p4d) NULL
-#define pud_leaf pud_large
-static inline unsigned long pud_large(pud_t pud)
+#define pud_leaf pud_leaf
+static inline bool pud_leaf(pud_t pud)
{
pte_t pte = __pte(pud_val(pud));
@@ -929,6 +929,8 @@ static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr,
maybe_tlb_batch_add(mm, addr, ptep, orig, fullmm, PAGE_SHIFT);
}
+#define PFN_PTE_SHIFT PAGE_SHIFT
+
static inline void set_ptes(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte, unsigned int nr)
{
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index f83017992eaa..1ca9054d9b97 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -1665,14 +1665,14 @@ bool kern_addr_valid(unsigned long addr)
if (pud_none(*pud))
return false;
- if (pud_large(*pud))
+ if (pud_leaf(*pud))
return pfn_valid(pud_pfn(*pud));
pmd = pmd_offset(pud, addr);
if (pmd_none(*pmd))
return false;
- if (pmd_large(*pmd))
+ if (pmd_leaf(*pmd))
return pfn_valid(pmd_pfn(*pmd));
pte = pte_offset_kernel(pmd, addr);
@@ -2968,7 +2968,7 @@ void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr,
struct mm_struct *mm;
pmd_t entry = *pmd;
- if (!pmd_large(entry) || !pmd_young(entry))
+ if (!pmd_leaf(entry) || !pmd_young(entry))
return;
pte = pmd_val(entry);
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 78050d5d7fac..dd79e15a3c93 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2105,7 +2105,7 @@ config ARCH_SUPPORTS_CRASH_HOTPLUG
def_bool y
config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION
- def_bool CRASH_CORE
+ def_bool CRASH_RESERVE
config PHYSICAL_START
hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
diff --git a/arch/x86/boot/compressed/ident_map_64.c b/arch/x86/boot/compressed/ident_map_64.c
index 909f2a35b60c..dfb9c2deb77c 100644
--- a/arch/x86/boot/compressed/ident_map_64.c
+++ b/arch/x86/boot/compressed/ident_map_64.c
@@ -284,7 +284,7 @@ static int set_clr_page_flags(struct x86_mapping_info *info,
pudp = pud_offset(p4dp, address);
pmdp = pmd_offset(pudp, address);
- if (pmd_large(*pmdp))
+ if (pmd_leaf(*pmdp))
ptep = split_large_pmd(info, pmdp, address);
else
ptep = pte_offset_kernel(pmdp, address);
diff --git a/arch/x86/include/asm/crash_core.h b/arch/x86/include/asm/crash_reserve.h
index 76af98f4e801..152239f95541 100644
--- a/arch/x86/include/asm/crash_core.h
+++ b/arch/x86/include/asm/crash_reserve.h
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _X86_CRASH_CORE_H
-#define _X86_CRASH_CORE_H
+#ifndef _X86_CRASH_RESERVE_H
+#define _X86_CRASH_RESERVE_H
/* 16M alignment for crash kernel regions */
#define CRASH_ALIGN SZ_16M
@@ -39,4 +39,4 @@ static inline unsigned long crash_low_size_default(void)
#endif
}
-#endif /* _X86_CRASH_CORE_H */
+#endif /* _X86_CRASH_RESERVE_H */
diff --git a/arch/x86/include/asm/mmu.h b/arch/x86/include/asm/mmu.h
index 0da5c227f490..ce4677b8b735 100644
--- a/arch/x86/include/asm/mmu.h
+++ b/arch/x86/include/asm/mmu.h
@@ -75,7 +75,7 @@ typedef struct {
.lock = __MUTEX_INITIALIZER(mm.context.lock), \
}
-void leave_mm(int cpu);
+void leave_mm(void);
#define leave_mm leave_mm
#endif /* _ASM_X86_MMU_H */
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index df0f7d4a96f3..315535ffb258 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -31,7 +31,8 @@ struct seq_file;
void ptdump_walk_pgd_level(struct seq_file *m, struct mm_struct *mm);
void ptdump_walk_pgd_level_debugfs(struct seq_file *m, struct mm_struct *mm,
bool user);
-void ptdump_walk_pgd_level_checkwx(void);
+bool ptdump_walk_pgd_level_checkwx(void);
+#define ptdump_check_wx ptdump_walk_pgd_level_checkwx
void ptdump_walk_user_pgd_level_checkwx(void);
/*
@@ -41,10 +42,8 @@ void ptdump_walk_user_pgd_level_checkwx(void);
#define pgprot_decrypted(prot) __pgprot(cc_mkdec(pgprot_val(prot)))
#ifdef CONFIG_DEBUG_WX
-#define debug_checkwx() ptdump_walk_pgd_level_checkwx()
#define debug_checkwx_user() ptdump_walk_user_pgd_level_checkwx()
#else
-#define debug_checkwx() do { } while (0)
#define debug_checkwx_user() do { } while (0)
#endif
@@ -252,8 +251,8 @@ static inline unsigned long pgd_pfn(pgd_t pgd)
return (pgd_val(pgd) & PTE_PFN_MASK) >> PAGE_SHIFT;
}
-#define p4d_leaf p4d_large
-static inline int p4d_large(p4d_t p4d)
+#define p4d_leaf p4d_leaf
+static inline bool p4d_leaf(p4d_t p4d)
{
/* No 512 GiB pages yet */
return 0;
@@ -261,14 +260,14 @@ static inline int p4d_large(p4d_t p4d)
#define pte_page(pte) pfn_to_page(pte_pfn(pte))
-#define pmd_leaf pmd_large
-static inline int pmd_large(pmd_t pte)
+#define pmd_leaf pmd_leaf
+static inline bool pmd_leaf(pmd_t pte)
{
return pmd_flags(pte) & _PAGE_PSE;
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
-/* NOTE: when predicate huge page, consider also pmd_devmap, or use pmd_large */
+/* NOTE: when predicate huge page, consider also pmd_devmap, or use pmd_leaf */
static inline int pmd_trans_huge(pmd_t pmd)
{
return (pmd_val(pmd) & (_PAGE_PSE|_PAGE_DEVMAP)) == _PAGE_PSE;
@@ -956,13 +955,13 @@ static inline int pte_same(pte_t a, pte_t b)
return a.pte == b.pte;
}
-static inline pte_t pte_next_pfn(pte_t pte)
+static inline pte_t pte_advance_pfn(pte_t pte, unsigned long nr)
{
if (__pte_needs_invert(pte_val(pte)))
- return __pte(pte_val(pte) - (1UL << PFN_PTE_SHIFT));
- return __pte(pte_val(pte) + (1UL << PFN_PTE_SHIFT));
+ return __pte(pte_val(pte) - (nr << PFN_PTE_SHIFT));
+ return __pte(pte_val(pte) + (nr << PFN_PTE_SHIFT));
}
-#define pte_next_pfn pte_next_pfn
+#define pte_advance_pfn pte_advance_pfn
static inline int pte_present(pte_t a)
{
@@ -1086,8 +1085,8 @@ static inline pmd_t *pud_pgtable(pud_t pud)
*/
#define pud_page(pud) pfn_to_page(pud_pfn(pud))
-#define pud_leaf pud_large
-static inline int pud_large(pud_t pud)
+#define pud_leaf pud_leaf
+static inline bool pud_leaf(pud_t pud)
{
return (pud_val(pud) & (_PAGE_PSE | _PAGE_PRESENT)) ==
(_PAGE_PSE | _PAGE_PRESENT);
@@ -1097,12 +1096,6 @@ static inline int pud_bad(pud_t pud)
{
return (pud_flags(pud) & ~(_KERNPG_TABLE | _PAGE_USER)) != 0;
}
-#else
-#define pud_leaf pud_large
-static inline int pud_large(pud_t pud)
-{
- return 0;
-}
#endif /* CONFIG_PGTABLE_LEVELS > 2 */
#if CONFIG_PGTABLE_LEVELS > 3
@@ -1419,8 +1412,8 @@ static inline bool pgdp_maps_userspace(void *__ptr)
return (((ptr & ~PAGE_MASK) / sizeof(pgd_t)) < PGD_KERNEL_START);
}
-#define pgd_leaf pgd_large
-static inline int pgd_large(pgd_t pgd) { return 0; }
+#define pgd_leaf pgd_leaf
+static inline bool pgd_leaf(pgd_t pgd) { return false; }
#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION
/*
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index d0c744cb2a0e..74077694da7d 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -100,11 +100,11 @@ obj-$(CONFIG_FTRACE_SYSCALLS) += ftrace.o
obj-$(CONFIG_X86_TSC) += trace_clock.o
obj-$(CONFIG_TRACING) += trace.o
obj-$(CONFIG_RETHOOK) += rethook.o
-obj-$(CONFIG_CRASH_CORE) += crash_core_$(BITS).o
+obj-$(CONFIG_VMCORE_INFO) += vmcore_info_$(BITS).o
obj-$(CONFIG_KEXEC_CORE) += machine_kexec_$(BITS).o
-obj-$(CONFIG_KEXEC_CORE) += relocate_kernel_$(BITS).o crash.o
+obj-$(CONFIG_KEXEC_CORE) += relocate_kernel_$(BITS).o
obj-$(CONFIG_KEXEC_FILE) += kexec-bzimage64.o
-obj-$(CONFIG_CRASH_DUMP) += crash_dump_$(BITS).o
+obj-$(CONFIG_CRASH_DUMP) += crash_dump_$(BITS).o crash.o
obj-y += kprobes/
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_X86_32) += doublefault_32.o
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index ff6e32ec8259..45a280f2161c 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -1804,7 +1804,7 @@ static inline temp_mm_state_t use_temporary_mm(struct mm_struct *mm)
* restoring the previous mm.
*/
if (this_cpu_read(cpu_tlbstate_shared.is_lazy))
- leave_mm(smp_processor_id());
+ leave_mm();
temp_state.mm = this_cpu_read(cpu_tlbstate.loaded_mm);
switch_mm_irqs_off(NULL, mm, current);
diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
index 45e0e70e238c..303fef824167 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -209,7 +209,9 @@ static void hv_machine_shutdown(void)
if (kexec_in_progress)
hyperv_cleanup();
}
+#endif /* CONFIG_KEXEC_CORE */
+#ifdef CONFIG_CRASH_DUMP
static void hv_machine_crash_shutdown(struct pt_regs *regs)
{
if (hv_crash_handler)
@@ -221,7 +223,7 @@ static void hv_machine_crash_shutdown(struct pt_regs *regs)
/* Disable the hypercall page when there is only 1 active CPU. */
hyperv_cleanup();
}
-#endif /* CONFIG_KEXEC_CORE */
+#endif /* CONFIG_CRASH_DUMP */
#endif /* CONFIG_HYPERV */
static uint32_t __init ms_hyperv_platform(void)
@@ -495,10 +497,14 @@ static void __init ms_hyperv_init_platform(void)
no_timer_check = 1;
#endif
-#if IS_ENABLED(CONFIG_HYPERV) && defined(CONFIG_KEXEC_CORE)
+#if IS_ENABLED(CONFIG_HYPERV)
+#if defined(CONFIG_KEXEC_CORE)
machine_ops.shutdown = hv_machine_shutdown;
+#endif
+#if defined(CONFIG_CRASH_DUMP)
machine_ops.crash_shutdown = hv_machine_crash_shutdown;
#endif
+#endif
if (ms_hyperv.features & HV_ACCESS_TSC_INVARIANT) {
/*
* Writing to synthetic MSR 0x40000118 updates/changes the
diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c
index cde167b0ea92..68530fad05f7 100644
--- a/arch/x86/kernel/kexec-bzimage64.c
+++ b/arch/x86/kernel/kexec-bzimage64.c
@@ -263,11 +263,13 @@ setup_boot_parameters(struct kimage *image, struct boot_params *params,
memset(&params->hd0_info, 0, sizeof(params->hd0_info));
memset(&params->hd1_info, 0, sizeof(params->hd1_info));
+#ifdef CONFIG_CRASH_DUMP
if (image->type == KEXEC_TYPE_CRASH) {
ret = crash_setup_memmap_entries(image, params);
if (ret)
return ret;
} else
+#endif
setup_e820_entries(params);
nr_e820_entries = params->e820_entries;
@@ -433,12 +435,14 @@ static void *bzImage64_load(struct kimage *image, char *kernel,
return ERR_PTR(-EINVAL);
}
+#ifdef CONFIG_CRASH_DUMP
/* Allocate and load backup region */
if (image->type == KEXEC_TYPE_CRASH) {
ret = crash_load_segments(image);
if (ret)
return ERR_PTR(ret);
}
+#endif
/*
* Load purgatory. For 64bit entry point, purgatory code can be
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 101a7c1bf200..4cadfd606e8e 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -770,7 +770,7 @@ static struct notifier_block kvm_pv_reboot_nb = {
* won't be valid. In cases like kexec, in which you install a new kernel, this
* means a random memory location will be kept being written.
*/
-#ifdef CONFIG_KEXEC_CORE
+#ifdef CONFIG_CRASH_DUMP
static void kvm_crash_shutdown(struct pt_regs *regs)
{
kvm_guest_cpu_offline(true);
@@ -853,7 +853,7 @@ static void __init kvm_guest_init(void)
kvm_guest_cpu_init();
#endif
-#ifdef CONFIG_KEXEC_CORE
+#ifdef CONFIG_CRASH_DUMP
machine_ops.crash_shutdown = kvm_crash_shutdown;
#endif
diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
index bc0a5348b4a6..b180d8e497c3 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86/kernel/machine_kexec_64.c
@@ -508,6 +508,8 @@ int arch_kimage_file_post_load_cleanup(struct kimage *image)
}
#endif /* CONFIG_KEXEC_FILE */
+#ifdef CONFIG_CRASH_DUMP
+
static int
kexec_mark_range(unsigned long start, unsigned long end, bool protect)
{
@@ -552,6 +554,7 @@ void arch_kexec_unprotect_crashkres(void)
{
kexec_mark_crashkres(false);
}
+#endif
/*
* During a traditional boot under SME, SME will encrypt the kernel,
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 830425e6d38e..f3130f762784 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -796,7 +796,7 @@ struct machine_ops machine_ops __ro_after_init = {
.emergency_restart = native_machine_emergency_restart,
.restart = native_machine_restart,
.halt = native_machine_halt,
-#ifdef CONFIG_KEXEC_CORE
+#ifdef CONFIG_CRASH_DUMP
.crash_shutdown = native_machine_crash_shutdown,
#endif
};
@@ -826,7 +826,7 @@ void machine_halt(void)
machine_ops.halt();
}
-#ifdef CONFIG_KEXEC_CORE
+#ifdef CONFIG_CRASH_DUMP
void machine_crash_shutdown(struct pt_regs *regs)
{
machine_ops.crash_shutdown(regs);
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 46d5a8c520ad..3e1e96efadfe 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -471,7 +471,7 @@ static void __init arch_reserve_crashkernel(void)
bool high = false;
int ret;
- if (!IS_ENABLED(CONFIG_KEXEC_CORE))
+ if (!IS_ENABLED(CONFIG_CRASH_RESERVE))
return;
ret = parse_crashkernel(cmdline, memblock_phys_mem_size(),
diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c
index 2908e063d7d8..18266cc3d98c 100644
--- a/arch/x86/kernel/smp.c
+++ b/arch/x86/kernel/smp.c
@@ -286,7 +286,7 @@ struct smp_ops smp_ops = {
.smp_cpus_done = native_smp_cpus_done,
.stop_other_cpus = native_stop_other_cpus,
-#if defined(CONFIG_KEXEC_CORE)
+#if defined(CONFIG_CRASH_DUMP)
.crash_stop_other_cpus = kdump_nmi_shootdown_cpus,
#endif
.smp_send_reschedule = native_smp_send_reschedule,
diff --git a/arch/x86/kernel/crash_core_32.c b/arch/x86/kernel/vmcore_info_32.c
index 8a89c109e20a..5995a749288a 100644
--- a/arch/x86/kernel/crash_core_32.c
+++ b/arch/x86/kernel/vmcore_info_32.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
-#include <linux/crash_core.h>
+#include <linux/vmcore_info.h>
#include <linux/pgtable.h>
#include <asm/setup.h>
diff --git a/arch/x86/kernel/crash_core_64.c b/arch/x86/kernel/vmcore_info_64.c
index 7d255f882afe..0dec7d868754 100644
--- a/arch/x86/kernel/crash_core_64.c
+++ b/arch/x86/kernel/vmcore_info_64.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
-#include <linux/crash_core.h>
+#include <linux/vmcore_info.h>
#include <linux/pgtable.h>
#include <asm/setup.h>
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 2b515acd8e72..7c9fce512625 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -3110,7 +3110,7 @@ static int host_pfn_mapping_level(struct kvm *kvm, gfn_t gfn,
/*
* Read each entry once. As above, a non-leaf entry can be promoted to
* a huge page _during_ this walk. Re-reading the entry could send the
- * walk into the weeks, e.g. p*d_large() returns false (sees the old
+ * walk into the weeks, e.g. p*d_leaf() returns false (sees the old
* value) and then p*d_offset() walks into the target huge page instead
* of the old page table (sees the new value).
*/
@@ -3126,7 +3126,7 @@ static int host_pfn_mapping_level(struct kvm *kvm, gfn_t gfn,
if (pud_none(pud) || !pud_present(pud))
goto out;
- if (pud_large(pud)) {
+ if (pud_leaf(pud)) {
level = PG_LEVEL_1G;
goto out;
}
@@ -3135,7 +3135,7 @@ static int host_pfn_mapping_level(struct kvm *kvm, gfn_t gfn,
if (pmd_none(pmd) || !pmd_present(pmd))
goto out;
- if (pmd_large(pmd))
+ if (pmd_leaf(pmd))
level = PG_LEVEL_2M;
out:
diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index b7b88c1d91ec..89079ea73e65 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -362,9 +362,9 @@ static void note_page(struct ptdump_state *pt_st, unsigned long addr, int level,
}
}
-static void ptdump_walk_pgd_level_core(struct seq_file *m,
- struct mm_struct *mm, pgd_t *pgd,
- bool checkwx, bool dmesg)
+bool ptdump_walk_pgd_level_core(struct seq_file *m,
+ struct mm_struct *mm, pgd_t *pgd,
+ bool checkwx, bool dmesg)
{
const struct ptdump_range ptdump_ranges[] = {
#ifdef CONFIG_X86_64
@@ -391,12 +391,17 @@ static void ptdump_walk_pgd_level_core(struct seq_file *m,
ptdump_walk_pgd(&st.ptdump, mm, pgd);
if (!checkwx)
- return;
- if (st.wx_pages)
+ return true;
+ if (st.wx_pages) {
pr_info("x86/mm: Checked W+X mappings: FAILED, %lu W+X pages found.\n",
st.wx_pages);
- else
+
+ return false;
+ } else {
pr_info("x86/mm: Checked W+X mappings: passed, no W+X pages found.\n");
+
+ return true;
+ }
}
void ptdump_walk_pgd_level(struct seq_file *m, struct mm_struct *mm)
@@ -431,9 +436,12 @@ void ptdump_walk_user_pgd_level_checkwx(void)
#endif
}
-void ptdump_walk_pgd_level_checkwx(void)
+bool ptdump_walk_pgd_level_checkwx(void)
{
- ptdump_walk_pgd_level_core(NULL, &init_mm, INIT_PGD, true, false);
+ if (!(__supported_pte_mask & _PAGE_NX))
+ return true;
+
+ return ptdump_walk_pgd_level_core(NULL, &init_mm, INIT_PGD, true, false);
}
static int __init pt_dump_init(void)
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 402e08f6b7ec..622d12ec7f08 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -252,7 +252,7 @@ static noinline int vmalloc_fault(unsigned long address)
if (!pmd_k)
return -1;
- if (pmd_large(*pmd_k))
+ if (pmd_leaf(*pmd_k))
return 0;
pte_k = pte_offset_kernel(pmd_k, address);
@@ -321,7 +321,7 @@ static void dump_pagetable(unsigned long address)
* And let's rather not kmap-atomic the pte, just in case
* it's allocated already:
*/
- if (!low_pfn(pmd_pfn(*pmd)) || !pmd_present(*pmd) || pmd_large(*pmd))
+ if (!low_pfn(pmd_pfn(*pmd)) || !pmd_present(*pmd) || pmd_leaf(*pmd))
goto out;
pte = pte_offset_kernel(pmd, address);
@@ -370,7 +370,7 @@ static void dump_pagetable(unsigned long address)
goto bad;
pr_cont("P4D %lx ", p4d_val(*p4d));
- if (!p4d_present(*p4d) || p4d_large(*p4d))
+ if (!p4d_present(*p4d) || p4d_leaf(*p4d))
goto out;
pud = pud_offset(p4d, address);
@@ -378,7 +378,7 @@ static void dump_pagetable(unsigned long address)
goto bad;
pr_cont("PUD %lx ", pud_val(*pud));
- if (!pud_present(*pud) || pud_large(*pud))
+ if (!pud_present(*pud) || pud_leaf(*pud))
goto out;
pmd = pmd_offset(pud, address);
@@ -386,7 +386,7 @@ static void dump_pagetable(unsigned long address)
goto bad;
pr_cont("PMD %lx ", pmd_val(*pmd));
- if (!pmd_present(*pmd) || pmd_large(*pmd))
+ if (!pmd_present(*pmd) || pmd_leaf(*pmd))
goto out;
pte = pte_offset_kernel(pmd, address);
@@ -1036,21 +1036,21 @@ spurious_kernel_fault(unsigned long error_code, unsigned long address)
if (!p4d_present(*p4d))
return 0;
- if (p4d_large(*p4d))
+ if (p4d_leaf(*p4d))
return spurious_kernel_fault_check(error_code, (pte_t *) p4d);
pud = pud_offset(p4d, address);
if (!pud_present(*pud))
return 0;
- if (pud_large(*pud))
+ if (pud_leaf(*pud))
return spurious_kernel_fault_check(error_code, (pte_t *) pud);
pmd = pmd_offset(pud, address);
if (!pmd_present(*pmd))
return 0;
- if (pmd_large(*pmd))
+ if (pmd_leaf(*pmd))
return spurious_kernel_fault_check(error_code, (pte_t *) pmd);
pte = pte_offset_kernel(pmd, address);
diff --git a/arch/x86/mm/ident_map.c b/arch/x86/mm/ident_map.c
index f50cc210a981..a204a332c71f 100644
--- a/arch/x86/mm/ident_map.c
+++ b/arch/x86/mm/ident_map.c
@@ -33,7 +33,7 @@ static int ident_pud_init(struct x86_mapping_info *info, pud_t *pud_page,
next = end;
/* if this is already a gbpage, this portion is already mapped */
- if (pud_large(*pud))
+ if (pud_leaf(*pud))
continue;
/* Is using a gbpage allowed? */
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index b63403d7179d..ac41b1e0940d 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -463,7 +463,7 @@ void __init native_pagetable_init(void)
break;
/* should not be large page here */
- if (pmd_large(*pmd)) {
+ if (pmd_leaf(*pmd)) {
pr_warn("try to clear pte for ram above max_low_pfn: pfn: %lx pmd: %p pmd phys: %lx, but pmd is big page and is not using pte !\n",
pfn, pmd, __pa(pmd));
BUG_ON(1);
@@ -800,6 +800,4 @@ void mark_rodata_ro(void)
set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT);
#endif
mark_nxdata_nx();
- if (__supported_pte_mask & _PAGE_NX)
- debug_checkwx();
}
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index a0dffaca6d2b..7e177856ee4f 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -530,7 +530,7 @@ phys_pmd_init(pmd_t *pmd_page, unsigned long paddr, unsigned long paddr_end,
}
if (!pmd_none(*pmd)) {
- if (!pmd_large(*pmd)) {
+ if (!pmd_leaf(*pmd)) {
spin_lock(&init_mm.page_table_lock);
pte = (pte_t *)pmd_page_vaddr(*pmd);
paddr_last = phys_pte_init(pte, paddr,
@@ -617,7 +617,7 @@ phys_pud_init(pud_t *pud_page, unsigned long paddr, unsigned long paddr_end,
}
if (!pud_none(*pud)) {
- if (!pud_large(*pud)) {
+ if (!pud_leaf(*pud)) {
pmd = pmd_offset(pud, 0);
paddr_last = phys_pmd_init(pmd, paddr,
paddr_end,
@@ -1114,7 +1114,7 @@ remove_pmd_table(pmd_t *pmd_start, unsigned long addr, unsigned long end,
if (!pmd_present(*pmd))
continue;
- if (pmd_large(*pmd)) {
+ if (pmd_leaf(*pmd)) {
if (IS_ALIGNED(addr, PMD_SIZE) &&
IS_ALIGNED(next, PMD_SIZE)) {
if (!direct)
@@ -1163,7 +1163,7 @@ remove_pud_table(pud_t *pud_start, unsigned long addr, unsigned long end,
if (!pud_present(*pud))
continue;
- if (pud_large(*pud) &&
+ if (pud_leaf(*pud) &&
IS_ALIGNED(addr, PUD_SIZE) &&
IS_ALIGNED(next, PUD_SIZE)) {
spin_lock(&init_mm.page_table_lock);
@@ -1197,7 +1197,7 @@ remove_p4d_table(p4d_t *p4d_start, unsigned long addr, unsigned long end,
if (!p4d_present(*p4d))
continue;
- BUILD_BUG_ON(p4d_large(*p4d));
+ BUILD_BUG_ON(p4d_leaf(*p4d));
pud_base = pud_offset(p4d, 0);
remove_pud_table(pud_base, addr, next, altmap, direct);
@@ -1412,8 +1412,6 @@ void mark_rodata_ro(void)
(void *)text_end, (void *)rodata_start);
free_kernel_image_pages("unused kernel image (rodata/data gap)",
(void *)rodata_end, (void *)_sdata);
-
- debug_checkwx();
}
/*
@@ -1522,9 +1520,9 @@ void __meminit vmemmap_set_pmd(pmd_t *pmd, void *p, int node,
int __meminit vmemmap_check_pmd(pmd_t *pmd, int node,
unsigned long addr, unsigned long next)
{
- int large = pmd_large(*pmd);
+ int large = pmd_leaf(*pmd);
- if (pmd_large(*pmd)) {
+ if (pmd_leaf(*pmd)) {
vmemmap_verify((pte_t *)pmd, node, addr, next);
vmemmap_use_sub_pmd(addr, next);
}
diff --git a/arch/x86/mm/kasan_init_64.c b/arch/x86/mm/kasan_init_64.c
index 0302491d799d..9dddf19a5571 100644
--- a/arch/x86/mm/kasan_init_64.c
+++ b/arch/x86/mm/kasan_init_64.c
@@ -95,7 +95,7 @@ static void __init kasan_populate_pud(pud_t *pud, unsigned long addr,
pmd = pmd_offset(pud, addr);
do {
next = pmd_addr_end(addr, end);
- if (!pmd_large(*pmd))
+ if (!pmd_leaf(*pmd))
kasan_populate_pmd(pmd, addr, next, nid);
} while (pmd++, addr = next, addr != end);
}
@@ -115,7 +115,7 @@ static void __init kasan_populate_p4d(p4d_t *p4d, unsigned long addr,
pud = pud_offset(p4d, addr);
do {
next = pud_addr_end(addr, end);
- if (!pud_large(*pud))
+ if (!pud_leaf(*pud))
kasan_populate_pud(pud, addr, next, nid);
} while (pud++, addr = next, addr != end);
}
diff --git a/arch/x86/mm/mem_encrypt_identity.c b/arch/x86/mm/mem_encrypt_identity.c
index 64b5005d49e5..ac33b2263a43 100644
--- a/arch/x86/mm/mem_encrypt_identity.c
+++ b/arch/x86/mm/mem_encrypt_identity.c
@@ -141,7 +141,7 @@ static pud_t __head *sme_prepare_pgd(struct sme_populate_pgd_data *ppd)
set_pud(pud, __pud(PUD_FLAGS | __pa(pmd)));
}
- if (pud_large(*pud))
+ if (pud_leaf(*pud))
return NULL;
return pud;
@@ -157,7 +157,7 @@ static void __head sme_populate_pgd_large(struct sme_populate_pgd_data *ppd)
return;
pmd = pmd_offset(pud, ppd->vaddr);
- if (pmd_large(*pmd))
+ if (pmd_leaf(*pmd))
return;
set_pmd(pmd, __pmd(ppd->paddr | ppd->pmd_flags));
@@ -181,7 +181,7 @@ static void __head sme_populate_pgd(struct sme_populate_pgd_data *ppd)
set_pmd(pmd, __pmd(PMD_FLAGS | __pa(pte)));
}
- if (pmd_large(*pmd))
+ if (pmd_leaf(*pmd))
return;
pte = pte_offset_kernel(pmd, ppd->vaddr);
diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c
index e5b2985a7c51..80c9037ffadf 100644
--- a/arch/x86/mm/pat/set_memory.c
+++ b/arch/x86/mm/pat/set_memory.c
@@ -676,7 +676,7 @@ pte_t *lookup_address_in_pgd(pgd_t *pgd, unsigned long address,
return NULL;
*level = PG_LEVEL_512G;
- if (p4d_large(*p4d) || !p4d_present(*p4d))
+ if (p4d_leaf(*p4d) || !p4d_present(*p4d))
return (pte_t *)p4d;
pud = pud_offset(p4d, address);
@@ -684,7 +684,7 @@ pte_t *lookup_address_in_pgd(pgd_t *pgd, unsigned long address,
return NULL;
*level = PG_LEVEL_1G;
- if (pud_large(*pud) || !pud_present(*pud))
+ if (pud_leaf(*pud) || !pud_present(*pud))
return (pte_t *)pud;
pmd = pmd_offset(pud, address);
@@ -692,7 +692,7 @@ pte_t *lookup_address_in_pgd(pgd_t *pgd, unsigned long address,
return NULL;
*level = PG_LEVEL_2M;
- if (pmd_large(*pmd) || !pmd_present(*pmd))
+ if (pmd_leaf(*pmd) || !pmd_present(*pmd))
return (pte_t *)pmd;
*level = PG_LEVEL_4K;
@@ -739,11 +739,11 @@ pmd_t *lookup_pmd_address(unsigned long address)
return NULL;
p4d = p4d_offset(pgd, address);
- if (p4d_none(*p4d) || p4d_large(*p4d) || !p4d_present(*p4d))
+ if (p4d_none(*p4d) || p4d_leaf(*p4d) || !p4d_present(*p4d))
return NULL;
pud = pud_offset(p4d, address);
- if (pud_none(*pud) || pud_large(*pud) || !pud_present(*pud))
+ if (pud_none(*pud) || pud_leaf(*pud) || !pud_present(*pud))
return NULL;
return pmd_offset(pud, address);
@@ -1233,7 +1233,7 @@ static void unmap_pmd_range(pud_t *pud, unsigned long start, unsigned long end)
* Try to unmap in 2M chunks.
*/
while (end - start >= PMD_SIZE) {
- if (pmd_large(*pmd))
+ if (pmd_leaf(*pmd))
pmd_clear(pmd);
else
__unmap_pmd_range(pud, pmd, start, start + PMD_SIZE);
@@ -1278,7 +1278,7 @@ static void unmap_pud_range(p4d_t *p4d, unsigned long start, unsigned long end)
*/
while (end - start >= PUD_SIZE) {
- if (pud_large(*pud))
+ if (pud_leaf(*pud))
pud_clear(pud);
else
unmap_pmd_range(pud, start, start + PUD_SIZE);
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index cceb779d882d..d007591b8059 100644
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -777,7 +777,7 @@ int pmd_set_huge(pmd_t *pmd, phys_addr_t addr, pgprot_t prot)
*/
int pud_clear_huge(pud_t *pud)
{
- if (pud_large(*pud)) {
+ if (pud_leaf(*pud)) {
pud_clear(pud);
return 1;
}
@@ -792,7 +792,7 @@ int pud_clear_huge(pud_t *pud)
*/
int pmd_clear_huge(pmd_t *pmd)
{
- if (pmd_large(*pmd)) {
+ if (pmd_leaf(*pmd)) {
pmd_clear(pmd);
return 1;
}
diff --git a/arch/x86/mm/pti.c b/arch/x86/mm/pti.c
index 669ba1c345b3..2e69abf4f852 100644
--- a/arch/x86/mm/pti.c
+++ b/arch/x86/mm/pti.c
@@ -185,7 +185,7 @@ static p4d_t *pti_user_pagetable_walk_p4d(unsigned long address)
set_pgd(pgd, __pgd(_KERNPG_TABLE | __pa(new_p4d_page)));
}
- BUILD_BUG_ON(pgd_large(*pgd) != 0);
+ BUILD_BUG_ON(pgd_leaf(*pgd) != 0);
return p4d_offset(pgd, address);
}
@@ -206,7 +206,7 @@ static pmd_t *pti_user_pagetable_walk_pmd(unsigned long address)
if (!p4d)
return NULL;
- BUILD_BUG_ON(p4d_large(*p4d) != 0);
+ BUILD_BUG_ON(p4d_leaf(*p4d) != 0);
if (p4d_none(*p4d)) {
unsigned long new_pud_page = __get_free_page(gfp);
if (WARN_ON_ONCE(!new_pud_page))
@@ -217,7 +217,7 @@ static pmd_t *pti_user_pagetable_walk_pmd(unsigned long address)
pud = pud_offset(p4d, address);
/* The user page tables do not use large mappings: */
- if (pud_large(*pud)) {
+ if (pud_leaf(*pud)) {
WARN_ON(1);
return NULL;
}
@@ -252,7 +252,7 @@ static pte_t *pti_user_pagetable_walk_pte(unsigned long address)
return NULL;
/* We can't do anything sensible if we hit a large mapping. */
- if (pmd_large(*pmd)) {
+ if (pmd_leaf(*pmd)) {
WARN_ON(1);
return NULL;
}
@@ -341,7 +341,7 @@ pti_clone_pgtable(unsigned long start, unsigned long end,
continue;
}
- if (pmd_large(*pmd) || level == PTI_CLONE_PMD) {
+ if (pmd_leaf(*pmd) || level == PTI_CLONE_PMD) {
target_pmd = pti_user_pagetable_walk_pmd(addr);
if (WARN_ON(!target_pmd))
return;
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 4af930947380..44ac64f3a047 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -299,7 +299,7 @@ static void load_new_mm_cr3(pgd_t *pgdir, u16 new_asid, unsigned long lam,
write_cr3(new_mm_cr3);
}
-void leave_mm(int cpu)
+void leave_mm(void)
{
struct mm_struct *loaded_mm = this_cpu_read(cpu_tlbstate.loaded_mm);
@@ -327,7 +327,7 @@ void switch_mm(struct mm_struct *prev, struct mm_struct *next,
unsigned long flags;
local_irq_save(flags);
- switch_mm_irqs_off(prev, next, tsk);
+ switch_mm_irqs_off(NULL, next, tsk);
local_irq_restore(flags);
}
@@ -492,10 +492,16 @@ void cr4_update_pce(void *ignored)
static inline void cr4_update_pce_mm(struct mm_struct *mm) { }
#endif
-void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
+/*
+ * This optimizes when not actually switching mm's. Some architectures use the
+ * 'unused' argument for this optimization, but x86 must use
+ * 'cpu_tlbstate.loaded_mm' instead because it does not always keep
+ * 'current->active_mm' up to date.
+ */
+void switch_mm_irqs_off(struct mm_struct *unused, struct mm_struct *next,
struct task_struct *tsk)
{
- struct mm_struct *real_prev = this_cpu_read(cpu_tlbstate.loaded_mm);
+ struct mm_struct *prev = this_cpu_read(cpu_tlbstate.loaded_mm);
u16 prev_asid = this_cpu_read(cpu_tlbstate.loaded_mm_asid);
unsigned long new_lam = mm_lam_cr3_mask(next);
bool was_lazy = this_cpu_read(cpu_tlbstate_shared.is_lazy);
@@ -504,15 +510,6 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
bool need_flush;
u16 new_asid;
- /*
- * NB: The scheduler will call us with prev == next when switching
- * from lazy TLB mode to normal mode if active_mm isn't changing.
- * When this happens, we don't assume that CR3 (and hence
- * cpu_tlbstate.loaded_mm) matches next.
- *
- * NB: leave_mm() calls us with prev == NULL and tsk == NULL.
- */
-
/* We don't want flush_tlb_func() to run concurrently with us. */
if (IS_ENABLED(CONFIG_PROVE_LOCKING))
WARN_ON_ONCE(!irqs_disabled());
@@ -527,7 +524,7 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
* isn't free.
*/
#ifdef CONFIG_DEBUG_VM
- if (WARN_ON_ONCE(__read_cr3() != build_cr3(real_prev->pgd, prev_asid,
+ if (WARN_ON_ONCE(__read_cr3() != build_cr3(prev->pgd, prev_asid,
tlbstate_lam_cr3_mask()))) {
/*
* If we were to BUG here, we'd be very likely to kill
@@ -559,7 +556,7 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
* provides that full memory barrier and core serializing
* instruction.
*/
- if (real_prev == next) {
+ if (prev == next) {
/* Not actually switching mm's */
VM_WARN_ON(this_cpu_read(cpu_tlbstate.ctxs[prev_asid].ctx_id) !=
next->context.ctx_id);
@@ -574,7 +571,7 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
* mm_cpumask. The TLB shootdown code can figure out from
* cpu_tlbstate_shared.is_lazy whether or not to send an IPI.
*/
- if (WARN_ON_ONCE(real_prev != &init_mm &&
+ if (WARN_ON_ONCE(prev != &init_mm &&
!cpumask_test_cpu(cpu, mm_cpumask(next))))
cpumask_set_cpu(cpu, mm_cpumask(next));
@@ -616,10 +613,10 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
* Skip kernel threads; we never send init_mm TLB flushing IPIs,
* but the bitmap manipulation can cause cache line contention.
*/
- if (real_prev != &init_mm) {
+ if (prev != &init_mm) {
VM_WARN_ON_ONCE(!cpumask_test_cpu(cpu,
- mm_cpumask(real_prev)));
- cpumask_clear_cpu(cpu, mm_cpumask(real_prev));
+ mm_cpumask(prev)));
+ cpumask_clear_cpu(cpu, mm_cpumask(prev));
}
/*
@@ -656,9 +653,9 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
this_cpu_write(cpu_tlbstate.loaded_mm, next);
this_cpu_write(cpu_tlbstate.loaded_mm_asid, new_asid);
- if (next != real_prev) {
+ if (next != prev) {
cr4_update_pce_mm(next);
- switch_ldt(real_prev, next);
+ switch_ldt(prev, next);
}
}
diff --git a/arch/x86/power/hibernate.c b/arch/x86/power/hibernate.c
index 6f955eb1e163..5b81d19cd114 100644
--- a/arch/x86/power/hibernate.c
+++ b/arch/x86/power/hibernate.c
@@ -165,17 +165,17 @@ int relocate_restore_code(void)
pgd = (pgd_t *)__va(read_cr3_pa()) +
pgd_index(relocated_restore_code);
p4d = p4d_offset(pgd, relocated_restore_code);
- if (p4d_large(*p4d)) {
+ if (p4d_leaf(*p4d)) {
set_p4d(p4d, __p4d(p4d_val(*p4d) & ~_PAGE_NX));
goto out;
}
pud = pud_offset(p4d, relocated_restore_code);
- if (pud_large(*pud)) {
+ if (pud_leaf(*pud)) {
set_pud(pud, __pud(pud_val(*pud) & ~_PAGE_NX));
goto out;
}
pmd = pmd_offset(pud, relocated_restore_code);
- if (pmd_large(*pmd)) {
+ if (pmd_leaf(*pmd)) {
set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_NX));
goto out;
}
diff --git a/arch/x86/xen/enlighten_hvm.c b/arch/x86/xen/enlighten_hvm.c
index 99a68fa71dbe..c001a2296582 100644
--- a/arch/x86/xen/enlighten_hvm.c
+++ b/arch/x86/xen/enlighten_hvm.c
@@ -148,7 +148,9 @@ static void xen_hvm_shutdown(void)
if (kexec_in_progress)
xen_reboot(SHUTDOWN_soft_reset);
}
+#endif
+#ifdef CONFIG_CRASH_DUMP
static void xen_hvm_crash_shutdown(struct pt_regs *regs)
{
native_machine_crash_shutdown(regs);
@@ -236,6 +238,8 @@ static void __init xen_hvm_guest_init(void)
#ifdef CONFIG_KEXEC_CORE
machine_ops.shutdown = xen_hvm_shutdown;
+#endif
+#ifdef CONFIG_CRASH_DUMP
machine_ops.crash_shutdown = xen_hvm_crash_shutdown;
#endif
}
diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c
index 72af496a160c..54e0d311dcc9 100644
--- a/arch/x86/xen/mmu_pv.c
+++ b/arch/x86/xen/mmu_pv.c
@@ -913,7 +913,7 @@ static void drop_mm_ref_this_cpu(void *info)
struct mm_struct *mm = info;
if (this_cpu_read(cpu_tlbstate.loaded_mm) == mm)
- leave_mm(smp_processor_id());
+ leave_mm();
/*
* If this cpu still has a stale cr3 reference, then make sure
@@ -1059,7 +1059,7 @@ static void __init xen_cleanmfnmap_pmd(pmd_t *pmd, bool unpin)
pte_t *pte_tbl;
int i;
- if (pmd_large(*pmd)) {
+ if (pmd_leaf(*pmd)) {
pa = pmd_val(*pmd) & PHYSICAL_PAGE_MASK;
xen_free_ro_pages(pa, PMD_SIZE);
return;
@@ -1082,7 +1082,7 @@ static void __init xen_cleanmfnmap_pud(pud_t *pud, bool unpin)
pmd_t *pmd_tbl;
int i;
- if (pud_large(*pud)) {
+ if (pud_leaf(*pud)) {
pa = pud_val(*pud) & PHYSICAL_PAGE_MASK;
xen_free_ro_pages(pa, PUD_SIZE);
return;
@@ -1104,7 +1104,7 @@ static void __init xen_cleanmfnmap_p4d(p4d_t *p4d, bool unpin)
pud_t *pud_tbl;
int i;
- if (p4d_large(*p4d)) {
+ if (p4d_leaf(*p4d)) {
pa = p4d_val(*p4d) & PHYSICAL_PAGE_MASK;
xen_free_ro_pages(pa, P4D_SIZE);
return;
@@ -1863,7 +1863,7 @@ static phys_addr_t __init xen_early_virt_to_phys(unsigned long vaddr)
if (!pud_present(pud))
return 0;
pa = pud_val(pud) & PTE_PFN_MASK;
- if (pud_large(pud))
+ if (pud_leaf(pud))
return pa + (vaddr & ~PUD_MASK);
pmd = native_make_pmd(xen_read_phys_ulong(pa + pmd_index(vaddr) *
@@ -1871,7 +1871,7 @@ static phys_addr_t __init xen_early_virt_to_phys(unsigned long vaddr)
if (!pmd_present(pmd))
return 0;
pa = pmd_val(pmd) & PTE_PFN_MASK;
- if (pmd_large(pmd))
+ if (pmd_leaf(pmd))
return pa + (vaddr & ~PMD_MASK);
pte = native_make_pte(xen_read_phys_ulong(pa + pte_index(vaddr) *
@@ -2520,7 +2520,7 @@ out:
}
EXPORT_SYMBOL_GPL(xen_remap_pfn);
-#ifdef CONFIG_KEXEC_CORE
+#ifdef CONFIG_VMCORE_INFO
phys_addr_t paddr_vmcoreinfo_note(void)
{
if (xen_pv_domain())
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 87ec35b3363b..f200a4ec044e 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -2,6 +2,7 @@
config XTENSA
def_bool y
select ARCH_32BIT_OFF_T
+ select ARCH_HAS_CPU_CACHE_ALIASING
select ARCH_HAS_BINFMT_FLAT if !MMU
select ARCH_HAS_CURRENT_STACK_POINTER
select ARCH_HAS_DEBUG_VM_PGTABLE
diff --git a/arch/xtensa/include/asm/cachetype.h b/arch/xtensa/include/asm/cachetype.h
new file mode 100644
index 000000000000..51bd49e2a1c5
--- /dev/null
+++ b/arch/xtensa/include/asm/cachetype.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_XTENSA_CACHETYPE_H
+#define __ASM_XTENSA_CACHETYPE_H
+
+#include <asm/cache.h>
+#include <asm/page.h>
+
+#define cpu_dcache_is_aliasing() (DCACHE_WAY_SIZE > PAGE_SIZE)
+
+#endif