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-rw-r--r--arch/powerpc/include/asm/book3s/32/pgtable.h1
-rw-r--r--arch/powerpc/include/asm/book3s/64/hash-4k.h3
-rw-r--r--arch/powerpc/include/asm/book3s/64/hash-64k.h16
-rw-r--r--arch/powerpc/include/asm/book3s/64/hash.h13
-rw-r--r--arch/powerpc/include/asm/book3s/64/pgalloc.h16
-rw-r--r--arch/powerpc/include/asm/book3s/64/pgtable.h4
-rw-r--r--arch/powerpc/include/asm/exception-64s.h2
-rw-r--r--arch/powerpc/include/asm/hw_irq.h12
-rw-r--r--arch/powerpc/include/asm/kexec.h6
-rw-r--r--arch/powerpc/include/asm/nohash/32/pgtable.h1
-rw-r--r--arch/powerpc/include/asm/nohash/64/pgtable.h1
-rw-r--r--arch/powerpc/include/asm/topology.h10
-rw-r--r--arch/powerpc/kernel/exceptions-64e.S2
-rw-r--r--arch/powerpc/kernel/exceptions-64s.S6
-rw-r--r--arch/powerpc/mm/hash64_4k.c4
-rw-r--r--arch/powerpc/mm/hash64_64k.c8
-rw-r--r--arch/powerpc/mm/hash_utils_64.c1
-rw-r--r--arch/powerpc/mm/hugetlbpage-hash64.c10
-rw-r--r--arch/powerpc/mm/init-common.c4
-rw-r--r--arch/powerpc/mm/numa.c5
-rw-r--r--arch/powerpc/mm/pgtable-radix.c117
-rw-r--r--arch/powerpc/mm/pgtable_64.c4
-rw-r--r--arch/powerpc/mm/tlb_hash64.c9
-rw-r--r--arch/powerpc/platforms/powernv/vas-window.c16
-rw-r--r--arch/powerpc/platforms/pseries/hotplug-cpu.c4
-rw-r--r--arch/powerpc/platforms/pseries/ras.c31
-rw-r--r--drivers/misc/ocxl/file.c2
-rw-r--r--tools/testing/selftests/powerpc/alignment/alignment_handler.c2
28 files changed, 231 insertions, 79 deletions
diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h
index 30a155c0a6b0..c615abdce119 100644
--- a/arch/powerpc/include/asm/book3s/32/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/32/pgtable.h
@@ -16,6 +16,7 @@
#define PGD_INDEX_SIZE (32 - PGDIR_SHIFT)
#define PMD_CACHE_INDEX PMD_INDEX_SIZE
+#define PUD_CACHE_INDEX PUD_INDEX_SIZE
#ifndef __ASSEMBLY__
#define PTE_TABLE_SIZE (sizeof(pte_t) << PTE_INDEX_SIZE)
diff --git a/arch/powerpc/include/asm/book3s/64/hash-4k.h b/arch/powerpc/include/asm/book3s/64/hash-4k.h
index 949d691094a4..67c5475311ee 100644
--- a/arch/powerpc/include/asm/book3s/64/hash-4k.h
+++ b/arch/powerpc/include/asm/book3s/64/hash-4k.h
@@ -63,7 +63,8 @@ static inline int hash__hugepd_ok(hugepd_t hpd)
* keeping the prototype consistent across the two formats.
*/
static inline unsigned long pte_set_hidx(pte_t *ptep, real_pte_t rpte,
- unsigned int subpg_index, unsigned long hidx)
+ unsigned int subpg_index, unsigned long hidx,
+ int offset)
{
return (hidx << H_PAGE_F_GIX_SHIFT) &
(H_PAGE_F_SECOND | H_PAGE_F_GIX);
diff --git a/arch/powerpc/include/asm/book3s/64/hash-64k.h b/arch/powerpc/include/asm/book3s/64/hash-64k.h
index 338b7da468ce..3bcf269f8f55 100644
--- a/arch/powerpc/include/asm/book3s/64/hash-64k.h
+++ b/arch/powerpc/include/asm/book3s/64/hash-64k.h
@@ -45,7 +45,7 @@
* generic accessors and iterators here
*/
#define __real_pte __real_pte
-static inline real_pte_t __real_pte(pte_t pte, pte_t *ptep)
+static inline real_pte_t __real_pte(pte_t pte, pte_t *ptep, int offset)
{
real_pte_t rpte;
unsigned long *hidxp;
@@ -59,7 +59,7 @@ static inline real_pte_t __real_pte(pte_t pte, pte_t *ptep)
*/
smp_rmb();
- hidxp = (unsigned long *)(ptep + PTRS_PER_PTE);
+ hidxp = (unsigned long *)(ptep + offset);
rpte.hidx = *hidxp;
return rpte;
}
@@ -86,9 +86,10 @@ static inline unsigned long __rpte_to_hidx(real_pte_t rpte, unsigned long index)
* expected to modify the PTE bits accordingly and commit the PTE to memory.
*/
static inline unsigned long pte_set_hidx(pte_t *ptep, real_pte_t rpte,
- unsigned int subpg_index, unsigned long hidx)
+ unsigned int subpg_index,
+ unsigned long hidx, int offset)
{
- unsigned long *hidxp = (unsigned long *)(ptep + PTRS_PER_PTE);
+ unsigned long *hidxp = (unsigned long *)(ptep + offset);
rpte.hidx &= ~HIDX_BITS(0xfUL, subpg_index);
*hidxp = rpte.hidx | HIDX_BITS(HIDX_SHIFT_BY_ONE(hidx), subpg_index);
@@ -140,13 +141,18 @@ static inline int hash__remap_4k_pfn(struct vm_area_struct *vma, unsigned long a
}
#define H_PTE_TABLE_SIZE PTE_FRAG_SIZE
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined (CONFIG_HUGETLB_PAGE)
#define H_PMD_TABLE_SIZE ((sizeof(pmd_t) << PMD_INDEX_SIZE) + \
(sizeof(unsigned long) << PMD_INDEX_SIZE))
#else
#define H_PMD_TABLE_SIZE (sizeof(pmd_t) << PMD_INDEX_SIZE)
#endif
+#ifdef CONFIG_HUGETLB_PAGE
+#define H_PUD_TABLE_SIZE ((sizeof(pud_t) << PUD_INDEX_SIZE) + \
+ (sizeof(unsigned long) << PUD_INDEX_SIZE))
+#else
#define H_PUD_TABLE_SIZE (sizeof(pud_t) << PUD_INDEX_SIZE)
+#endif
#define H_PGD_TABLE_SIZE (sizeof(pgd_t) << PGD_INDEX_SIZE)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
diff --git a/arch/powerpc/include/asm/book3s/64/hash.h b/arch/powerpc/include/asm/book3s/64/hash.h
index 0920eff731b3..935adcd92a81 100644
--- a/arch/powerpc/include/asm/book3s/64/hash.h
+++ b/arch/powerpc/include/asm/book3s/64/hash.h
@@ -23,7 +23,8 @@
H_PUD_INDEX_SIZE + H_PGD_INDEX_SIZE + PAGE_SHIFT)
#define H_PGTABLE_RANGE (ASM_CONST(1) << H_PGTABLE_EADDR_SIZE)
-#if defined(CONFIG_TRANSPARENT_HUGEPAGE) && defined(CONFIG_PPC_64K_PAGES)
+#if (defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLB_PAGE)) && \
+ defined(CONFIG_PPC_64K_PAGES)
/*
* only with hash 64k we need to use the second half of pmd page table
* to store pointer to deposited pgtable_t
@@ -33,6 +34,16 @@
#define H_PMD_CACHE_INDEX H_PMD_INDEX_SIZE
#endif
/*
+ * We store the slot details in the second half of page table.
+ * Increase the pud level table so that hugetlb ptes can be stored
+ * at pud level.
+ */
+#if defined(CONFIG_HUGETLB_PAGE) && defined(CONFIG_PPC_64K_PAGES)
+#define H_PUD_CACHE_INDEX (H_PUD_INDEX_SIZE + 1)
+#else
+#define H_PUD_CACHE_INDEX (H_PUD_INDEX_SIZE)
+#endif
+/*
* Define the address range of the kernel non-linear virtual area
*/
#define H_KERN_VIRT_START ASM_CONST(0xD000000000000000)
diff --git a/arch/powerpc/include/asm/book3s/64/pgalloc.h b/arch/powerpc/include/asm/book3s/64/pgalloc.h
index 1fcfa425cefa..4746bc68d446 100644
--- a/arch/powerpc/include/asm/book3s/64/pgalloc.h
+++ b/arch/powerpc/include/asm/book3s/64/pgalloc.h
@@ -73,10 +73,16 @@ static inline void radix__pgd_free(struct mm_struct *mm, pgd_t *pgd)
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
+ pgd_t *pgd;
+
if (radix_enabled())
return radix__pgd_alloc(mm);
- return kmem_cache_alloc(PGT_CACHE(PGD_INDEX_SIZE),
- pgtable_gfp_flags(mm, GFP_KERNEL));
+
+ pgd = kmem_cache_alloc(PGT_CACHE(PGD_INDEX_SIZE),
+ pgtable_gfp_flags(mm, GFP_KERNEL));
+ memset(pgd, 0, PGD_TABLE_SIZE);
+
+ return pgd;
}
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
@@ -93,13 +99,13 @@ static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
{
- return kmem_cache_alloc(PGT_CACHE(PUD_INDEX_SIZE),
+ return kmem_cache_alloc(PGT_CACHE(PUD_CACHE_INDEX),
pgtable_gfp_flags(mm, GFP_KERNEL));
}
static inline void pud_free(struct mm_struct *mm, pud_t *pud)
{
- kmem_cache_free(PGT_CACHE(PUD_INDEX_SIZE), pud);
+ kmem_cache_free(PGT_CACHE(PUD_CACHE_INDEX), pud);
}
static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
@@ -115,7 +121,7 @@ static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud,
* ahead and flush the page walk cache
*/
flush_tlb_pgtable(tlb, address);
- pgtable_free_tlb(tlb, pud, PUD_INDEX_SIZE);
+ pgtable_free_tlb(tlb, pud, PUD_CACHE_INDEX);
}
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 51017726d495..a6b9f1d74600 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -232,11 +232,13 @@ extern unsigned long __pmd_index_size;
extern unsigned long __pud_index_size;
extern unsigned long __pgd_index_size;
extern unsigned long __pmd_cache_index;
+extern unsigned long __pud_cache_index;
#define PTE_INDEX_SIZE __pte_index_size
#define PMD_INDEX_SIZE __pmd_index_size
#define PUD_INDEX_SIZE __pud_index_size
#define PGD_INDEX_SIZE __pgd_index_size
#define PMD_CACHE_INDEX __pmd_cache_index
+#define PUD_CACHE_INDEX __pud_cache_index
/*
* Because of use of pte fragments and THP, size of page table
* are not always derived out of index size above.
@@ -348,7 +350,7 @@ extern unsigned long pci_io_base;
*/
#ifndef __real_pte
-#define __real_pte(e,p) ((real_pte_t){(e)})
+#define __real_pte(e, p, o) ((real_pte_t){(e)})
#define __rpte_to_pte(r) ((r).pte)
#define __rpte_to_hidx(r,index) (pte_val(__rpte_to_pte(r)) >> H_PAGE_F_GIX_SHIFT)
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h
index 176dfb73d42c..471b2274fbeb 100644
--- a/arch/powerpc/include/asm/exception-64s.h
+++ b/arch/powerpc/include/asm/exception-64s.h
@@ -645,7 +645,7 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
EXC_HV, SOFTEN_TEST_HV, bitmask)
#define MASKABLE_RELON_EXCEPTION_HV_OOL(vec, label, bitmask) \
- MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_NOTEST_HV, vec, bitmask);\
+ MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_HV, vec, bitmask);\
EXCEPTION_RELON_PROLOG_PSERIES_1(label, EXC_HV)
/*
diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h
index 88e5e8f17e98..855e17d158b1 100644
--- a/arch/powerpc/include/asm/hw_irq.h
+++ b/arch/powerpc/include/asm/hw_irq.h
@@ -30,6 +30,16 @@
#define PACA_IRQ_PMI 0x40
/*
+ * Some soft-masked interrupts must be hard masked until they are replayed
+ * (e.g., because the soft-masked handler does not clear the exception).
+ */
+#ifdef CONFIG_PPC_BOOK3S
+#define PACA_IRQ_MUST_HARD_MASK (PACA_IRQ_EE|PACA_IRQ_PMI)
+#else
+#define PACA_IRQ_MUST_HARD_MASK (PACA_IRQ_EE)
+#endif
+
+/*
* flags for paca->irq_soft_mask
*/
#define IRQS_ENABLED 0
@@ -244,7 +254,7 @@ static inline bool lazy_irq_pending(void)
static inline void may_hard_irq_enable(void)
{
get_paca()->irq_happened &= ~PACA_IRQ_HARD_DIS;
- if (!(get_paca()->irq_happened & PACA_IRQ_EE))
+ if (!(get_paca()->irq_happened & PACA_IRQ_MUST_HARD_MASK))
__hard_irq_enable();
}
diff --git a/arch/powerpc/include/asm/kexec.h b/arch/powerpc/include/asm/kexec.h
index 9dcbfa6bbb91..d8b1e8e7e035 100644
--- a/arch/powerpc/include/asm/kexec.h
+++ b/arch/powerpc/include/asm/kexec.h
@@ -140,6 +140,12 @@ static inline bool kdump_in_progress(void)
return false;
}
+static inline void crash_ipi_callback(struct pt_regs *regs) { }
+
+static inline void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *))
+{
+}
+
#endif /* CONFIG_KEXEC_CORE */
#endif /* ! __ASSEMBLY__ */
#endif /* __KERNEL__ */
diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h b/arch/powerpc/include/asm/nohash/32/pgtable.h
index 504a3c36ce5c..03bbd1149530 100644
--- a/arch/powerpc/include/asm/nohash/32/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/32/pgtable.h
@@ -24,6 +24,7 @@ extern int icache_44x_need_flush;
#define PGD_INDEX_SIZE (32 - PGDIR_SHIFT)
#define PMD_CACHE_INDEX PMD_INDEX_SIZE
+#define PUD_CACHE_INDEX PUD_INDEX_SIZE
#ifndef __ASSEMBLY__
#define PTE_TABLE_SIZE (sizeof(pte_t) << PTE_INDEX_SIZE)
diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h
index abddf5830ad5..5c5f75d005ad 100644
--- a/arch/powerpc/include/asm/nohash/64/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/64/pgtable.h
@@ -27,6 +27,7 @@
#else
#define PMD_CACHE_INDEX PMD_INDEX_SIZE
#endif
+#define PUD_CACHE_INDEX PUD_INDEX_SIZE
/*
* Define the address range of the kernel non-linear virtual area
diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h
index 88187c285c70..593248110902 100644
--- a/arch/powerpc/include/asm/topology.h
+++ b/arch/powerpc/include/asm/topology.h
@@ -44,6 +44,11 @@ extern int sysfs_add_device_to_node(struct device *dev, int nid);
extern void sysfs_remove_device_from_node(struct device *dev, int nid);
extern int numa_update_cpu_topology(bool cpus_locked);
+static inline void update_numa_cpu_lookup_table(unsigned int cpu, int node)
+{
+ numa_cpu_lookup_table[cpu] = node;
+}
+
static inline int early_cpu_to_node(int cpu)
{
int nid;
@@ -82,6 +87,7 @@ static inline int numa_update_cpu_topology(bool cpus_locked)
extern int start_topology_update(void);
extern int stop_topology_update(void);
extern int prrn_is_enabled(void);
+extern int find_and_online_cpu_nid(int cpu);
#else
static inline int start_topology_update(void)
{
@@ -95,6 +101,10 @@ static inline int prrn_is_enabled(void)
{
return 0;
}
+static inline int find_and_online_cpu_nid(int cpu)
+{
+ return 0;
+}
#endif /* CONFIG_NUMA && CONFIG_PPC_SPLPAR */
#if defined(CONFIG_HOTPLUG_CPU) || defined(CONFIG_NEED_MULTIPLE_NODES)
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index ee832d344a5a..9b6e653e501a 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -943,6 +943,8 @@ kernel_dbg_exc:
/*
* An interrupt came in while soft-disabled; We mark paca->irq_happened
* accordingly and if the interrupt is level sensitive, we hard disable
+ * hard disable (full_mask) corresponds to PACA_IRQ_MUST_HARD_MASK, so
+ * keep these in synch.
*/
.macro masked_interrupt_book3e paca_irq full_mask
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 243d072a225a..3ac87e53b3da 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -1426,7 +1426,7 @@ EXC_COMMON_BEGIN(soft_nmi_common)
* triggered and won't automatically refire.
* - If it was a HMI we return immediately since we handled it in realmode
* and it won't refire.
- * - else we hard disable and return.
+ * - Else it is one of PACA_IRQ_MUST_HARD_MASK, so hard disable and return.
* This is called with r10 containing the value to OR to the paca field.
*/
#define MASKED_INTERRUPT(_H) \
@@ -1441,8 +1441,8 @@ masked_##_H##interrupt: \
ori r10,r10,0xffff; \
mtspr SPRN_DEC,r10; \
b MASKED_DEC_HANDLER_LABEL; \
-1: andi. r10,r10,(PACA_IRQ_DBELL|PACA_IRQ_HMI); \
- bne 2f; \
+1: andi. r10,r10,PACA_IRQ_MUST_HARD_MASK; \
+ beq 2f; \
mfspr r10,SPRN_##_H##SRR1; \
xori r10,r10,MSR_EE; /* clear MSR_EE */ \
mtspr SPRN_##_H##SRR1,r10; \
diff --git a/arch/powerpc/mm/hash64_4k.c b/arch/powerpc/mm/hash64_4k.c
index 5a69b51d08a3..d573d7d07f25 100644
--- a/arch/powerpc/mm/hash64_4k.c
+++ b/arch/powerpc/mm/hash64_4k.c
@@ -55,7 +55,7 @@ int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid,
* need to add in 0x1 if it's a read-only user page
*/
rflags = htab_convert_pte_flags(new_pte);
- rpte = __real_pte(__pte(old_pte), ptep);
+ rpte = __real_pte(__pte(old_pte), ptep, PTRS_PER_PTE);
if (cpu_has_feature(CPU_FTR_NOEXECUTE) &&
!cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
@@ -117,7 +117,7 @@ repeat:
return -1;
}
new_pte = (new_pte & ~_PAGE_HPTEFLAGS) | H_PAGE_HASHPTE;
- new_pte |= pte_set_hidx(ptep, rpte, 0, slot);
+ new_pte |= pte_set_hidx(ptep, rpte, 0, slot, PTRS_PER_PTE);
}
*ptep = __pte(new_pte & ~H_PAGE_BUSY);
return 0;
diff --git a/arch/powerpc/mm/hash64_64k.c b/arch/powerpc/mm/hash64_64k.c
index 2253bbc6a599..e601d95c3b20 100644
--- a/arch/powerpc/mm/hash64_64k.c
+++ b/arch/powerpc/mm/hash64_64k.c
@@ -86,7 +86,7 @@ int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid,
subpg_index = (ea & (PAGE_SIZE - 1)) >> shift;
vpn = hpt_vpn(ea, vsid, ssize);
- rpte = __real_pte(__pte(old_pte), ptep);
+ rpte = __real_pte(__pte(old_pte), ptep, PTRS_PER_PTE);
/*
*None of the sub 4k page is hashed
*/
@@ -214,7 +214,7 @@ repeat:
return -1;
}
- new_pte |= pte_set_hidx(ptep, rpte, subpg_index, slot);
+ new_pte |= pte_set_hidx(ptep, rpte, subpg_index, slot, PTRS_PER_PTE);
new_pte |= H_PAGE_HASHPTE;
*ptep = __pte(new_pte & ~H_PAGE_BUSY);
@@ -262,7 +262,7 @@ int __hash_page_64K(unsigned long ea, unsigned long access,
} while (!pte_xchg(ptep, __pte(old_pte), __pte(new_pte)));
rflags = htab_convert_pte_flags(new_pte);
- rpte = __real_pte(__pte(old_pte), ptep);
+ rpte = __real_pte(__pte(old_pte), ptep, PTRS_PER_PTE);
if (cpu_has_feature(CPU_FTR_NOEXECUTE) &&
!cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
@@ -327,7 +327,7 @@ repeat:
}
new_pte = (new_pte & ~_PAGE_HPTEFLAGS) | H_PAGE_HASHPTE;
- new_pte |= pte_set_hidx(ptep, rpte, 0, slot);
+ new_pte |= pte_set_hidx(ptep, rpte, 0, slot, PTRS_PER_PTE);
}
*ptep = __pte(new_pte & ~H_PAGE_BUSY);
return 0;
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 7d07c7e17db6..cf290d415dcd 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -1008,6 +1008,7 @@ void __init hash__early_init_mmu(void)
__pmd_index_size = H_PMD_INDEX_SIZE;
__pud_index_size = H_PUD_INDEX_SIZE;
__pgd_index_size = H_PGD_INDEX_SIZE;
+ __pud_cache_index = H_PUD_CACHE_INDEX;
__pmd_cache_index = H_PMD_CACHE_INDEX;
__pte_table_size = H_PTE_TABLE_SIZE;
__pmd_table_size = H_PMD_TABLE_SIZE;
diff --git a/arch/powerpc/mm/hugetlbpage-hash64.c b/arch/powerpc/mm/hugetlbpage-hash64.c
index 12511f5a015f..b320f5097a06 100644
--- a/arch/powerpc/mm/hugetlbpage-hash64.c
+++ b/arch/powerpc/mm/hugetlbpage-hash64.c
@@ -27,7 +27,7 @@ int __hash_page_huge(unsigned long ea, unsigned long access, unsigned long vsid,
unsigned long vpn;
unsigned long old_pte, new_pte;
unsigned long rflags, pa, sz;
- long slot;
+ long slot, offset;
BUG_ON(shift != mmu_psize_defs[mmu_psize].shift);
@@ -63,7 +63,11 @@ int __hash_page_huge(unsigned long ea, unsigned long access, unsigned long vsid,
} while(!pte_xchg(ptep, __pte(old_pte), __pte(new_pte)));
rflags = htab_convert_pte_flags(new_pte);
- rpte = __real_pte(__pte(old_pte), ptep);
+ if (unlikely(mmu_psize == MMU_PAGE_16G))
+ offset = PTRS_PER_PUD;
+ else
+ offset = PTRS_PER_PMD;
+ rpte = __real_pte(__pte(old_pte), ptep, offset);
sz = ((1UL) << shift);
if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
@@ -104,7 +108,7 @@ int __hash_page_huge(unsigned long ea, unsigned long access, unsigned long vsid,
return -1;
}
- new_pte |= pte_set_hidx(ptep, rpte, 0, slot);
+ new_pte |= pte_set_hidx(ptep, rpte, 0, slot, offset);
}
/*
diff --git a/arch/powerpc/mm/init-common.c b/arch/powerpc/mm/init-common.c
index eb8c6c8c4851..2b656e67f2ea 100644
--- a/arch/powerpc/mm/init-common.c
+++ b/arch/powerpc/mm/init-common.c
@@ -100,6 +100,6 @@ void pgtable_cache_init(void)
* same size as either the pgd or pmd index except with THP enabled
* on book3s 64
*/
- if (PUD_INDEX_SIZE && !PGT_CACHE(PUD_INDEX_SIZE))
- pgtable_cache_add(PUD_INDEX_SIZE, pud_ctor);
+ if (PUD_CACHE_INDEX && !PGT_CACHE(PUD_CACHE_INDEX))
+ pgtable_cache_add(PUD_CACHE_INDEX, pud_ctor);
}
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 314d19ab9385..edd8d0bc9364 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -143,11 +143,6 @@ static void reset_numa_cpu_lookup_table(void)
numa_cpu_lookup_table[cpu] = -1;
}
-static void update_numa_cpu_lookup_table(unsigned int cpu, int node)
-{
- numa_cpu_lookup_table[cpu] = node;
-}
-
static void map_cpu_to_node(int cpu, int node)
{
update_numa_cpu_lookup_table(cpu, node);
diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c
index 573a9a2ee455..2e10a964e290 100644
--- a/arch/powerpc/mm/pgtable-radix.c
+++ b/arch/powerpc/mm/pgtable-radix.c
@@ -17,9 +17,11 @@
#include <linux/of_fdt.h>
#include <linux/mm.h>
#include <linux/string_helpers.h>
+#include <linux/stop_machine.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
+#include <asm/mmu_context.h>
#include <asm/dma.h>
#include <asm/machdep.h>
#include <asm/mmu.h>
@@ -333,6 +335,22 @@ static void __init radix_init_pgtable(void)
"r" (TLBIEL_INVAL_SET_LPID), "r" (0));
asm volatile("eieio; tlbsync; ptesync" : : : "memory");
trace_tlbie(0, 0, TLBIEL_INVAL_SET_LPID, 0, 2, 1, 1);
+
+ /*
+ * The init_mm context is given the first available (non-zero) PID,
+ * which is the "guard PID" and contains no page table. PIDR should
+ * never be set to zero because that duplicates the kernel address
+ * space at the 0x0... offset (quadrant 0)!
+ *
+ * An arbitrary PID that may later be allocated by the PID allocator
+ * for userspace processes must not be used either, because that
+ * would cause stale user mappings for that PID on CPUs outside of
+ * the TLB invalidation scheme (because it won't be in mm_cpumask).
+ *
+ * So permanently carve out one PID for the purpose of a guard PID.
+ */
+ init_mm.context.id = mmu_base_pid;
+ mmu_base_pid++;
}
static void __init radix_init_partition_table(void)
@@ -535,6 +553,7 @@ void __init radix__early_init_mmu(void)
__pmd_index_size = RADIX_PMD_INDEX_SIZE;
__pud_index_size = RADIX_PUD_INDEX_SIZE;
__pgd_index_size = RADIX_PGD_INDEX_SIZE;
+ __pud_cache_index = RADIX_PUD_INDEX_SIZE;
__pmd_cache_index = RADIX_PMD_INDEX_SIZE;
__pte_table_size = RADIX_PTE_TABLE_SIZE;
__pmd_table_size = RADIX_PMD_TABLE_SIZE;
@@ -579,7 +598,8 @@ void __init radix__early_init_mmu(void)
radix_init_iamr();
radix_init_pgtable();
-
+ /* Switch to the guard PID before turning on MMU */
+ radix__switch_mmu_context(NULL, &init_mm);
if (cpu_has_feature(CPU_FTR_HVMODE))
tlbiel_all();
}
@@ -604,6 +624,7 @@ void radix__early_init_mmu_secondary(void)
}
radix_init_iamr();
+ radix__switch_mmu_context(NULL, &init_mm);
if (cpu_has_feature(CPU_FTR_HVMODE))
tlbiel_all();
}
@@ -666,6 +687,30 @@ static void free_pmd_table(pmd_t *pmd_start, pud_t *pud)
pud_clear(pud);
}
+struct change_mapping_params {
+ pte_t *pte;
+ unsigned long start;
+ unsigned long end;
+ unsigned long aligned_start;
+ unsigned long aligned_end;
+};
+
+static int stop_machine_change_mapping(void *data)
+{
+ struct change_mapping_params *params =
+ (struct change_mapping_params *)data;
+
+ if (!data)
+ return -1;
+
+ spin_unlock(&init_mm.page_table_lock);
+ pte_clear(&init_mm, params->aligned_start, params->pte);
+ create_physical_mapping(params->aligned_start, params->start);
+ create_physical_mapping(params->end, params->aligned_end);
+ spin_lock(&init_mm.page_table_lock);
+ return 0;
+}
+
static void remove_pte_table(pte_t *pte_start, unsigned long addr,
unsigned long end)
{
@@ -694,6 +739,52 @@ static void remove_pte_table(pte_t *pte_start, unsigned long addr,
}
}
+/*
+ * clear the pte and potentially split the mapping helper
+ */
+static void split_kernel_mapping(unsigned long addr, unsigned long end,
+ unsigned long size, pte_t *pte)
+{
+ unsigned long mask = ~(size - 1);
+ unsigned long aligned_start = addr & mask;
+ unsigned long aligned_end = addr + size;
+ struct change_mapping_params params;
+ bool split_region = false;
+
+ if ((end - addr) < size) {
+ /*
+ * We're going to clear the PTE, but not flushed
+ * the mapping, time to remap and flush. The
+ * effects if visible outside the processor or
+ * if we are running in code close to the
+ * mapping we cleared, we are in trouble.
+ */
+ if (overlaps_kernel_text(aligned_start, addr) ||
+ overlaps_kernel_text(end, aligned_end)) {
+ /*
+ * Hack, just return, don't pte_clear
+ */
+ WARN_ONCE(1, "Linear mapping %lx->%lx overlaps kernel "
+ "text, not splitting\n", addr, end);
+ return;
+ }
+ split_region = true;
+ }
+
+ if (split_region) {
+ params.pte = pte;
+ params.start = addr;
+ params.end = end;
+ params.aligned_start = addr & ~(size - 1);
+ params.aligned_end = min_t(unsigned long, aligned_end,
+ (unsigned long)__va(memblock_end_of_DRAM()));
+ stop_machine(stop_machine_change_mapping, &params, NULL);
+ return;
+ }
+
+ pte_clear(&init_mm, addr, pte);
+}
+
static void remove_pmd_table(pmd_t *pmd_start, unsigned long addr,
unsigned long end)
{
@@ -709,13 +800,7 @@ static void remove_pmd_table(pmd_t *pmd_start, unsigned long addr,
continue;
if (pmd_huge(*pmd)) {
- if (!IS_ALIGNED(addr, PMD_SIZE) ||
- !IS_ALIGNED(next, PMD_SIZE)) {
- WARN_ONCE(1, "%s: unaligned range\n", __func__);
- continue;
- }
-
- pte_clear(&init_mm, addr, (pte_t *)pmd);
+ split_kernel_mapping(addr, end, PMD_SIZE, (pte_t *)pmd);
continue;
}
@@ -740,13 +825,7 @@ static void remove_pud_table(pud_t *pud_start, unsigned long addr,
continue;
if (pud_huge(*pud)) {
- if (!IS_ALIGNED(addr, PUD_SIZE) ||
- !IS_ALIGNED(next, PUD_SIZE)) {
- WARN_ONCE(1, "%s: unaligned range\n", __func__);
- continue;
- }
-
- pte_clear(&init_mm, addr, (pte_t *)pud);
+ split_kernel_mapping(addr, end, PUD_SIZE, (pte_t *)pud);
continue;
}
@@ -772,13 +851,7 @@ static void remove_pagetable(unsigned long start, unsigned long end)
continue;
if (pgd_huge(*pgd)) {
- if (!IS_ALIGNED(addr, PGDIR_SIZE) ||
- !IS_ALIGNED(next, PGDIR_SIZE)) {
- WARN_ONCE(1, "%s: unaligned range\n", __func__);
- continue;
- }
-
- pte_clear(&init_mm, addr, (pte_t *)pgd);
+ split_kernel_mapping(addr, end, PGDIR_SIZE, (pte_t *)pgd);
continue;
}
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index c9a623c2d8a2..28c980eb4422 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c
@@ -82,6 +82,8 @@ unsigned long __pgd_index_size;
EXPORT_SYMBOL(__pgd_index_size);
unsigned long __pmd_cache_index;
EXPORT_SYMBOL(__pmd_cache_index);
+unsigned long __pud_cache_index;
+EXPORT_SYMBOL(__pud_cache_index);
unsigned long __pte_table_size;
EXPORT_SYMBOL(__pte_table_size);
unsigned long __pmd_table_size;
@@ -471,6 +473,8 @@ void mmu_partition_table_set_entry(unsigned int lpid, unsigned long dw0,
if (old & PATB_HR) {
asm volatile(PPC_TLBIE_5(%0,%1,2,0,1) : :
"r" (TLBIEL_INVAL_SET_LPID), "r" (lpid));
+ asm volatile(PPC_TLBIE_5(%0,%1,2,1,1) : :
+ "r" (TLBIEL_INVAL_SET_LPID), "r" (lpid));
trace_tlbie(lpid, 0, TLBIEL_INVAL_SET_LPID, lpid, 2, 0, 1);
} else {
asm volatile(PPC_TLBIE_5(%0,%1,2,0,0) : :
diff --git a/arch/powerpc/mm/tlb_hash64.c b/arch/powerpc/mm/tlb_hash64.c
index 881ebd53ffc2..9b23f12e863c 100644
--- a/arch/powerpc/mm/tlb_hash64.c
+++ b/arch/powerpc/mm/tlb_hash64.c
@@ -51,7 +51,7 @@ void hpte_need_flush(struct mm_struct *mm, unsigned long addr,
unsigned int psize;
int ssize;
real_pte_t rpte;
- int i;
+ int i, offset;
i = batch->index;
@@ -67,6 +67,10 @@ void hpte_need_flush(struct mm_struct *mm, unsigned long addr,
psize = get_slice_psize(mm, addr);
/* Mask the address for the correct page size */
addr &= ~((1UL << mmu_psize_defs[psize].shift) - 1);
+ if (unlikely(psize == MMU_PAGE_16G))
+ offset = PTRS_PER_PUD;
+ else
+ offset = PTRS_PER_PMD;
#else
BUG();
psize = pte_pagesize_index(mm, addr, pte); /* shutup gcc */
@@ -78,6 +82,7 @@ void hpte_need_flush(struct mm_struct *mm, unsigned long addr,
* support 64k pages, this might be different from the
* hardware page size encoded in the slice table. */
addr &= PAGE_MASK;
+ offset = PTRS_PER_PTE;
}
@@ -91,7 +96,7 @@ void hpte_need_flush(struct mm_struct *mm, unsigned long addr,
}
WARN_ON(vsid == 0);
vpn = hpt_vpn(addr, vsid, ssize);
- rpte = __real_pte(__pte(pte), ptep);
+ rpte = __real_pte(__pte(pte), ptep, offset);
/*
* Check if we have an active batch on this CPU. If not, just
diff --git a/arch/powerpc/platforms/powernv/vas-window.c b/arch/powerpc/platforms/powernv/vas-window.c
index 2b3eb01ab110..b7c53a51c31b 100644
--- a/arch/powerpc/platforms/powernv/vas-window.c
+++ b/arch/powerpc/platforms/powernv/vas-window.c
@@ -1063,16 +1063,16 @@ struct vas_window *vas_tx_win_open(int vasid, enum vas_cop_type cop,
rc = PTR_ERR(txwin->paste_kaddr);
goto free_window;
}
+ } else {
+ /*
+ * A user mapping must ensure that context switch issues
+ * CP_ABORT for this thread.
+ */
+ rc = set_thread_uses_vas();
+ if (rc)
+ goto free_window;
}
- /*
- * Now that we have a send window, ensure context switch issues
- * CP_ABORT for this thread.
- */
- rc = -EINVAL;
- if (set_thread_uses_vas() < 0)
- goto free_window;
-
set_vinst_win(vinst, txwin);
return txwin;
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index dceb51454d8d..652d3e96b812 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -36,6 +36,7 @@
#include <asm/xics.h>
#include <asm/xive.h>
#include <asm/plpar_wrappers.h>
+#include <asm/topology.h>
#include "pseries.h"
#include "offline_states.h"
@@ -331,6 +332,7 @@ static void pseries_remove_processor(struct device_node *np)
BUG_ON(cpu_online(cpu));
set_cpu_present(cpu, false);
set_hard_smp_processor_id(cpu, -1);
+ update_numa_cpu_lookup_table(cpu, -1);
break;
}
if (cpu >= nr_cpu_ids)
@@ -340,8 +342,6 @@ static void pseries_remove_processor(struct device_node *np)
cpu_maps_update_done();
}
-extern int find_and_online_cpu_nid(int cpu);
-
static int dlpar_online_cpu(struct device_node *dn)
{
int rc = 0;
diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c
index 81d8614e7379..5e1ef9150182 100644
--- a/arch/powerpc/platforms/pseries/ras.c
+++ b/arch/powerpc/platforms/pseries/ras.c
@@ -49,6 +49,28 @@ static irqreturn_t ras_error_interrupt(int irq, void *dev_id);
/*
+ * Enable the hotplug interrupt late because processing them may touch other
+ * devices or systems (e.g. hugepages) that have not been initialized at the
+ * subsys stage.
+ */
+int __init init_ras_hotplug_IRQ(void)
+{
+ struct device_node *np;
+
+ /* Hotplug Events */
+ np = of_find_node_by_path("/event-sources/hot-plug-events");
+ if (np != NULL) {
+ if (dlpar_workqueue_init() == 0)
+ request_event_sources_irqs(np, ras_hotplug_interrupt,
+ "RAS_HOTPLUG");
+ of_node_put(np);
+ }
+
+ return 0;
+}
+machine_late_initcall(pseries, init_ras_hotplug_IRQ);
+
+/*
* Initialize handlers for the set of interrupts caused by hardware errors
* and power system events.
*/
@@ -66,15 +88,6 @@ static int __init init_ras_IRQ(void)
of_node_put(np);
}
- /* Hotplug Events */
- np = of_find_node_by_path("/event-sources/hot-plug-events");
- if (np != NULL) {
- if (dlpar_workqueue_init() == 0)
- request_event_sources_irqs(np, ras_hotplug_interrupt,
- "RAS_HOTPLUG");
- of_node_put(np);
- }
-
/* EPOW Events */
np = of_find_node_by_path("/event-sources/epow-events");
if (np != NULL) {
diff --git a/drivers/misc/ocxl/file.c b/drivers/misc/ocxl/file.c
index d9aa407db06a..2dd2db9bc1c9 100644
--- a/drivers/misc/ocxl/file.c
+++ b/drivers/misc/ocxl/file.c
@@ -277,7 +277,7 @@ static ssize_t afu_read(struct file *file, char __user *buf, size_t count,
struct ocxl_context *ctx = file->private_data;
struct ocxl_kernel_event_header header;
ssize_t rc;
- size_t used = 0;
+ ssize_t used = 0;
DEFINE_WAIT(event_wait);
memset(&header, 0, sizeof(header));
diff --git a/tools/testing/selftests/powerpc/alignment/alignment_handler.c b/tools/testing/selftests/powerpc/alignment/alignment_handler.c
index 39fd362415cf..0f2698f9fd6d 100644
--- a/tools/testing/selftests/powerpc/alignment/alignment_handler.c
+++ b/tools/testing/selftests/powerpc/alignment/alignment_handler.c
@@ -57,7 +57,7 @@ volatile int gotsig;
void sighandler(int sig, siginfo_t *info, void *ctx)
{
- struct ucontext *ucp = ctx;
+ ucontext_t *ucp = ctx;
if (!testing) {
signal(sig, SIG_DFL);