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-rw-r--r--arch/sparc/mm/fault_32.c21
-rw-r--r--arch/sparc/mm/fault_64.c17
-rw-r--r--arch/sparc/mm/highmem.c37
-rw-r--r--arch/sparc/mm/hugetlbpage.c1
-rw-r--r--arch/sparc/mm/hypersparc.S3
-rw-r--r--arch/sparc/mm/init_32.c2
-rw-r--r--arch/sparc/mm/init_64.c62
-rw-r--r--arch/sparc/mm/io-unit.c12
-rw-r--r--arch/sparc/mm/iommu.c10
-rw-r--r--arch/sparc/mm/srmmu.c133
-rw-r--r--arch/sparc/mm/tlb.c1
-rw-r--r--arch/sparc/mm/tsb.c2
-rw-r--r--arch/sparc/mm/ultra.S2
-rw-r--r--arch/sparc/mm/viking.S5
14 files changed, 102 insertions, 206 deletions
diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c
index f6e0e601f857..cfef656eda0f 100644
--- a/arch/sparc/mm/fault_32.c
+++ b/arch/sparc/mm/fault_32.c
@@ -25,7 +25,6 @@
#include <linux/uaccess.h>
#include <asm/page.h>
-#include <asm/pgtable.h>
#include <asm/openprom.h>
#include <asm/oplib.h>
#include <asm/setup.h>
@@ -196,7 +195,7 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
retry:
- down_read(&mm->mmap_sem);
+ mmap_read_lock(mm);
if (!from_user && address >= PAGE_OFFSET)
goto bad_area;
@@ -263,7 +262,7 @@ good_area:
if (fault & VM_FAULT_RETRY) {
flags |= FAULT_FLAG_TRIED;
- /* No need to up_read(&mm->mmap_sem) as we would
+ /* No need to mmap_read_unlock(mm) as we would
* have already released it in __lock_page_or_retry
* in mm/filemap.c.
*/
@@ -272,7 +271,7 @@ good_area:
}
}
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
return;
/*
@@ -280,7 +279,7 @@ good_area:
* Fix it, but check if it's kernel or user first..
*/
bad_area:
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
bad_area_nosemaphore:
/* User mode accesses just cause a SIGSEGV */
@@ -329,7 +328,7 @@ no_context:
* us unable to handle the page fault gracefully.
*/
out_of_memory:
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
if (from_user) {
pagefault_out_of_memory();
return;
@@ -337,7 +336,7 @@ out_of_memory:
goto no_context;
do_sigbus:
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
do_fault_siginfo(BUS_ADRERR, SIGBUS, regs, text_fault);
if (!from_user)
goto no_context;
@@ -391,7 +390,7 @@ static void force_user_fault(unsigned long address, int write)
code = SEGV_MAPERR;
- down_read(&mm->mmap_sem);
+ mmap_read_lock(mm);
vma = find_vma(mm, address);
if (!vma)
goto bad_area;
@@ -416,15 +415,15 @@ good_area:
case VM_FAULT_OOM:
goto do_sigbus;
}
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
return;
bad_area:
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
__do_fault_siginfo(code, SIGSEGV, tsk->thread.kregs, address);
return;
do_sigbus:
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
__do_fault_siginfo(BUS_ADRERR, SIGBUS, tsk->thread.kregs, address);
}
diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c
index c0c0dd471b6b..a3806614e4dc 100644
--- a/arch/sparc/mm/fault_64.c
+++ b/arch/sparc/mm/fault_64.c
@@ -27,7 +27,6 @@
#include <linux/uaccess.h>
#include <asm/page.h>
-#include <asm/pgtable.h>
#include <asm/openprom.h>
#include <asm/oplib.h>
#include <asm/asi.h>
@@ -71,7 +70,7 @@ static void __kprobes bad_kernel_pc(struct pt_regs *regs, unsigned long vaddr)
}
/*
- * We now make sure that mmap_sem is held in all paths that call
+ * We now make sure that mmap_lock is held in all paths that call
* this. Additionally, to prevent kswapd from ripping ptes from
* under us, raise interrupts around the time that we look at the
* pte, kswapd will have to wait to get his smp ipi response from
@@ -319,7 +318,7 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
- if (!down_read_trylock(&mm->mmap_sem)) {
+ if (!mmap_read_trylock(mm)) {
if ((regs->tstate & TSTATE_PRIV) &&
!search_exception_tables(regs->tpc)) {
insn = get_fault_insn(regs, insn);
@@ -327,7 +326,7 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
}
retry:
- down_read(&mm->mmap_sem);
+ mmap_read_lock(mm);
}
if (fault_code & FAULT_CODE_BAD_RA)
@@ -451,7 +450,7 @@ good_area:
if (fault & VM_FAULT_RETRY) {
flags |= FAULT_FLAG_TRIED;
- /* No need to up_read(&mm->mmap_sem) as we would
+ /* No need to mmap_read_unlock(mm) as we would
* have already released it in __lock_page_or_retry
* in mm/filemap.c.
*/
@@ -459,7 +458,7 @@ good_area:
goto retry;
}
}
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
mm_rss = get_mm_rss(mm);
#if defined(CONFIG_TRANSPARENT_HUGEPAGE)
@@ -490,7 +489,7 @@ exit_exception:
*/
bad_area:
insn = get_fault_insn(regs, insn);
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
handle_kernel_fault:
do_kernel_fault(regs, si_code, fault_code, insn, address);
@@ -502,7 +501,7 @@ handle_kernel_fault:
*/
out_of_memory:
insn = get_fault_insn(regs, insn);
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
if (!(regs->tstate & TSTATE_PRIV)) {
pagefault_out_of_memory();
goto exit_exception;
@@ -515,7 +514,7 @@ intr_or_no_mm:
do_sigbus:
insn = get_fault_insn(regs, insn);
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
/*
* Send a sigbus, regardless of whether we were in kernel
diff --git a/arch/sparc/mm/highmem.c b/arch/sparc/mm/highmem.c
index d4a80adea7e5..d1fc9a7b7d78 100644
--- a/arch/sparc/mm/highmem.c
+++ b/arch/sparc/mm/highmem.c
@@ -32,37 +32,21 @@
#include <asm/pgalloc.h>
#include <asm/vaddrs.h>
-pgprot_t kmap_prot;
-
static pte_t *kmap_pte;
void __init kmap_init(void)
{
- unsigned long address;
- p4d_t *p4d;
- pud_t *pud;
- pmd_t *dir;
-
- address = __fix_to_virt(FIX_KMAP_BEGIN);
- p4d = p4d_offset(pgd_offset_k(address), address);
- pud = pud_offset(p4d, address);
- dir = pmd_offset(pud, address);
+ unsigned long address = __fix_to_virt(FIX_KMAP_BEGIN);
/* cache the first kmap pte */
- kmap_pte = pte_offset_kernel(dir, address);
- kmap_prot = __pgprot(SRMMU_ET_PTE | SRMMU_PRIV | SRMMU_CACHE);
+ kmap_pte = virt_to_kpte(address);
}
-void *kmap_atomic(struct page *page)
+void *kmap_atomic_high_prot(struct page *page, pgprot_t prot)
{
unsigned long vaddr;
long idx, type;
- preempt_disable();
- pagefault_disable();
- if (!PageHighMem(page))
- return page_address(page);
-
type = kmap_atomic_idx_push();
idx = type + KM_TYPE_NR*smp_processor_id();
vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
@@ -77,7 +61,7 @@ void *kmap_atomic(struct page *page)
#ifdef CONFIG_DEBUG_HIGHMEM
BUG_ON(!pte_none(*(kmap_pte-idx)));
#endif
- set_pte(kmap_pte-idx, mk_pte(page, kmap_prot));
+ set_pte(kmap_pte-idx, mk_pte(page, prot));
/* XXX Fix - Anton */
#if 0
__flush_tlb_one(vaddr);
@@ -87,18 +71,15 @@ void *kmap_atomic(struct page *page)
return (void*) vaddr;
}
-EXPORT_SYMBOL(kmap_atomic);
+EXPORT_SYMBOL(kmap_atomic_high_prot);
-void __kunmap_atomic(void *kvaddr)
+void kunmap_atomic_high(void *kvaddr)
{
unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;
int type;
- if (vaddr < FIXADDR_START) { // FIXME
- pagefault_enable();
- preempt_enable();
+ if (vaddr < FIXADDR_START)
return;
- }
type = kmap_atomic_idx();
@@ -131,7 +112,5 @@ void __kunmap_atomic(void *kvaddr)
#endif
kmap_atomic_idx_pop();
- pagefault_enable();
- preempt_enable();
}
-EXPORT_SYMBOL(__kunmap_atomic);
+EXPORT_SYMBOL(kunmap_atomic_high);
diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c
index 7b9fa861b67c..ec423b5f17dd 100644
--- a/arch/sparc/mm/hugetlbpage.c
+++ b/arch/sparc/mm/hugetlbpage.c
@@ -14,7 +14,6 @@
#include <asm/mman.h>
#include <asm/pgalloc.h>
-#include <asm/pgtable.h>
#include <asm/tlb.h>
#include <asm/tlbflush.h>
#include <asm/cacheflush.h>
diff --git a/arch/sparc/mm/hypersparc.S b/arch/sparc/mm/hypersparc.S
index 66885a8dc50a..6c2521e85a42 100644
--- a/arch/sparc/mm/hypersparc.S
+++ b/arch/sparc/mm/hypersparc.S
@@ -10,6 +10,7 @@
#include <asm/asm-offsets.h>
#include <asm/asi.h>
#include <asm/page.h>
+#include <asm/pgtable.h>
#include <asm/pgtsrmmu.h>
#include <linux/init.h>
@@ -293,7 +294,7 @@ hypersparc_flush_tlb_range:
cmp %o3, -1
be hypersparc_flush_tlb_range_out
#endif
- sethi %hi(~((1 << SRMMU_PGDIR_SHIFT) - 1)), %o4
+ sethi %hi(~((1 << PGDIR_SHIFT) - 1)), %o4
sta %o3, [%g1] ASI_M_MMUREGS
and %o1, %o4, %o1
add %o1, 0x200, %o1
diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
index 906eda1158b4..eb2946b1df8a 100644
--- a/arch/sparc/mm/init_32.c
+++ b/arch/sparc/mm/init_32.c
@@ -29,7 +29,6 @@
#include <asm/sections.h>
#include <asm/page.h>
-#include <asm/pgtable.h>
#include <asm/vaddrs.h>
#include <asm/setup.h>
#include <asm/tlb.h>
@@ -193,6 +192,7 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
/* Reserve the kernel text/data/bss. */
size = (start_pfn << PAGE_SHIFT) - phys_base;
memblock_reserve(phys_base, size);
+ memblock_add(phys_base, size);
size = memblock_phys_mem_size() - memblock_reserved_size();
*pages_avail = (size >> PAGE_SHIFT) - high_pages;
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 1cf0d666dea3..02e6e5e0f106 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -31,7 +31,6 @@
#include <asm/head.h>
#include <asm/page.h>
#include <asm/pgalloc.h>
-#include <asm/pgtable.h>
#include <asm/oplib.h>
#include <asm/iommu.h>
#include <asm/io.h>
@@ -325,23 +324,12 @@ static void __update_mmu_tsb_insert(struct mm_struct *mm, unsigned long tsb_inde
}
#ifdef CONFIG_HUGETLB_PAGE
-static void __init add_huge_page_size(unsigned long size)
-{
- unsigned int order;
-
- if (size_to_hstate(size))
- return;
-
- order = ilog2(size) - PAGE_SHIFT;
- hugetlb_add_hstate(order);
-}
-
static int __init hugetlbpage_init(void)
{
- add_huge_page_size(1UL << HPAGE_64K_SHIFT);
- add_huge_page_size(1UL << HPAGE_SHIFT);
- add_huge_page_size(1UL << HPAGE_256MB_SHIFT);
- add_huge_page_size(1UL << HPAGE_2GB_SHIFT);
+ hugetlb_add_hstate(HPAGE_64K_SHIFT - PAGE_SHIFT);
+ hugetlb_add_hstate(HPAGE_SHIFT - PAGE_SHIFT);
+ hugetlb_add_hstate(HPAGE_256MB_SHIFT - PAGE_SHIFT);
+ hugetlb_add_hstate(HPAGE_2GB_SHIFT - PAGE_SHIFT);
return 0;
}
@@ -360,16 +348,11 @@ static void __init pud_huge_patch(void)
__asm__ __volatile__("flush %0" : : "r" (addr));
}
-static int __init setup_hugepagesz(char *string)
+bool __init arch_hugetlb_valid_size(unsigned long size)
{
- unsigned long long hugepage_size;
- unsigned int hugepage_shift;
+ unsigned int hugepage_shift = ilog2(size);
unsigned short hv_pgsz_idx;
unsigned int hv_pgsz_mask;
- int rc = 0;
-
- hugepage_size = memparse(string, &string);
- hugepage_shift = ilog2(hugepage_size);
switch (hugepage_shift) {
case HPAGE_16GB_SHIFT:
@@ -397,20 +380,11 @@ static int __init setup_hugepagesz(char *string)
hv_pgsz_mask = 0;
}
- if ((hv_pgsz_mask & cpu_pgsz_mask) == 0U) {
- hugetlb_bad_size();
- pr_err("hugepagesz=%llu not supported by MMU.\n",
- hugepage_size);
- goto out;
- }
-
- add_huge_page_size(hugepage_size);
- rc = 1;
+ if ((hv_pgsz_mask & cpu_pgsz_mask) == 0U)
+ return false;
-out:
- return rc;
+ return true;
}
-__setup("hugepagesz=", setup_hugepagesz);
#endif /* CONFIG_HUGETLB_PAGE */
void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep)
@@ -529,11 +503,7 @@ void __kprobes flush_icache_range(unsigned long start, unsigned long end)
if (kaddr >= PAGE_OFFSET)
paddr = kaddr & mask;
else {
- pgd_t *pgdp = pgd_offset_k(kaddr);
- p4d_t *p4dp = p4d_offset(pgdp, kaddr);
- pud_t *pudp = pud_offset(p4dp, kaddr);
- pmd_t *pmdp = pmd_offset(pudp, kaddr);
- pte_t *ptep = pte_offset_kernel(pmdp, kaddr);
+ pte_t *ptep = virt_to_kpte(kaddr);
paddr = pte_val(*ptep) & mask;
}
@@ -1674,29 +1644,29 @@ bool kern_addr_valid(unsigned long addr)
pgd = pgd_offset_k(addr);
if (pgd_none(*pgd))
- return 0;
+ return false;
p4d = p4d_offset(pgd, addr);
if (p4d_none(*p4d))
- return 0;
+ return false;
pud = pud_offset(p4d, addr);
if (pud_none(*pud))
- return 0;
+ return false;
if (pud_large(*pud))
return pfn_valid(pud_pfn(*pud));
pmd = pmd_offset(pud, addr);
if (pmd_none(*pmd))
- return 0;
+ return false;
if (pmd_large(*pmd))
return pfn_valid(pmd_pfn(*pmd));
pte = pte_offset_kernel(pmd, addr);
if (pte_none(*pte))
- return 0;
+ return false;
return pfn_valid(pte_pfn(*pte));
}
@@ -2488,7 +2458,7 @@ void __init paging_init(void)
max_zone_pfns[ZONE_NORMAL] = end_pfn;
- free_area_init_nodes(max_zone_pfns);
+ free_area_init(max_zone_pfns);
}
printk("Booting Linux...\n");
diff --git a/arch/sparc/mm/io-unit.c b/arch/sparc/mm/io-unit.c
index 289276b99b01..bfcc04bfce54 100644
--- a/arch/sparc/mm/io-unit.c
+++ b/arch/sparc/mm/io-unit.c
@@ -10,14 +10,12 @@
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
-#include <linux/highmem.h> /* pte_offset_map => kmap_atomic */
#include <linux/bitops.h>
#include <linux/dma-mapping.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <asm/pgalloc.h>
-#include <asm/pgtable.h>
#include <asm/io.h>
#include <asm/io-unit.h>
#include <asm/mxcc.h>
@@ -242,21 +240,15 @@ static void *iounit_alloc(struct device *dev, size_t len,
while(addr < end) {
page = va;
{
- pgd_t *pgdp;
- p4d_t *p4dp;
- pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
long i;
- pgdp = pgd_offset(&init_mm, addr);
- p4dp = p4d_offset(pgdp, addr);
- pudp = pud_offset(p4dp, addr);
- pmdp = pmd_offset(pudp, addr);
+ pmdp = pmd_off_k(addr);
ptep = pte_offset_map(pmdp, addr);
set_pte(ptep, mk_pte(virt_to_page(page), dvma_prot));
-
+
i = ((addr - IOUNIT_DMA_BASE) >> PAGE_SHIFT);
iopte = iounit->page_table + i;
diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c
index b00dde13681b..35b002eb312e 100644
--- a/arch/sparc/mm/iommu.c
+++ b/arch/sparc/mm/iommu.c
@@ -12,13 +12,11 @@
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/slab.h>
-#include <linux/highmem.h> /* pte_offset_map => kmap_atomic */
#include <linux/dma-mapping.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <asm/pgalloc.h>
-#include <asm/pgtable.h>
#include <asm/io.h>
#include <asm/mxcc.h>
#include <asm/mbus.h>
@@ -350,9 +348,6 @@ static void *sbus_iommu_alloc(struct device *dev, size_t len,
while(addr < end) {
page = va;
{
- pgd_t *pgdp;
- p4d_t *p4dp;
- pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
@@ -363,10 +358,7 @@ static void *sbus_iommu_alloc(struct device *dev, size_t len,
else
__flush_page_to_ram(page);
- pgdp = pgd_offset(&init_mm, addr);
- p4dp = p4d_offset(pgdp, addr);
- pudp = pud_offset(p4dp, addr);
- pmdp = pmd_offset(pudp, addr);
+ pmdp = pmd_off_k(addr);
ptep = pte_offset_map(pmdp, addr);
set_pte(ptep, mk_pte(virt_to_page(page), dvma_prot));
diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c
index b7c94de70cca..989da22ba8e9 100644
--- a/arch/sparc/mm/srmmu.c
+++ b/arch/sparc/mm/srmmu.c
@@ -136,26 +136,8 @@ static void msi_set_sync(void)
void pmd_set(pmd_t *pmdp, pte_t *ptep)
{
- unsigned long ptp; /* Physical address, shifted right by 4 */
- int i;
-
- ptp = __nocache_pa(ptep) >> 4;
- for (i = 0; i < PTRS_PER_PTE/SRMMU_REAL_PTRS_PER_PTE; i++) {
- set_pte((pte_t *)&pmdp->pmdv[i], __pte(SRMMU_ET_PTD | ptp));
- ptp += (SRMMU_REAL_PTRS_PER_PTE * sizeof(pte_t) >> 4);
- }
-}
-
-void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep)
-{
- unsigned long ptp; /* Physical address, shifted right by 4 */
- int i;
-
- ptp = page_to_pfn(ptep) << (PAGE_SHIFT-4); /* watch for overflow */
- for (i = 0; i < PTRS_PER_PTE/SRMMU_REAL_PTRS_PER_PTE; i++) {
- set_pte((pte_t *)&pmdp->pmdv[i], __pte(SRMMU_ET_PTD | ptp));
- ptp += (SRMMU_REAL_PTRS_PER_PTE * sizeof(pte_t) >> 4);
- }
+ unsigned long ptp = __nocache_pa(ptep) >> 4;
+ set_pte((pte_t *)&pmd_val(*pmdp), __pte(SRMMU_ET_PTD | ptp));
}
/* Find an entry in the third-level page table.. */
@@ -163,7 +145,7 @@ pte_t *pte_offset_kernel(pmd_t *dir, unsigned long address)
{
void *pte;
- pte = __nocache_va((dir->pmdv[0] & SRMMU_PTD_PMASK) << 4);
+ pte = __nocache_va((pmd_val(*dir) & SRMMU_PTD_PMASK) << 4);
return (pte_t *) pte +
((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1));
}
@@ -175,18 +157,18 @@ pte_t *pte_offset_kernel(pmd_t *dir, unsigned long address)
*/
static void *__srmmu_get_nocache(int size, int align)
{
- int offset;
+ int offset, minsz = 1 << SRMMU_NOCACHE_BITMAP_SHIFT;
unsigned long addr;
- if (size < SRMMU_NOCACHE_BITMAP_SHIFT) {
+ if (size < minsz) {
printk(KERN_ERR "Size 0x%x too small for nocache request\n",
size);
- size = SRMMU_NOCACHE_BITMAP_SHIFT;
+ size = minsz;
}
- if (size & (SRMMU_NOCACHE_BITMAP_SHIFT - 1)) {
- printk(KERN_ERR "Size 0x%x unaligned int nocache request\n",
+ if (size & (minsz - 1)) {
+ printk(KERN_ERR "Size 0x%x unaligned in nocache request\n",
size);
- size += SRMMU_NOCACHE_BITMAP_SHIFT - 1;
+ size += minsz - 1;
}
BUG_ON(align > SRMMU_NOCACHE_ALIGN_MAX);
@@ -331,9 +313,9 @@ static void __init srmmu_nocache_init(void)
while (vaddr < srmmu_nocache_end) {
pgd = pgd_offset_k(vaddr);
- p4d = p4d_offset(__nocache_fix(pgd), vaddr);
- pud = pud_offset(__nocache_fix(p4d), vaddr);
- pmd = pmd_offset(__nocache_fix(pgd), vaddr);
+ p4d = p4d_offset(pgd, vaddr);
+ pud = pud_offset(p4d, vaddr);
+ pmd = pmd_offset(__nocache_fix(pud), vaddr);
pte = pte_offset_kernel(__nocache_fix(pmd), vaddr);
pteval = ((paddr >> 4) | SRMMU_ET_PTE | SRMMU_PRIV);
@@ -376,31 +358,33 @@ pgd_t *get_pgd_fast(void)
*/
pgtable_t pte_alloc_one(struct mm_struct *mm)
{
- unsigned long pte;
+ pte_t *ptep;
struct page *page;
- if ((pte = (unsigned long)pte_alloc_one_kernel(mm)) == 0)
- return NULL;
- page = pfn_to_page(__nocache_pa(pte) >> PAGE_SHIFT);
- if (!pgtable_pte_page_ctor(page)) {
- __free_page(page);
+ if ((ptep = pte_alloc_one_kernel(mm)) == 0)
return NULL;
+ page = pfn_to_page(__nocache_pa((unsigned long)ptep) >> PAGE_SHIFT);
+ spin_lock(&mm->page_table_lock);
+ if (page_ref_inc_return(page) == 2 && !pgtable_pte_page_ctor(page)) {
+ page_ref_dec(page);
+ ptep = NULL;
}
- return page;
+ spin_unlock(&mm->page_table_lock);
+
+ return ptep;
}
-void pte_free(struct mm_struct *mm, pgtable_t pte)
+void pte_free(struct mm_struct *mm, pgtable_t ptep)
{
- unsigned long p;
+ struct page *page;
- pgtable_pte_page_dtor(pte);
- p = (unsigned long)page_address(pte); /* Cached address (for test) */
- if (p == 0)
- BUG();
- p = page_to_pfn(pte) << PAGE_SHIFT; /* Physical address */
+ page = pfn_to_page(__nocache_pa((unsigned long)ptep) >> PAGE_SHIFT);
+ spin_lock(&mm->page_table_lock);
+ if (page_ref_dec_return(page) == 1)
+ pgtable_pte_page_dtor(page);
+ spin_unlock(&mm->page_table_lock);
- /* free non cached virtual address*/
- srmmu_free_nocache(__nocache_va(p), PTE_SIZE);
+ srmmu_free_nocache(ptep, SRMMU_PTE_TABLE_SIZE);
}
/* context handling - a dynamically sized pool is used */
@@ -822,13 +806,13 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
what = 0;
addr = start - PAGE_SIZE;
- if (!(start & ~(SRMMU_REAL_PMD_MASK))) {
- if (srmmu_probe(addr + SRMMU_REAL_PMD_SIZE) == probed)
+ if (!(start & ~(PMD_MASK))) {
+ if (srmmu_probe(addr + PMD_SIZE) == probed)
what = 1;
}
- if (!(start & ~(SRMMU_PGDIR_MASK))) {
- if (srmmu_probe(addr + SRMMU_PGDIR_SIZE) == probed)
+ if (!(start & ~(PGDIR_MASK))) {
+ if (srmmu_probe(addr + PGDIR_SIZE) == probed)
what = 2;
}
@@ -837,7 +821,7 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
pudp = pud_offset(p4dp, start);
if (what == 2) {
*(pgd_t *)__nocache_fix(pgdp) = __pgd(probed);
- start += SRMMU_PGDIR_SIZE;
+ start += PGDIR_SIZE;
continue;
}
if (pud_none(*(pud_t *)__nocache_fix(pudp))) {
@@ -849,6 +833,11 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
pud_set(__nocache_fix(pudp), pmdp);
}
pmdp = pmd_offset(__nocache_fix(pgdp), start);
+ if (what == 1) {
+ *(pmd_t *)__nocache_fix(pmdp) = __pmd(probed);
+ start += PMD_SIZE;
+ continue;
+ }
if (srmmu_pmd_none(*(pmd_t *)__nocache_fix(pmdp))) {
ptep = __srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
if (ptep == NULL)
@@ -856,19 +845,6 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
memset(__nocache_fix(ptep), 0, PTE_SIZE);
pmd_set(__nocache_fix(pmdp), ptep);
}
- if (what == 1) {
- /* We bend the rule where all 16 PTPs in a pmd_t point
- * inside the same PTE page, and we leak a perfectly
- * good hardware PTE piece. Alternatives seem worse.
- */
- unsigned int x; /* Index of HW PMD in soft cluster */
- unsigned long *val;
- x = (start >> PMD_SHIFT) & 15;
- val = &pmdp->pmdv[x];
- *(unsigned long *)__nocache_fix(val) = probed;
- start += SRMMU_REAL_PMD_SIZE;
- continue;
- }
ptep = pte_offset_kernel(__nocache_fix(pmdp), start);
*(pte_t *)__nocache_fix(ptep) = __pte(probed);
start += PAGE_SIZE;
@@ -890,9 +866,9 @@ static void __init do_large_mapping(unsigned long vaddr, unsigned long phys_base
/* Map sp_bank entry SP_ENTRY, starting at virtual address VBASE. */
static unsigned long __init map_spbank(unsigned long vbase, int sp_entry)
{
- unsigned long pstart = (sp_banks[sp_entry].base_addr & SRMMU_PGDIR_MASK);
- unsigned long vstart = (vbase & SRMMU_PGDIR_MASK);
- unsigned long vend = SRMMU_PGDIR_ALIGN(vbase + sp_banks[sp_entry].num_bytes);
+ unsigned long pstart = (sp_banks[sp_entry].base_addr & PGDIR_MASK);
+ unsigned long vstart = (vbase & PGDIR_MASK);
+ unsigned long vend = PGDIR_ALIGN(vbase + sp_banks[sp_entry].num_bytes);
/* Map "low" memory only */
const unsigned long min_vaddr = PAGE_OFFSET;
const unsigned long max_vaddr = PAGE_OFFSET + SRMMU_MAXMEM;
@@ -905,7 +881,7 @@ static unsigned long __init map_spbank(unsigned long vbase, int sp_entry)
while (vstart < vend) {
do_large_mapping(vstart, pstart);
- vstart += SRMMU_PGDIR_SIZE; pstart += SRMMU_PGDIR_SIZE;
+ vstart += PGDIR_SIZE; pstart += PGDIR_SIZE;
}
return vstart;
}
@@ -1008,24 +984,13 @@ void __init srmmu_paging_init(void)
kmap_init();
{
- unsigned long zones_size[MAX_NR_ZONES];
- unsigned long zholes_size[MAX_NR_ZONES];
- unsigned long npages;
- int znum;
-
- for (znum = 0; znum < MAX_NR_ZONES; znum++)
- zones_size[znum] = zholes_size[znum] = 0;
-
- npages = max_low_pfn - pfn_base;
-
- zones_size[ZONE_DMA] = npages;
- zholes_size[ZONE_DMA] = npages - pages_avail;
+ unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0 };
- npages = highend_pfn - max_low_pfn;
- zones_size[ZONE_HIGHMEM] = npages;
- zholes_size[ZONE_HIGHMEM] = npages - calc_highpages();
+ max_zone_pfn[ZONE_DMA] = max_low_pfn;
+ max_zone_pfn[ZONE_NORMAL] = max_low_pfn;
+ max_zone_pfn[ZONE_HIGHMEM] = highend_pfn;
- free_area_init_node(0, zones_size, pfn_base, zholes_size);
+ free_area_init(max_zone_pfn);
}
}
diff --git a/arch/sparc/mm/tlb.c b/arch/sparc/mm/tlb.c
index 3d72d2deb13b..a32a16c18617 100644
--- a/arch/sparc/mm/tlb.c
+++ b/arch/sparc/mm/tlb.c
@@ -10,7 +10,6 @@
#include <linux/swap.h>
#include <linux/preempt.h>
-#include <asm/pgtable.h>
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#include <asm/cacheflush.h>
diff --git a/arch/sparc/mm/tsb.c b/arch/sparc/mm/tsb.c
index f5edc28aa3a5..0dce4b7ff73e 100644
--- a/arch/sparc/mm/tsb.c
+++ b/arch/sparc/mm/tsb.c
@@ -8,9 +8,9 @@
#include <linux/preempt.h>
#include <linux/slab.h>
#include <linux/mm_types.h>
+#include <linux/pgtable.h>
#include <asm/page.h>
-#include <asm/pgtable.h>
#include <asm/mmu_context.h>
#include <asm/setup.h>
#include <asm/tsb.h>
diff --git a/arch/sparc/mm/ultra.S b/arch/sparc/mm/ultra.S
index d220b6848746..70e658d107e0 100644
--- a/arch/sparc/mm/ultra.S
+++ b/arch/sparc/mm/ultra.S
@@ -5,8 +5,8 @@
* Copyright (C) 1997, 2000, 2008 David S. Miller (davem@davemloft.net)
*/
+#include <linux/pgtable.h>
#include <asm/asi.h>
-#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/spitfire.h>
#include <asm/mmu_context.h>
diff --git a/arch/sparc/mm/viking.S b/arch/sparc/mm/viking.S
index adaef6e7b8cf..48f062de7a7f 100644
--- a/arch/sparc/mm/viking.S
+++ b/arch/sparc/mm/viking.S
@@ -13,6 +13,7 @@
#include <asm/asi.h>
#include <asm/mxcc.h>
#include <asm/page.h>
+#include <asm/pgtable.h>
#include <asm/pgtsrmmu.h>
#include <asm/viking.h>
@@ -157,7 +158,7 @@ viking_flush_tlb_range:
cmp %o3, -1
be 2f
#endif
- sethi %hi(~((1 << SRMMU_PGDIR_SHIFT) - 1)), %o4
+ sethi %hi(~((1 << PGDIR_SHIFT) - 1)), %o4
sta %o3, [%g1] ASI_M_MMUREGS
and %o1, %o4, %o1
add %o1, 0x200, %o1
@@ -243,7 +244,7 @@ sun4dsmp_flush_tlb_range:
ld [%o0 + VMA_VM_MM], %o0
ld [%o0 + AOFF_mm_context], %o3
lda [%g1] ASI_M_MMUREGS, %g5
- sethi %hi(~((1 << SRMMU_PGDIR_SHIFT) - 1)), %o4
+ sethi %hi(~((1 << PGDIR_SHIFT) - 1)), %o4
sta %o3, [%g1] ASI_M_MMUREGS
and %o1, %o4, %o1
add %o1, 0x200, %o1
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-09 07:59:45 +0000