Update MIPS to use the 4-level pagetable code thereby getting rid of
the compacrapability headers.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/lib-32/dump_tlb.c b/arch/mips/lib-32/dump_tlb.c
index 019ac8f..f6d134f 100644
--- a/arch/mips/lib-32/dump_tlb.c
+++ b/arch/mips/lib-32/dump_tlb.c
@@ -139,6 +139,7 @@
void dump_list_process(struct task_struct *t, void *address)
{
pgd_t *page_dir, *pgd;
+ pud_t *pud;
pmd_t *pmd;
pte_t *pte, page;
unsigned long addr, val;
@@ -162,7 +163,10 @@
pgd = pgd_offset(t->mm, addr);
printk("pgd == %08x, ", (unsigned int) pgd);
- pmd = pmd_offset(pgd, addr);
+ pud = pud_offset(pgd, addr);
+ printk("pud == %08x, ", (unsigned int) pud);
+
+ pmd = pmd_offset(pud, addr);
printk("pmd == %08x, ", (unsigned int) pmd);
pte = pte_offset(pmd, addr);
@@ -195,13 +199,15 @@
unsigned int vtop(void *address)
{
pgd_t *pgd;
+ pud_t *pud;
pmd_t *pmd;
pte_t *pte;
unsigned int addr, paddr;
addr = (unsigned long) address;
pgd = pgd_offset(current->mm, addr);
- pmd = pmd_offset(pgd, addr);
+ pud = pud_offset(pgd, addr);
+ pmd = pmd_offset(pud, addr);
pte = pte_offset(pmd, addr);
paddr = (KSEG1 | (unsigned int) pte_val(*pte)) & PAGE_MASK;
paddr |= (addr & ~PAGE_MASK);
diff --git a/arch/mips/lib-32/r3k_dump_tlb.c b/arch/mips/lib-32/r3k_dump_tlb.c
index a878224..4f2cb74 100644
--- a/arch/mips/lib-32/r3k_dump_tlb.c
+++ b/arch/mips/lib-32/r3k_dump_tlb.c
@@ -105,6 +105,7 @@
void dump_list_process(struct task_struct *t, void *address)
{
pgd_t *page_dir, *pgd;
+ pud_t *pud;
pmd_t *pmd;
pte_t *pte, page;
unsigned int addr;
@@ -121,7 +122,10 @@
pgd = pgd_offset(t->mm, addr);
printk("pgd == %08x, ", (unsigned int) pgd);
- pmd = pmd_offset(pgd, addr);
+ pud = pud_offset(pgd, addr);
+ printk("pud == %08x, ", (unsigned int) pud);
+
+ pmd = pmd_offset(pud, addr);
printk("pmd == %08x, ", (unsigned int) pmd);
pte = pte_offset(pmd, addr);
@@ -149,13 +153,15 @@
unsigned int vtop(void *address)
{
pgd_t *pgd;
+ pud_t *pud;
pmd_t *pmd;
pte_t *pte;
unsigned int addr, paddr;
addr = (unsigned long) address;
pgd = pgd_offset(current->mm, addr);
- pmd = pmd_offset(pgd, addr);
+ pud = pud_offset(pgd, addr);
+ pmd = pmd_offset(pud, addr);
pte = pte_offset(pmd, addr);
paddr = (KSEG1 | (unsigned int) pte_val(*pte)) & PAGE_MASK;
paddr |= (addr & ~PAGE_MASK);
diff --git a/arch/mips/lib-64/dump_tlb.c b/arch/mips/lib-64/dump_tlb.c
index 42f88e0..11a5f01 100644
--- a/arch/mips/lib-64/dump_tlb.c
+++ b/arch/mips/lib-64/dump_tlb.c
@@ -140,6 +140,7 @@
void dump_list_process(struct task_struct *t, void *address)
{
pgd_t *page_dir, *pgd;
+ pud_t *pud;
pmd_t *pmd;
pte_t *pte, page;
unsigned long addr, val;
@@ -155,7 +156,10 @@
pgd = pgd_offset(t->mm, addr);
printk("pgd == %016lx\n", (unsigned long) pgd);
- pmd = pmd_offset(pgd, addr);
+ pud = pud_offset(pgd, addr);
+ printk("pud == %016lx\n", (unsigned long) pud);
+
+ pmd = pmd_offset(pud, addr);
printk("pmd == %016lx\n", (unsigned long) pmd);
pte = pte_offset(pmd, addr);
@@ -184,13 +188,15 @@
unsigned int vtop(void *address)
{
pgd_t *pgd;
+ pud_t *pud;
pmd_t *pmd;
pte_t *pte;
unsigned int addr, paddr;
addr = (unsigned long) address;
pgd = pgd_offset(current->mm, addr);
- pmd = pmd_offset(pgd, addr);
+ pud = pud_offset(pgd, addr);
+ pmd = pmd_offset(pud, addr);
pte = pte_offset(pmd, addr);
paddr = (CKSEG1 | (unsigned int) pte_val(*pte)) & PAGE_MASK;
paddr |= (addr & ~PAGE_MASK);
diff --git a/arch/mips/mm/c-r3k.c b/arch/mips/mm/c-r3k.c
index c659f99..03492a5 100644
--- a/arch/mips/mm/c-r3k.c
+++ b/arch/mips/mm/c-r3k.c
@@ -221,12 +221,14 @@
struct mm_struct *mm)
{
pgd_t *pgd;
+ pud_t *pud;
pmd_t *pmd;
pte_t *pte;
unsigned long physpage;
pgd = pgd_offset(mm, addr);
- pmd = pmd_offset(pgd, addr);
+ pud = pud_offset(pgd, addr);
+ pmd = pmd_offset(pud, addr);
pte = pte_offset(pmd, addr);
if ((physpage = pte_val(*pte)) & _PAGE_VALID)
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 8ffb9f8..b165b73 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -372,12 +372,14 @@
int exec = vma->vm_flags & VM_EXEC;
struct mm_struct *mm = vma->vm_mm;
pgd_t *pgdp;
+ pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
page &= PAGE_MASK;
pgdp = pgd_offset(mm, page);
- pmdp = pmd_offset(pgdp, page);
+ pudp = pud_offset(pgdp, page);
+ pmdp = pmd_offset(pudp, page);
ptep = pte_offset(pmdp, page);
/*
diff --git a/arch/mips/mm/c-tx39.c b/arch/mips/mm/c-tx39.c
index ff5afab..5054a0e 100644
--- a/arch/mips/mm/c-tx39.c
+++ b/arch/mips/mm/c-tx39.c
@@ -183,6 +183,7 @@
int exec = vma->vm_flags & VM_EXEC;
struct mm_struct *mm = vma->vm_mm;
pgd_t *pgdp;
+ pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
@@ -195,7 +196,8 @@
page &= PAGE_MASK;
pgdp = pgd_offset(mm, page);
- pmdp = pmd_offset(pgdp, page);
+ pudp = pud_offset(pgdp, page);
+ pmdp = pmd_offset(pudp, page);
ptep = pte_offset(pmdp, page);
/*
diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c
index ec8077c..345a4d6 100644
--- a/arch/mips/mm/fault.c
+++ b/arch/mips/mm/fault.c
@@ -212,6 +212,7 @@
*/
int offset = __pgd_offset(address);
pgd_t *pgd, *pgd_k;
+ pud_t *pud, *pud_k;
pmd_t *pmd, *pmd_k;
pte_t *pte_k;
@@ -222,8 +223,13 @@
goto no_context;
set_pgd(pgd, *pgd_k);
- pmd = pmd_offset(pgd, address);
- pmd_k = pmd_offset(pgd_k, address);
+ pud = pud_offset(pgd, address);
+ pud_k = pud_offset(pgd_k, address);
+ if (!pud_present(*pud_k))
+ goto no_context;
+
+ pmd = pmd_offset(pud, address);
+ pmd_k = pmd_offset(pud_k, address);
if (!pmd_present(*pmd_k))
goto no_context;
set_pmd(pmd, *pmd_k);
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 77cbcca..5e1967f 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -83,7 +83,7 @@
pgprot_t kmap_prot;
#define kmap_get_fixmap_pte(vaddr) \
- pte_offset_kernel(pmd_offset(pgd_offset_k(vaddr), (vaddr)), (vaddr))
+ pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr), (vaddr)), (vaddr)), (vaddr))
static void __init kmap_init(void)
{
@@ -101,26 +101,32 @@
pgd_t *pgd_base)
{
pgd_t *pgd;
+ pud_t *pud;
pmd_t *pmd;
pte_t *pte;
- int i, j;
+ int i, j, k;
unsigned long vaddr;
vaddr = start;
i = __pgd_offset(vaddr);
- j = __pmd_offset(vaddr);
+ j = __pud_offset(vaddr);
+ k = __pmd_offset(vaddr);
pgd = pgd_base + i;
for ( ; (i < PTRS_PER_PGD) && (vaddr != end); pgd++, i++) {
- pmd = (pmd_t *)pgd;
- for (; (j < PTRS_PER_PMD) && (vaddr != end); pmd++, j++) {
- if (pmd_none(*pmd)) {
- pte = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);
- set_pmd(pmd, __pmd(pte));
- if (pte != pte_offset_kernel(pmd, 0))
- BUG();
+ pud = (pud_t *)pgd;
+ for ( ; (j < PTRS_PER_PUD) && (vaddr != end); pud++, j++) {
+ pmd = (pmd_t *)pud;
+ for (; (k < PTRS_PER_PMD) && (vaddr != end); pmd++, k++) {
+ if (pmd_none(*pmd)) {
+ pte = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);
+ set_pmd(pmd, __pmd(pte));
+ if (pte != pte_offset_kernel(pmd, 0))
+ BUG();
+ }
+ vaddr += PMD_SIZE;
}
- vaddr += PMD_SIZE;
+ k = 0;
}
j = 0;
}
diff --git a/arch/mips/mm/ioremap.c b/arch/mips/mm/ioremap.c
index adf3522..d061073 100644
--- a/arch/mips/mm/ioremap.c
+++ b/arch/mips/mm/ioremap.c
@@ -79,9 +79,14 @@
BUG();
spin_lock(&init_mm.page_table_lock);
do {
+ pud_t *pud;
pmd_t *pmd;
- pmd = pmd_alloc(&init_mm, dir, address);
+
error = -ENOMEM;
+ pud = pud_alloc(&init_mm, dir, address);
+ if (!pud)
+ break;
+ pmd = pmd_alloc(&init_mm, pud, address);
if (!pmd)
break;
if (remap_area_pmd(pmd, address, end - address,
@@ -141,7 +146,7 @@
*/
if (IS_LOW512(phys_addr) && IS_LOW512(last_addr) &&
flags == _CACHE_UNCACHED)
- return (void *) KSEG1ADDR(phys_addr);
+ return (void *) CKSEG1ADDR(phys_addr);
/*
* Don't allow anybody to remap normal RAM that we're using..
@@ -180,7 +185,7 @@
return (void *) (offset + (char *)addr);
}
-#define IS_KSEG1(addr) (((unsigned long)(addr) & ~0x1fffffffUL) == KSEG1)
+#define IS_KSEG1(addr) (((unsigned long)(addr) & ~0x1fffffffUL) == CKSEG1)
void __iounmap(volatile void __iomem *addr)
{
@@ -190,10 +195,8 @@
return;
p = remove_vm_area((void *) (PAGE_MASK & (unsigned long __force) addr));
- if (!p) {
+ if (!p)
printk(KERN_ERR "iounmap: bad address %p\n", addr);
- return;
- }
kfree(p);
}
diff --git a/arch/mips/mm/pgtable-32.c b/arch/mips/mm/pgtable-32.c
index 7449261..4a3c491 100644
--- a/arch/mips/mm/pgtable-32.c
+++ b/arch/mips/mm/pgtable-32.c
@@ -35,6 +35,7 @@
#ifdef CONFIG_HIGHMEM
unsigned long vaddr;
pgd_t *pgd, *pgd_base;
+ pud_t *pud;
pmd_t *pmd;
pte_t *pte;
#endif
@@ -60,7 +61,8 @@
fixrange_init(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP, pgd_base);
pgd = swapper_pg_dir + __pgd_offset(vaddr);
- pmd = pmd_offset(pgd, vaddr);
+ pud = pud_offset(pgd, vaddr);
+ pmd = pmd_offset(pud, vaddr);
pte = pte_offset_kernel(pmd, vaddr);
pkmap_page_table = pte;
#endif
diff --git a/arch/mips/mm/tlb-andes.c b/arch/mips/mm/tlb-andes.c
index 167e08e..3f422a8 100644
--- a/arch/mips/mm/tlb-andes.c
+++ b/arch/mips/mm/tlb-andes.c
@@ -195,6 +195,7 @@
{
unsigned long flags;
pgd_t *pgdp;
+ pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
int idx, pid;
@@ -220,7 +221,8 @@
write_c0_entryhi(address | (pid));
pgdp = pgd_offset(vma->vm_mm, address);
tlb_probe();
- pmdp = pmd_offset(pgdp, address);
+ pudp = pud_offset(pgdp, address);
+ pmdp = pmd_offset(pudp, address);
idx = read_c0_index();
ptep = pte_offset_map(pmdp, address);
write_c0_entrylo0(pte_val(*ptep++) >> 6);
diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c
index 09249a7..0870220 100644
--- a/arch/mips/mm/tlb-r4k.c
+++ b/arch/mips/mm/tlb-r4k.c
@@ -227,6 +227,7 @@
{
unsigned long flags;
pgd_t *pgdp;
+ pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
int idx, pid;
@@ -246,7 +247,8 @@
mtc0_tlbw_hazard();
tlb_probe();
BARRIER;
- pmdp = pmd_offset(pgdp, address);
+ pudp = pud_offset(pgdp, address);
+ pmdp = pmd_offset(pudp, address);
idx = read_c0_index();
ptep = pte_offset_map(pmdp, address);
diff --git a/include/asm-mips/page.h b/include/asm-mips/page.h
index 652b6d6..ee25a77 100644
--- a/include/asm-mips/page.h
+++ b/include/asm-mips/page.h
@@ -87,22 +87,48 @@
typedef struct { unsigned long pte; } pte_t;
#define pte_val(x) ((x).pte)
#endif
+#define __pte(x) ((pte_t) { (x) } )
+
+/*
+ * For 3-level pagetables we defines these ourselves, for 2-level the
+ * definitions are supplied by <asm-generic/pgtable-nopmd.h>.
+ */
+#ifdef CONFIG_64BIT
typedef struct { unsigned long pmd; } pmd_t;
-typedef struct { unsigned long pgd; } pgd_t;
-typedef struct { unsigned long pgprot; } pgprot_t;
-
#define pmd_val(x) ((x).pmd)
-#define pgd_val(x) ((x).pgd)
-#define pgprot_val(x) ((x).pgprot)
-
-#define ptep_buddy(x) ((pte_t *)((unsigned long)(x) ^ sizeof(pte_t)))
-
-#define __pte(x) ((pte_t) { (x) } )
#define __pmd(x) ((pmd_t) { (x) } )
+
+#endif
+
+/*
+ * Right now we don't support 4-level pagetables, so all pud-related
+ * definitions come from <asm-generic/pgtable-nopud.h>.
+ */
+
+/*
+ * Finall the top of the hierarchy, the pgd
+ */
+typedef struct { unsigned long pgd; } pgd_t;
+#define pgd_val(x) ((x).pgd)
#define __pgd(x) ((pgd_t) { (x) } )
+
+/*
+ * Manipulate page protection bits
+ */
+typedef struct { unsigned long pgprot; } pgprot_t;
+#define pgprot_val(x) ((x).pgprot)
#define __pgprot(x) ((pgprot_t) { (x) } )
+/*
+ * On R4000-style MMUs where a TLB entry is mapping a adjacent even / odd
+ * pair of pages we only have a single global bit per pair of pages. When
+ * writing to the TLB make sure we always have the bit set for both pages
+ * or none. This macro is used to access the `buddy' of the pte we're just
+ * working on.
+ */
+#define ptep_buddy(x) ((pte_t *)((unsigned long)(x) ^ sizeof(pte_t)))
+
#endif /* !__ASSEMBLY__ */
/* to align the pointer to the (next) page boundary */
diff --git a/include/asm-mips/pgalloc.h b/include/asm-mips/pgalloc.h
index ce57288..fe1df57 100644
--- a/include/asm-mips/pgalloc.h
+++ b/include/asm-mips/pgalloc.h
@@ -26,10 +26,22 @@
}
/*
+ * Initialize a new pmd table with invalid pointers.
+ */
+extern void pmd_init(unsigned long page, unsigned long pagetable);
+
+#ifdef CONFIG_64BIT
+
+static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
+{
+ set_pud(pud, __pud((unsigned long)pmd));
+}
+#endif
+
+/*
* Initialize a new pgd / pmd table with invalid pointers.
*/
extern void pgd_init(unsigned long page);
-extern void pmd_init(unsigned long page, unsigned long pagetable);
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
@@ -86,21 +98,18 @@
#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
#ifdef CONFIG_32BIT
-#define pgd_populate(mm, pmd, pte) BUG()
/*
* allocating and freeing a pmd is trivial: the 1-entry pmd is
* inside the pgd, so has no extra memory associated with it.
*/
-#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
#define pmd_free(x) do { } while (0)
#define __pmd_free_tlb(tlb,x) do { } while (0)
+
#endif
#ifdef CONFIG_64BIT
-#define pgd_populate(mm, pgd, pmd) set_pgd(pgd, __pgd(pmd))
-
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
{
pmd_t *pmd;
diff --git a/include/asm-mips/pgtable-32.h b/include/asm-mips/pgtable-32.h
index 7fec93b..8d66303 100644
--- a/include/asm-mips/pgtable-32.h
+++ b/include/asm-mips/pgtable-32.h
@@ -17,6 +17,8 @@
#include <asm/cachectl.h>
#include <asm/fixmap.h>
+#include <asm-generic/pgtable-nopmd.h>
+
/*
* - add_wired_entry() add a fixed TLB entry, and move wired register
*/
@@ -42,35 +44,35 @@
*/
/* PMD_SHIFT determines the size of the area a second-level page table can map */
-#ifdef CONFIG_64BIT_PHYS_ADDR
-#define PMD_SHIFT 21
-#else
-#define PMD_SHIFT 22
-#endif
#define PMD_SIZE (1UL << PMD_SHIFT)
#define PMD_MASK (~(PMD_SIZE-1))
/* PGDIR_SHIFT determines what a third-level page table entry can map */
-#define PGDIR_SHIFT PMD_SHIFT
+#ifdef CONFIG_64BIT_PHYS_ADDR
+#define PGDIR_SHIFT 21
+#else
+#define PGDIR_SHIFT 22
+#endif
#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
#define PGDIR_MASK (~(PGDIR_SIZE-1))
/*
* Entries per page directory level: we use two-level, so
- * we don't really have any PMD directory physically.
+ * we don't really have any PUD/PMD directory physically.
*/
#ifdef CONFIG_64BIT_PHYS_ADDR
#define PGD_ORDER 1
-#define PMD_ORDER 0
+#define PUD_ORDER aieeee_attempt_to_allocate_pud
+#define PMD_ORDER 1
#define PTE_ORDER 0
#else
#define PGD_ORDER 0
-#define PMD_ORDER 0
+#define PUD_ORDER aieeee_attempt_to_allocate_pud
+#define PMD_ORDER 1
#define PTE_ORDER 0
#endif
#define PTRS_PER_PGD ((PAGE_SIZE << PGD_ORDER) / sizeof(pgd_t))
-#define PTRS_PER_PMD 1
#define PTRS_PER_PTE ((PAGE_SIZE << PTE_ORDER) / sizeof(pte_t))
#define USER_PTRS_PER_PGD (0x80000000UL/PGDIR_SIZE)
@@ -91,8 +93,6 @@
#define pte_ERROR(e) \
printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
#endif
-#define pmd_ERROR(e) \
- printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pmd_val(e))
#define pgd_ERROR(e) \
printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
@@ -120,16 +120,6 @@
pmd_val(*pmdp) = ((unsigned long) invalid_pte_table);
}
-/*
- * The "pgd_xxx()" functions here are trivial for a folded two-level
- * setup: the pgd is never bad, and a pmd always exists (as it's folded
- * into the pgd entry)
- */
-static inline int pgd_none(pgd_t pgd) { return 0; }
-static inline int pgd_bad(pgd_t pgd) { return 0; }
-static inline int pgd_present(pgd_t pgd) { return 1; }
-static inline void pgd_clear(pgd_t *pgdp) { }
-
#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32)
#define pte_page(x) pfn_to_page(pte_pfn(x))
#define pte_pfn(x) ((unsigned long)((x).pte_high >> 6))
@@ -166,12 +156,6 @@
/* to find an entry in a page-table-directory */
#define pgd_offset(mm,addr) ((mm)->pgd + pgd_index(addr))
-/* Find an entry in the second-level page table.. */
-static inline pmd_t *pmd_offset(pgd_t *dir, unsigned long address)
-{
- return (pmd_t *) dir;
-}
-
/* Find an entry in the third-level page table.. */
#define __pte_offset(address) \
(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
diff --git a/include/asm-mips/pgtable-64.h b/include/asm-mips/pgtable-64.h
index 1011e06..ac5517f 100644
--- a/include/asm-mips/pgtable-64.h
+++ b/include/asm-mips/pgtable-64.h
@@ -16,13 +16,15 @@
#include <asm/page.h>
#include <asm/cachectl.h>
+#include <asm-generic/pgtable-nopud.h>
+
/*
* Each address space has 2 4K pages as its page directory, giving 1024
* (== PTRS_PER_PGD) 8 byte pointers to pmd tables. Each pmd table is a
- * pair of 4K pages, giving 1024 (== PTRS_PER_PMD) 8 byte pointers to
- * page tables. Each page table is a single 4K page, giving 512 (==
- * PTRS_PER_PTE) 8 byte ptes. Each pgde is initialized to point to
- * invalid_pmd_table, each pmde is initialized to point to
+ * single 4K page, giving 512 (== PTRS_PER_PMD) 8 byte pointers to page
+ * tables. Each page table is also a single 4K page, giving 512 (==
+ * PTRS_PER_PTE) 8 byte ptes. Each pud entry is initialized to point to
+ * invalid_pmd_table, each pmd entry is initialized to point to
* invalid_pte_table, each pte is initialized to 0. When memory is low,
* and a pmd table or a page table allocation fails, empty_bad_pmd_table
* and empty_bad_page_table is returned back to higher layer code, so
@@ -36,17 +38,17 @@
*/
/* PMD_SHIFT determines the size of the area a second-level page table can map */
-#define PMD_SHIFT (PAGE_SHIFT + (PAGE_SHIFT - 3))
+#define PMD_SHIFT (PAGE_SHIFT + (PAGE_SHIFT + PTE_ORDER - 3))
#define PMD_SIZE (1UL << PMD_SHIFT)
#define PMD_MASK (~(PMD_SIZE-1))
/* PGDIR_SHIFT determines what a third-level page table entry can map */
-#define PGDIR_SHIFT (PMD_SHIFT + (PAGE_SHIFT + 1 - 3))
+#define PGDIR_SHIFT (PMD_SHIFT + (PAGE_SHIFT + PMD_ORDER - 3))
#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
#define PGDIR_MASK (~(PGDIR_SIZE-1))
/*
- * For 4kB page size we use a 3 level page tree and a 8kB pmd and pgds which
+ * For 4kB page size we use a 3 level page tree and an 8kB pud, which
* permits us mapping 40 bits of virtual address space.
*
* We used to implement 41 bits by having an order 1 pmd level but that seemed
@@ -65,21 +67,25 @@
*/
#ifdef CONFIG_PAGE_SIZE_4KB
#define PGD_ORDER 1
+#define PUD_ORDER aieeee_attempt_to_allocate_pud
#define PMD_ORDER 0
#define PTE_ORDER 0
#endif
#ifdef CONFIG_PAGE_SIZE_8KB
#define PGD_ORDER 0
+#define PUD_ORDER aieeee_attempt_to_allocate_pud
#define PMD_ORDER 0
#define PTE_ORDER 0
#endif
#ifdef CONFIG_PAGE_SIZE_16KB
#define PGD_ORDER 0
+#define PUD_ORDER aieeee_attempt_to_allocate_pud
#define PMD_ORDER 0
#define PTE_ORDER 0
#endif
#ifdef CONFIG_PAGE_SIZE_64KB
#define PGD_ORDER 0
+#define PUD_ORDER aieeee_attempt_to_allocate_pud
#define PMD_ORDER 0
#define PTE_ORDER 0
#endif
@@ -102,10 +108,10 @@
#define pgd_ERROR(e) \
printk("%s:%d: bad pgd %016lx.\n", __FILE__, __LINE__, pgd_val(e))
-extern pte_t invalid_pte_table[PAGE_SIZE/sizeof(pte_t)];
-extern pte_t empty_bad_page_table[PAGE_SIZE/sizeof(pte_t)];
-extern pmd_t invalid_pmd_table[2*PAGE_SIZE/sizeof(pmd_t)];
-extern pmd_t empty_bad_pmd_table[2*PAGE_SIZE/sizeof(pmd_t)];
+extern pte_t invalid_pte_table[PTRS_PER_PTE];
+extern pte_t empty_bad_page_table[PTRS_PER_PTE];
+extern pmd_t invalid_pmd_table[PTRS_PER_PMD];
+extern pmd_t empty_bad_pmd_table[PTRS_PER_PMD];
/*
* Empty pmd entries point to the invalid_pte_table.
@@ -130,21 +136,24 @@
/*
* Empty pgd entries point to the invalid_pmd_table.
*/
-static inline int pgd_none(pgd_t pgd)
+static inline int pud_none(pud_t pud)
{
- return pgd_val(pgd) == (unsigned long) invalid_pmd_table;
+ return pud_val(pud) == (unsigned long) invalid_pmd_table;
}
-#define pgd_bad(pgd) (pgd_val(pgd) &~ PAGE_MASK)
-
-static inline int pgd_present(pgd_t pgd)
+static inline int pud_bad(pud_t pud)
{
- return pgd_val(pgd) != (unsigned long) invalid_pmd_table;
+ return pud_val(pud) & ~PAGE_MASK;
}
-static inline void pgd_clear(pgd_t *pgdp)
+static inline int pud_present(pud_t pud)
{
- pgd_val(*pgdp) = ((unsigned long) invalid_pmd_table);
+ return pud_val(pud) != (unsigned long) invalid_pmd_table;
+}
+
+static inline void pud_clear(pud_t *pudp)
+{
+ pud_val(*pudp) = ((unsigned long) invalid_pmd_table);
}
#define pte_page(x) pfn_to_page((unsigned long)((pte_val(x) >> PAGE_SHIFT)))
@@ -162,20 +171,20 @@
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, 0)
-#define pgd_index(address) ((address) >> PGDIR_SHIFT)
+#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
/* to find an entry in a page-table-directory */
#define pgd_offset(mm,addr) ((mm)->pgd + pgd_index(addr))
-static inline unsigned long pgd_page(pgd_t pgd)
+static inline unsigned long pud_page(pud_t pud)
{
- return pgd_val(pgd);
+ return pud_val(pud);
}
/* Find an entry in the second-level page table.. */
-static inline pmd_t *pmd_offset(pgd_t * dir, unsigned long address)
+static inline pmd_t *pmd_offset(pud_t * pud, unsigned long address)
{
- return (pmd_t *) pgd_page(*dir) +
+ return (pmd_t *) pud_page(*pud) +
((address >> PMD_SHIFT) & (PTRS_PER_PMD - 1));
}
diff --git a/include/asm-mips/pgtable.h b/include/asm-mips/pgtable.h
index eaf5d9b..34d06fe 100644
--- a/include/asm-mips/pgtable.h
+++ b/include/asm-mips/pgtable.h
@@ -8,8 +8,6 @@
#ifndef _ASM_PGTABLE_H
#define _ASM_PGTABLE_H
-#include <asm-generic/4level-fixup.h>
-
#include <linux/config.h>
#ifdef CONFIG_32BIT
#include <asm/pgtable-32.h>
@@ -148,11 +146,18 @@
#endif
/*
- * (pmds are folded into pgds so this doesn't get actually called,
+ * (pmds are folded into puds so this doesn't get actually called,
* but the define is needed for a generic inline function.)
*/
#define set_pmd(pmdptr, pmdval) do { *(pmdptr) = (pmdval); } while(0)
-#define set_pgd(pgdptr, pgdval) do { *(pgdptr) = (pgdval); } while(0)
+
+#ifdef CONFIG_64BIT
+/*
+ * (puds are folded into pgds so this doesn't get actually called,
+ * but the define is needed for a generic inline function.)
+ */
+#define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0)
+#endif
#define PGD_T_LOG2 ffz(~sizeof(pgd_t))
#define PMD_T_LOG2 ffz(~sizeof(pmd_t))