diff options
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/include/asm/page.h | 12 | ||||
| -rw-r--r-- | arch/mips/include/asm/pgalloc.h | 4 | ||||
| -rw-r--r-- | arch/mips/include/asm/pgtable-64.h | 36 | ||||
| -rw-r--r-- | arch/mips/include/asm/pgtable.h | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/asm-offsets.c | 4 | ||||
| -rw-r--r-- | arch/mips/mm/init.c | 2 | ||||
| -rw-r--r-- | arch/mips/mm/pgtable-64.c | 44 | ||||
| -rw-r--r-- | arch/mips/mm/tlbex.c | 2 |
8 files changed, 71 insertions, 35 deletions
diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h index f266295cce51..ac32572430f4 100644 --- a/arch/mips/include/asm/page.h +++ b/arch/mips/include/asm/page.h @@ -107,18 +107,6 @@ typedef struct { unsigned long pte; } pte_t; typedef struct page *pgtable_t; /* - * 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; -#define pmd_val(x) ((x).pmd) -#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>. */ diff --git a/arch/mips/include/asm/pgalloc.h b/arch/mips/include/asm/pgalloc.h index 3738f4b48cbd..881d18b4e298 100644 --- a/arch/mips/include/asm/pgalloc.h +++ b/arch/mips/include/asm/pgalloc.h @@ -31,7 +31,7 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, */ extern void pmd_init(unsigned long page, unsigned long pagetable); -#ifdef CONFIG_64BIT +#ifndef __PAGETABLE_PMD_FOLDED static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) { @@ -104,7 +104,7 @@ do { \ tlb_remove_page((tlb), pte); \ } while (0) -#ifdef CONFIG_64BIT +#ifndef __PAGETABLE_PMD_FOLDED static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) { diff --git a/arch/mips/include/asm/pgtable-64.h b/arch/mips/include/asm/pgtable-64.h index 8eda30b467da..24314d21a708 100644 --- a/arch/mips/include/asm/pgtable-64.h +++ b/arch/mips/include/asm/pgtable-64.h @@ -16,7 +16,11 @@ #include <asm/cachectl.h> #include <asm/fixmap.h> +#ifdef CONFIG_PAGE_SIZE_64KB +#include <asm-generic/pgtable-nopmd.h> +#else #include <asm-generic/pgtable-nopud.h> +#endif /* * Each address space has 2 4K pages as its page directory, giving 1024 @@ -37,13 +41,20 @@ * fault address - VMALLOC_START. */ + +/* PGDIR_SHIFT determines what a third-level page table entry can map */ +#ifdef __PAGETABLE_PMD_FOLDED +#define PGDIR_SHIFT (PAGE_SHIFT + PAGE_SHIFT + PTE_ORDER - 3) +#else + /* PMD_SHIFT determines the size of the area a second-level page table can map */ #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 + PMD_ORDER - 3)) +#endif #define PGDIR_SIZE (1UL << PGDIR_SHIFT) #define PGDIR_MASK (~(PGDIR_SIZE-1)) @@ -92,12 +103,14 @@ #ifdef CONFIG_PAGE_SIZE_64KB #define PGD_ORDER 0 #define PUD_ORDER aieeee_attempt_to_allocate_pud -#define PMD_ORDER 0 +#define PMD_ORDER aieeee_attempt_to_allocate_pmd #define PTE_ORDER 0 #endif #define PTRS_PER_PGD ((PAGE_SIZE << PGD_ORDER) / sizeof(pgd_t)) +#ifndef __PAGETABLE_PMD_FOLDED #define PTRS_PER_PMD ((PAGE_SIZE << PMD_ORDER) / sizeof(pmd_t)) +#endif #define PTRS_PER_PTE ((PAGE_SIZE << PTE_ORDER) / sizeof(pte_t)) #if PGDIR_SIZE >= TASK_SIZE @@ -122,15 +135,30 @@ #define pte_ERROR(e) \ printk("%s:%d: bad pte %016lx.\n", __FILE__, __LINE__, pte_val(e)) +#ifndef __PAGETABLE_PMD_FOLDED #define pmd_ERROR(e) \ printk("%s:%d: bad pmd %016lx.\n", __FILE__, __LINE__, pmd_val(e)) +#endif #define pgd_ERROR(e) \ printk("%s:%d: bad pgd %016lx.\n", __FILE__, __LINE__, pgd_val(e)) extern pte_t invalid_pte_table[PTRS_PER_PTE]; extern pte_t empty_bad_page_table[PTRS_PER_PTE]; + + +#ifndef __PAGETABLE_PMD_FOLDED +/* + * For 3-level pagetables we defines these ourselves, for 2-level the + * definitions are supplied by <asm-generic/pgtable-nopmd.h>. + */ +typedef struct { unsigned long pmd; } pmd_t; +#define pmd_val(x) ((x).pmd) +#define __pmd(x) ((pmd_t) { (x) } ) + + extern pmd_t invalid_pmd_table[PTRS_PER_PMD]; extern pmd_t empty_bad_pmd_table[PTRS_PER_PMD]; +#endif /* * Empty pgd/pmd entries point to the invalid_pte_table. @@ -151,6 +179,7 @@ static inline void pmd_clear(pmd_t *pmdp) { pmd_val(*pmdp) = ((unsigned long) invalid_pte_table); } +#ifndef __PAGETABLE_PMD_FOLDED /* * Empty pud entries point to the invalid_pmd_table. @@ -174,6 +203,7 @@ static inline void pud_clear(pud_t *pudp) { pud_val(*pudp) = ((unsigned long) invalid_pmd_table); } +#endif #define pte_page(x) pfn_to_page(pte_pfn(x)) @@ -198,6 +228,7 @@ static inline void pud_clear(pud_t *pudp) /* to find an entry in a page-table-directory */ #define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr)) +#ifndef __PAGETABLE_PMD_FOLDED static inline unsigned long pud_page_vaddr(pud_t pud) { return pud_val(pud); @@ -210,6 +241,7 @@ static inline pmd_t *pmd_offset(pud_t * pud, unsigned long address) { return (pmd_t *) pud_page_vaddr(*pud) + pmd_index(address); } +#endif /* Find an entry in the third-level page table.. */ #define __pte_offset(address) \ diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h index 1854336e56a2..02335fda9e77 100644 --- a/arch/mips/include/asm/pgtable.h +++ b/arch/mips/include/asm/pgtable.h @@ -177,7 +177,7 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *pt */ #define set_pmd(pmdptr, pmdval) do { *(pmdptr) = (pmdval); } while(0) -#ifdef CONFIG_64BIT +#ifndef __PAGETABLE_PMD_FOLDED /* * (puds are folded into pgds so this doesn't get actually called, * but the define is needed for a generic inline function.) diff --git a/arch/mips/kernel/asm-offsets.c b/arch/mips/kernel/asm-offsets.c index 2c1e1d02338b..ca6c83218caa 100644 --- a/arch/mips/kernel/asm-offsets.c +++ b/arch/mips/kernel/asm-offsets.c @@ -188,11 +188,15 @@ void output_mm_defines(void) DEFINE(_PTE_T_SIZE, sizeof(pte_t)); BLANK(); DEFINE(_PGD_T_LOG2, PGD_T_LOG2); +#ifndef __PAGETABLE_PMD_FOLDED DEFINE(_PMD_T_LOG2, PMD_T_LOG2); +#endif DEFINE(_PTE_T_LOG2, PTE_T_LOG2); BLANK(); DEFINE(_PGD_ORDER, PGD_ORDER); +#ifndef __PAGETABLE_PMD_FOLDED DEFINE(_PMD_ORDER, PMD_ORDER); +#endif DEFINE(_PTE_ORDER, PTE_ORDER); BLANK(); DEFINE(_PMD_SHIFT, PMD_SHIFT); diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c index 1651942f7feb..3c5b7de10af5 100644 --- a/arch/mips/mm/init.c +++ b/arch/mips/mm/init.c @@ -477,7 +477,7 @@ unsigned long pgd_current[NR_CPUS]; * will officially be retired. */ pgd_t swapper_pg_dir[_PTRS_PER_PGD] __page_aligned(_PGD_ORDER); -#ifdef CONFIG_64BIT +#ifndef __PAGETABLE_PMD_FOLDED pmd_t invalid_pmd_table[PTRS_PER_PMD] __page_aligned(PMD_ORDER); #endif pte_t invalid_pte_table[PTRS_PER_PTE] __page_aligned(PTE_ORDER); diff --git a/arch/mips/mm/pgtable-64.c b/arch/mips/mm/pgtable-64.c index 1121019fa456..78eaa4f0b0ec 100644 --- a/arch/mips/mm/pgtable-64.c +++ b/arch/mips/mm/pgtable-64.c @@ -15,23 +15,31 @@ void pgd_init(unsigned long page) { unsigned long *p, *end; + unsigned long entry; + +#ifdef __PAGETABLE_PMD_FOLDED + entry = (unsigned long)invalid_pte_table; +#else + entry = (unsigned long)invalid_pmd_table; +#endif p = (unsigned long *) page; end = p + PTRS_PER_PGD; while (p < end) { - p[0] = (unsigned long) invalid_pmd_table; - p[1] = (unsigned long) invalid_pmd_table; - p[2] = (unsigned long) invalid_pmd_table; - p[3] = (unsigned long) invalid_pmd_table; - p[4] = (unsigned long) invalid_pmd_table; - p[5] = (unsigned long) invalid_pmd_table; - p[6] = (unsigned long) invalid_pmd_table; - p[7] = (unsigned long) invalid_pmd_table; + p[0] = entry; + p[1] = entry; + p[2] = entry; + p[3] = entry; + p[4] = entry; + p[5] = entry; + p[6] = entry; + p[7] = entry; p += 8; } } +#ifndef __PAGETABLE_PMD_FOLDED void pmd_init(unsigned long addr, unsigned long pagetable) { unsigned long *p, *end; @@ -40,17 +48,18 @@ void pmd_init(unsigned long addr, unsigned long pagetable) end = p + PTRS_PER_PMD; while (p < end) { - p[0] = (unsigned long)pagetable; - p[1] = (unsigned long)pagetable; - p[2] = (unsigned long)pagetable; - p[3] = (unsigned long)pagetable; - p[4] = (unsigned long)pagetable; - p[5] = (unsigned long)pagetable; - p[6] = (unsigned long)pagetable; - p[7] = (unsigned long)pagetable; + p[0] = pagetable; + p[1] = pagetable; + p[2] = pagetable; + p[3] = pagetable; + p[4] = pagetable; + p[5] = pagetable; + p[6] = pagetable; + p[7] = pagetable; p += 8; } } +#endif void __init pagetable_init(void) { @@ -59,8 +68,9 @@ void __init pagetable_init(void) /* Initialize the entire pgd. */ pgd_init((unsigned long)swapper_pg_dir); +#ifndef __PAGETABLE_PMD_FOLDED pmd_init((unsigned long)invalid_pmd_table, (unsigned long)invalid_pte_table); - +#endif pgd_base = swapper_pg_dir; /* * Fixed mappings: diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c index badcf5e8d695..eae45f0f9a16 100644 --- a/arch/mips/mm/tlbex.c +++ b/arch/mips/mm/tlbex.c @@ -549,11 +549,13 @@ build_get_pmde64(u32 **p, struct uasm_label **l, struct uasm_reloc **r, uasm_i_andi(p, tmp, tmp, (PTRS_PER_PGD - 1)<<3); uasm_i_daddu(p, ptr, ptr, tmp); /* add in pgd offset */ +#ifndef __PAGETABLE_PMD_FOLDED uasm_i_dmfc0(p, tmp, C0_BADVADDR); /* get faulting address */ uasm_i_ld(p, ptr, 0, ptr); /* get pmd pointer */ uasm_i_dsrl(p, tmp, tmp, PMD_SHIFT-3); /* get pmd offset in bytes */ uasm_i_andi(p, tmp, tmp, (PTRS_PER_PMD - 1)<<3); uasm_i_daddu(p, ptr, ptr, tmp); /* add in pmd offset */ +#endif } /* |