diff options
Diffstat (limited to 'include/asm-powerpc/pgtable-ppc64.h')
| -rw-r--r-- | include/asm-powerpc/pgtable-ppc64.h | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/include/asm-powerpc/pgtable-ppc64.h b/include/asm-powerpc/pgtable-ppc64.h index 27f1869..5fc78c0 100644 --- a/include/asm-powerpc/pgtable-ppc64.h +++ b/include/asm-powerpc/pgtable-ppc64.h @@ -65,15 +65,15 @@ #define VMALLOC_REGION_ID (REGION_ID(VMALLOC_START)) #define KERNEL_REGION_ID (REGION_ID(PAGE_OFFSET)) +#define VMEMMAP_REGION_ID (0xfUL) #define USER_REGION_ID (0UL) /* - * Defines the address of the vmemap area, in the top 16th of the - * kernel region. + * Defines the address of the vmemap area, in its own region */ -#define VMEMMAP_BASE (ASM_CONST(CONFIG_KERNEL_START) + \ - (0xfUL << (REGION_SHIFT - 4))) -#define vmemmap ((struct page *)VMEMMAP_BASE) +#define VMEMMAP_BASE (VMEMMAP_REGION_ID << REGION_SHIFT) +#define vmemmap ((struct page *)VMEMMAP_BASE) + /* * Common bits in a linux-style PTE. These match the bits in the @@ -91,9 +91,11 @@ #define _PAGE_DIRTY 0x0080 /* C: page changed */ #define _PAGE_ACCESSED 0x0100 /* R: page referenced */ #define _PAGE_RW 0x0200 /* software: user write access allowed */ -#define _PAGE_HASHPTE 0x0400 /* software: pte has an associated HPTE */ #define _PAGE_BUSY 0x0800 /* software: PTE & hash are busy */ +/* Strong Access Ordering */ +#define _PAGE_SAO (_PAGE_WRITETHRU | _PAGE_NO_CACHE | _PAGE_COHERENT) + #define _PAGE_BASE (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_COHERENT) #define _PAGE_WRENABLE (_PAGE_RW | _PAGE_DIRTY) @@ -115,6 +117,10 @@ #define PAGE_AGP __pgprot(_PAGE_BASE | _PAGE_WRENABLE | _PAGE_NO_CACHE) #define HAVE_PAGE_AGP +#define PAGE_PROT_BITS __pgprot(_PAGE_GUARDED | _PAGE_COHERENT | \ + _PAGE_NO_CACHE | _PAGE_WRITETHRU | \ + _PAGE_4K_PFN | _PAGE_RW | _PAGE_USER | \ + _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_EXEC) /* PTEIDX nibble */ #define _PTEIDX_SECONDARY 0x8 #define _PTEIDX_GROUP_IX 0x7 @@ -239,7 +245,7 @@ static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_RW;} static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY;} static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED;} static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE;} -static inline int pte_special(pte_t pte) { return 0; } +static inline int pte_special(pte_t pte) { return pte_val(pte) & _PAGE_SPECIAL; } static inline void pte_uncache(pte_t pte) { pte_val(pte) |= _PAGE_NO_CACHE; } static inline void pte_cache(pte_t pte) { pte_val(pte) &= ~_PAGE_NO_CACHE; } @@ -259,7 +265,11 @@ static inline pte_t pte_mkyoung(pte_t pte) { static inline pte_t pte_mkhuge(pte_t pte) { return pte; } static inline pte_t pte_mkspecial(pte_t pte) { - return pte; } + pte_val(pte) |= _PAGE_SPECIAL; return pte; } +static inline unsigned long pte_pgprot(pte_t pte) +{ + return __pgprot(pte_val(pte)) & PAGE_PROT_BITS; +} /* Atomic PTE updates */ static inline unsigned long pte_update(struct mm_struct *mm, @@ -314,6 +324,16 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, old = pte_update(mm, addr, ptep, _PAGE_RW, 0); } +static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, + unsigned long addr, pte_t *ptep) +{ + unsigned long old; + + if ((pte_val(*ptep) & _PAGE_RW) == 0) + return; + old = pte_update(mm, addr, ptep, _PAGE_RW, 1); +} + /* * We currently remove entries from the hashtable regardless of whether * the entry was young or dirty. The generic routines only flush if the |
