diff options
Diffstat (limited to 'arch/powerpc/include/asm/book3s/64/hash.h')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/hash.h | 38 |
1 files changed, 18 insertions, 20 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/hash.h b/arch/powerpc/include/asm/book3s/64/hash.h index 4fffc963ac14..556670212781 100644 --- a/arch/powerpc/include/asm/book3s/64/hash.h +++ b/arch/powerpc/include/asm/book3s/64/hash.h @@ -26,19 +26,22 @@ #define _PAGE_TOLERANT 0x00030 /* tolerant memory, cache inhibited */ #define _PAGE_DIRTY 0x00080 /* C: page changed */ #define _PAGE_ACCESSED 0x00100 /* R: page referenced */ -#define _PAGE_SPECIAL 0x00400 /* software: special page */ -#define _PAGE_BUSY 0x00800 /* software: PTE & hash are busy */ - +/* + * Software bits + */ #ifdef CONFIG_MEM_SOFT_DIRTY -#define _PAGE_SOFT_DIRTY 0x200 /* software: software dirty tracking */ +#define _PAGE_SOFT_DIRTY 0x00200 /* software: software dirty tracking */ #else -#define _PAGE_SOFT_DIRTY 0x000 +#define _PAGE_SOFT_DIRTY 0x00000 #endif +#define _PAGE_SPECIAL 0x00400 /* software: special page */ +#define H_PAGE_BUSY 0x00800 /* software: PTE & hash are busy */ + -#define _PAGE_F_GIX_SHIFT 57 -#define _PAGE_F_GIX (7ul << 57) /* HPTE index within HPTEG */ -#define _PAGE_F_SECOND (1ul << 60) /* HPTE is in 2ndary HPTEG */ -#define _PAGE_HASHPTE (1ul << 61) /* PTE has associated HPTE */ +#define H_PAGE_F_GIX_SHIFT 57 +#define H_PAGE_F_GIX (7ul << 57) /* HPTE index within HPTEG */ +#define H_PAGE_F_SECOND (1ul << 60) /* HPTE is in 2ndary HPTEG */ +#define H_PAGE_HASHPTE (1ul << 61) /* PTE has associated HPTE */ #define _PAGE_PTE (1ul << 62) /* distinguishes PTEs from pointers */ #define _PAGE_PRESENT (1ul << 63) /* pte contains a translation */ /* @@ -48,11 +51,6 @@ */ #define _PAGE_NO_CACHE _PAGE_TOLERANT /* - * We need to differentiate between explicit huge page and THP huge - * page, since THP huge page also need to track real subpage details - */ -#define _PAGE_THP_HUGE _PAGE_4K_PFN -/* * We support 57 bit real address in pte. Clear everything above 57, and * every thing below PAGE_SHIFT; */ @@ -61,7 +59,7 @@ * set of bits not changed in pmd_modify. */ #define _HPAGE_CHG_MASK (PTE_RPN_MASK | _PAGE_HPTEFLAGS | _PAGE_DIRTY | \ - _PAGE_ACCESSED | _PAGE_THP_HUGE | _PAGE_PTE | \ + _PAGE_ACCESSED | H_PAGE_THP_HUGE | _PAGE_PTE | \ _PAGE_SOFT_DIRTY) @@ -148,7 +146,7 @@ * Mask of bits returned by pte_pgprot() */ #define PAGE_PROT_BITS (_PAGE_SAO | _PAGE_NON_IDEMPOTENT | _PAGE_TOLERANT | \ - _PAGE_4K_PFN | _PAGE_PRIVILEGED | _PAGE_ACCESSED | \ + H_PAGE_4K_PFN | _PAGE_PRIVILEGED | _PAGE_ACCESSED | \ _PAGE_READ | _PAGE_WRITE | _PAGE_DIRTY | _PAGE_EXEC | \ _PAGE_SOFT_DIRTY) /* @@ -262,14 +260,14 @@ static inline unsigned long pte_update(struct mm_struct *mm, bne- 1b" : "=&r" (old_be), "=&r" (tmp_be), "=m" (*ptep) : "r" (ptep), "r" (cpu_to_be64(clr)), "m" (*ptep), - "r" (cpu_to_be64(_PAGE_BUSY)), "r" (cpu_to_be64(set)) + "r" (cpu_to_be64(H_PAGE_BUSY)), "r" (cpu_to_be64(set)) : "cc" ); /* huge pages use the old page table lock */ if (!huge) assert_pte_locked(mm, addr); old = be64_to_cpu(old_be); - if (old & _PAGE_HASHPTE) + if (old & H_PAGE_HASHPTE) hpte_need_flush(mm, addr, ptep, old, huge); return old; @@ -287,7 +285,7 @@ static inline int __ptep_test_and_clear_young(struct mm_struct *mm, { unsigned long old; - if ((pte_val(*ptep) & (_PAGE_ACCESSED | _PAGE_HASHPTE)) == 0) + if ((pte_val(*ptep) & (_PAGE_ACCESSED | H_PAGE_HASHPTE)) == 0) return 0; old = pte_update(mm, addr, ptep, _PAGE_ACCESSED, 0, 0); return (old & _PAGE_ACCESSED) != 0; @@ -355,7 +353,7 @@ static inline void __ptep_set_access_flags(pte_t *ptep, pte_t entry) stdcx. %0,0,%4\n\ bne- 1b" :"=&r" (old), "=&r" (tmp), "=m" (*ptep) - :"r" (val), "r" (ptep), "m" (*ptep), "r" (cpu_to_be64(_PAGE_BUSY)) + :"r" (val), "r" (ptep), "m" (*ptep), "r" (cpu_to_be64(H_PAGE_BUSY)) :"cc"); } |