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| author | Ingo Molnar <mingo@elte.hu> | 2008-07-18 21:13:20 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-18 21:13:20 +0200 |
| commit | f6dc8ccaab6d8f63cbae1e6c73fe972b26f5376c (patch) | |
| tree | c5643fcdc884a8d0bfc3f1bc28039cab7394e5bc /include/asm-powerpc/pgtable-ppc64.h | |
| parent | 323ec001c6bb98eeabb5abbdbb8c8055d9496554 (diff) | |
| parent | 5b664cb235e97afbf34db9c4d77f08ebd725335e (diff) | |
| download | op-kernel-dev-f6dc8ccaab6d8f63cbae1e6c73fe972b26f5376c.zip op-kernel-dev-f6dc8ccaab6d8f63cbae1e6c73fe972b26f5376c.tar.gz | |
Merge branch 'linus' into core/generic-dma-coherent
Conflicts:
kernel/Makefile
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-powerpc/pgtable-ppc64.h')
| -rw-r--r-- | include/asm-powerpc/pgtable-ppc64.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/include/asm-powerpc/pgtable-ppc64.h b/include/asm-powerpc/pgtable-ppc64.h index cc6a43b..ab98a9c 100644 --- a/include/asm-powerpc/pgtable-ppc64.h +++ b/include/asm-powerpc/pgtable-ppc64.h @@ -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) @@ -314,6 +316,16 @@ 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 |
