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| author | venkatesh.pallipadi@intel.com <venkatesh.pallipadi@intel.com> | 2008-12-18 11:41:32 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-12-18 13:30:16 -0800 |
| commit | 2520bd3123c00272f818a176c92d03c7d0a113d6 (patch) | |
| tree | 1c5f3e47243d77573cb4933dadc5224d2fb32686 /include/asm-generic/pgtable.h | |
| parent | 8a7b12f70fb135a1b1d865687de3edcdc780f6d1 (diff) | |
| download | lwn-2520bd3123c00272f818a176c92d03c7d0a113d6.tar.gz lwn-2520bd3123c00272f818a176c92d03c7d0a113d6.zip | |
x86: PAT: add pgprot_writecombine() interface for drivers - v3
Impact: New mm functionality.
Add pgprot_writecombine. pgprot_writecombine will be aliased to
pgprot_noncached when not supported by the architecture.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'include/asm-generic/pgtable.h')
| -rw-r--r-- | include/asm-generic/pgtable.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index ef87f889ef62..b84633801fb6 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -129,6 +129,10 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addres #define move_pte(pte, prot, old_addr, new_addr) (pte) #endif +#ifndef pgprot_writecombine +#define pgprot_writecombine pgprot_noncached +#endif + /* * When walking page tables, get the address of the next boundary, * or the end address of the range if that comes earlier. Although no |