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authorvenkatesh.pallipadi@intel.com <venkatesh.pallipadi@intel.com>2008-12-18 14:41:32 -0500
committerH. Peter Anvin <hpa@zytor.com>2008-12-18 16:30:16 -0500
commit2520bd3123c00272f818a176c92d03c7d0a113d6 (patch)
tree1c5f3e47243d77573cb4933dadc5224d2fb32686 /include/asm-generic
parent8a7b12f70fb135a1b1d865687de3edcdc780f6d1 (diff)
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')
-rw-r--r--include/asm-generic/pgtable.h4
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
129#define move_pte(pte, prot, old_addr, new_addr) (pte) 129#define move_pte(pte, prot, old_addr, new_addr) (pte)
130#endif 130#endif
131 131
132#ifndef pgprot_writecombine
133#define pgprot_writecombine pgprot_noncached
134#endif
135
132/* 136/*
133 * When walking page tables, get the address of the next boundary, 137 * When walking page tables, get the address of the next boundary,
134 * or the end address of the range if that comes earlier. Although no 138 * or the end address of the range if that comes earlier. Although no