Messages in this thread Patch in this message | | | Subject | [PATCH 6 of 8] x86: clarify use of _PAGE_CHG_MASK | Date | Tue, 20 May 2008 08:26:22 +0100 | From | Jeremy Fitzhardinge <> |
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_PAGE_CHG_MASK is defined as the set of bits not updated by pte_modify(); specifically, the pfn itself, and the Accessed and Dirty bits (which are updated by hardware).
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> --- include/asm-x86/pgtable.h | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h --- a/include/asm-x86/pgtable.h +++ b/include/asm-x86/pgtable.h @@ -57,6 +57,7 @@ #define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | \ _PAGE_DIRTY) +/* Set of bits not changed in pte_modify */ #define _PAGE_CHG_MASK (PTE_MASK | _PAGE_PCD | _PAGE_PWT | \ _PAGE_ACCESSED | _PAGE_DIRTY)
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