Commit 86aaf4fd authored May 20, 2008 by Jeremy Fitzhardinge Committed by Linus Torvalds May 20, 2008

x86: clarify use of _PAGE_CHG_MASK



_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>
Tested-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 7f84133a

include/asm-x86/pgtable.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -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)