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powerpc/mm: Fixup _HPAGE_CHG_MASK 

This was wrongly updated by commit 7aa9a23c69 ("powerpc, thp: remove
infrastructure for handling splitting PMDs") during the last merge
window. Fix it up.

This could lead to incorrect behaviour in THP and/or mprotect(), at a
minimum.

Fixes: 7aa9a23c69 ("powerpc, thp: remove infrastructure for handling splitting PMDs")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V 2016-01-27 12:04:20 +05:30 committed by Michael Ellerman
parent 370f06c885
commit 2d19fc6395
1 changed files with 3 additions and 1 deletions
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4
arch/powerpc/include/asm/book3s/64/hash.h
View File

@ -50,7 +50,9 @@
* set of bits not changed in pmd_modify.
*/
#define _HPAGE_CHG_MASK (PTE_RPN_MASK | _PAGE_HPTEFLAGS | _PAGE_DIRTY | \
_PAGE_ACCESSED | _PAGE_THP_HUGE)
_PAGE_ACCESSED | _PAGE_THP_HUGE | _PAGE_PTE | \
_PAGE_SOFT_DIRTY)
#ifdef CONFIG_PPC_64K_PAGES
#include <asm/book3s/64/hash-64k.h>