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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2014-02-12 04:43:36 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-02-17 01:19:35 +0100 |
| commit | 88247e8d7ba6639f2c199e147ebbc91f7673150c (patch) | |
| tree | bceaa92e71d6c0dfd668f84f188e0ac8ec666504 /arch/powerpc/include/asm/hugetlb.h | |
| parent | powerpc/pseries: Add Gen3 definitions for PCIE link speed (diff) | |
| download | linux-88247e8d7ba6639f2c199e147ebbc91f7673150c.tar.xz linux-88247e8d7ba6639f2c199e147ebbc91f7673150c.zip | |
powerpc/mm: Add new "set" flag argument to pte/pmd update function
pte_update() is a powerpc-ism used to change the bits of a PTE
when the access permission is being restricted (a flush is
potentially needed).
It uses atomic operations on when needed and handles the hash
synchronization on hash based processors.
It is currently only used to clear PTE bits and so the current
implementation doesn't provide a way to also set PTE bits.
The new _PAGE_NUMA bit, when set, is actually restricting access
so it must use that function too, so this change adds the ability
for pte_update() to also set bits.
We will use this later to set the _PAGE_NUMA bit.
Acked-by: Mel Gorman <mgorman@suse.de>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/hugetlb.h')
| -rw-r--r-- | arch/powerpc/include/asm/hugetlb.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h index d750336b171d..623f2971ce0e 100644 --- a/arch/powerpc/include/asm/hugetlb.h +++ b/arch/powerpc/include/asm/hugetlb.h @@ -127,7 +127,7 @@ static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { #ifdef CONFIG_PPC64 - return __pte(pte_update(mm, addr, ptep, ~0UL, 1)); + return __pte(pte_update(mm, addr, ptep, ~0UL, 0, 1)); #else return __pte(pte_update(ptep, ~0UL, 0)); #endif |