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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2013-11-18 14:58:10 +0530 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-12-09 11:40:28 +1100 |
| commit | c8c06f5a0dde0fed260c54d550962187f266ed0d (patch) | |
| tree | f9fb794ebe4f9ebf0b32a8aabe53c99f275d7cc8 /arch/powerpc/mm/hugetlbpage-hash64.c | |
| parent | 92c08a0d522c7e62c01a63e42597f0c2b02c4245 (diff) | |
| download | linux-stable-c8c06f5a0dde0fed260c54d550962187f266ed0d.tar.gz linux-stable-c8c06f5a0dde0fed260c54d550962187f266ed0d.tar.bz2 linux-stable-c8c06f5a0dde0fed260c54d550962187f266ed0d.zip | |
powerpc/mm: Free up _PAGE_COHERENCE for numa fault use later
Set memory coherence always on hash64 config. If
a platform cannot have memory coherence always set they
can infer that from _PAGE_NO_CACHE and _PAGE_WRITETHRU
like in lpar. So we dont' really need a separate bit
for tracking _PAGE_COHERENCE.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/mm/hugetlbpage-hash64.c')
| -rw-r--r-- | arch/powerpc/mm/hugetlbpage-hash64.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/mm/hugetlbpage-hash64.c b/arch/powerpc/mm/hugetlbpage-hash64.c index 0b7fb6761015..a5bcf9301196 100644 --- a/arch/powerpc/mm/hugetlbpage-hash64.c +++ b/arch/powerpc/mm/hugetlbpage-hash64.c @@ -99,6 +99,10 @@ int __hash_page_huge(unsigned long ea, unsigned long access, unsigned long vsid, /* Add in WIMG bits */ rflags |= (new_pte & (_PAGE_WRITETHRU | _PAGE_NO_CACHE | _PAGE_COHERENT | _PAGE_GUARDED)); + /* + * enable the memory coherence always + */ + rflags |= HPTE_R_M; slot = hpte_insert_repeating(hash, vpn, pa, rflags, 0, mmu_psize, ssize); |