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authorDavid Gibson <david@gibson.dropbear.id.au>2009-10-26 19:24:31 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-10-30 17:20:57 +1100
commitf71dc176aa06359681c30ba6877ffccab6fba3a6 (patch)
treeb72d97c2db323ab94399cd2633108c0a00a5da31 /arch/powerpc/mm/hugetlbpage.c
parent8be8cf5b47f72096e42bf88cc3afff7a942a346c (diff)
powerpc/mm: Make hpte_need_flush() correctly mask for multiple page sizes
Currently, hpte_need_flush() only correctly flushes the given address for normal pages. Callers for hugepages are required to mask the address themselves. But hpte_need_flush() already looks up the page sizes for its own reasons, so this is a rather silly imposition on the callers. This patch alters it to mask based on the pagesize it has looked up itself, and removes the awkward masking code in the hugepage caller. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/mm/hugetlbpage.c')
-rw-r--r--arch/powerpc/mm/hugetlbpage.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 90df6ffe3a4..3d542a9732a 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -445,11 +445,7 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
* necessary anymore if we make hpte_need_flush() get the
* page size from the slices
*/
- unsigned int psize = get_slice_psize(mm, addr);
- unsigned int shift = mmu_psize_to_shift(psize);
- unsigned long sz = ((1UL) << shift);
- struct hstate *hstate = size_to_hstate(sz);
- pte_update(mm, addr & hstate->mask, ptep, ~0UL, 1);
+ pte_update(mm, addr, ptep, ~0UL, 1);
}
*ptep = __pte(pte_val(pte) & ~_PAGE_HPTEFLAGS);
}