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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-04-27 21:22:55 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-05-06 16:49:26 +1000 |
| commit | 75c1d539ea13117cbe95e2c343e52af67d735145 (patch) | |
| tree | f45295016163b1e1914dc1f48c307e64215f5f2c | |
| parent | aef40e87d866355ffd279ab21021de733242d0d5 (diff) | |
| download | kernel_samsung_espresso10-75c1d539ea13117cbe95e2c343e52af67d735145.zip kernel_samsung_espresso10-75c1d539ea13117cbe95e2c343e52af67d735145.tar.gz kernel_samsung_espresso10-75c1d539ea13117cbe95e2c343e52af67d735145.tar.bz2 | |
powerpc: Fix CONFIG_DEBUG_PAGEALLOC on 603/e300
So we tried to speed things up a bit using flush_hash_pages() directly
but that falls over on 603 of course meaning we fail to flush the TLB
properly and we may even end up having it corrupt memory randomly by
accessing a hash table that doesn't exist.
This removes the "optimization" by always going through flush_tlb_page()
for now at least.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| -rw-r--r-- | arch/powerpc/mm/pgtable_32.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 767b0cf..9fc02dc 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -393,11 +393,7 @@ static int __change_page_attr(struct page *page, pgprot_t prot) return -EINVAL; __set_pte_at(&init_mm, address, kpte, mk_pte(page, prot), 0); wmb(); -#ifdef CONFIG_PPC_STD_MMU - flush_hash_pages(0, address, pmd_val(*kpmd), 1); -#else flush_tlb_page(NULL, address); -#endif pte_unmap(kpte); return 0; |