From 75c1d539ea13117cbe95e2c343e52af67d735145 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 27 Apr 2010 21:22:55 +0000 Subject: [PATCH] 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 --- arch/powerpc/mm/pgtable_32.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 767b0cf17d33..9fc02dc72ce9 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; -- 2.39.5