From: Hugh Dickins <hugh@veritas.com>
Date: Tue, 5 Feb 2008 22:26:01 +0000 (+0000)
Subject: stop c_p_a corrupting the pds
X-Git-Tag: v2.6.25-rc1~784
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8cb2a7c1e95e472b5ad8cbde4d5c7bb65c532603;p=linux-2.6

stop c_p_a corrupting the pds

When change_page_attr splits a large page on x86_32 (without PAE), it is
currently corrupting every process's page directory: fix that by removing
the thinko which passes down a physical instead of a virtual address.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index bb55a78dcd..16ce841f08 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -237,7 +237,6 @@ static void __set_pmd_pte(pte_t *kpte, unsigned long address, pte_t pte)
 	if (!SHARED_KERNEL_PMD) {
 		struct page *page;
 
-		address = __pa(address);
 		list_for_each_entry(page, &pgd_list, lru) {
 			pgd_t *pgd;
 			pud_t *pud;