---

yaml --- r: 85768 b: refs/heads/master c: af96e44 h: refs/heads/master v: v3
git-mirror · Feb 18, 2008 · e2139dd · e2139dd
1 parent 202e156
commit e2139dd
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Showing 2 changed files with 6 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 31eedd823c1bf3650c450346a0d0c39431034eb9
+refs/heads/master: af96e4438a4b34a257f5318a296e0b9e182e7ab9
diff --git a/trunk/arch/x86/mm/pageattr.c b/trunk/arch/x86/mm/pageattr.c
@@ -669,7 +669,7 @@ static int change_page_attr_set_clr(unsigned long addr, int numpages,
 				    pgprot_t mask_set, pgprot_t mask_clr)
 {
 	struct cpa_data cpa;
-	int ret, cache;
+	int ret, cache, checkalias;
 
 	/*
 	 * Check, if we are requested to change a not supported
@@ -695,7 +695,10 @@ static int change_page_attr_set_clr(unsigned long addr, int numpages,
 	cpa.mask_clr = mask_clr;
 	cpa.flushtlb = 0;
 
-	ret = __change_page_attr_set_clr(&cpa, 1);
+	/* No alias checking for _NX bit modifications */
+	checkalias = (pgprot_val(mask_set) | pgprot_val(mask_clr)) != _PAGE_NX;
+
+	ret = __change_page_attr_set_clr(&cpa, checkalias);
 
 	/*
 	 * Check whether we really changed something: