---

yaml --- r: 16382 b: refs/heads/master c: c728252 h: refs/heads/master v: v3
git-mirror · Jan 6, 2006 · c2dfb0a · c2dfb0a
1 parent 8dfeca6
commit c2dfb0a
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Showing 3 changed files with 10 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 63aaf3086baea7b94c218053af8237f9dbac5d05
+refs/heads/master: c728252c7a072628bd3932ff87943d1e12423359
diff --git a/trunk/arch/x86_64/mm/pageattr.c b/trunk/arch/x86_64/mm/pageattr.c
@@ -128,6 +128,7 @@ __change_page_attr(unsigned long address, unsigned long pfn, pgprot_t prot,
 	pte_t *kpte; 
 	struct page *kpte_page;
 	unsigned kpte_flags;
+	pgprot_t ref_prot2;
 	kpte = lookup_address(address);
 	if (!kpte) return 0;
 	kpte_page = virt_to_page(((unsigned long)kpte) & PAGE_MASK);
@@ -140,10 +141,14 @@ __change_page_attr(unsigned long address, unsigned long pfn, pgprot_t prot,
  			 * split_large_page will take the reference for this change_page_attr
  			 * on the split page.
  			 */
-			struct page *split = split_large_page(address, prot, ref_prot); 
+
+			struct page *split;
+			ref_prot2 = __pgprot(pgprot_val(pte_pgprot(*lookup_address(address))) & ~(1<<_PAGE_BIT_PSE));
+
+			split = split_large_page(address, prot, ref_prot2);
 			if (!split)
 				return -ENOMEM;
-			set_pte(kpte,mk_pte(split, ref_prot));
+			set_pte(kpte,mk_pte(split, ref_prot2));
 			kpte_page = split;
 		}	
 		get_page(kpte_page);

diff --git a/trunk/include/asm-x86_64/pgtable.h b/trunk/include/asm-x86_64/pgtable.h
@@ -122,6 +122,8 @@ static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, unsigned long
 
 #define pte_same(a, b)		((a).pte == (b).pte)
 
+#define pte_pgprot(a)	(__pgprot((a).pte & ~PHYSICAL_PAGE_MASK))
+
 #define PMD_SIZE	(1UL << PMD_SHIFT)
 #define PMD_MASK	(~(PMD_SIZE-1))
 #define PUD_SIZE	(1UL << PUD_SHIFT)