x86: strengthen 64-bit p?d_bad()

[linux-2.6-omap-h63xx.git] / include / asm-x86 / pgtable_64.h

diff --git a/include/asm-x86/pgtable_64.h b/include/asm-x86/pgtable_64.h
index efe83dcbd41200fc6822a96ebea1a678fe452ef1..1cc50d22d735388f9bb74a11f0765e4d6a1d2472 100644 (file)
--- a/include/asm-x86/pgtable_64.h
+++ b/include/asm-x86/pgtable_64.h
@@ -151,19 +151,19 @@ static inline void native_pgd_clear(pgd_t *pgd)
 
 #ifndef __ASSEMBLY__
 
-static inline unsigned long pgd_bad(pgd_t pgd)
+static inline int pgd_bad(pgd_t pgd)
 {
-       return pgd_val(pgd) & ~(PTE_MASK | _KERNPG_TABLE | _PAGE_USER);
+       return (pgd_val(pgd) & ~(PTE_MASK | _PAGE_USER)) != _KERNPG_TABLE;
 }
 
-static inline unsigned long pud_bad(pud_t pud)
+static inline int pud_bad(pud_t pud)
 {
-       return pud_val(pud) & ~(PTE_MASK | _KERNPG_TABLE | _PAGE_USER);
+       return (pud_val(pud) & ~(PTE_MASK | _PAGE_USER)) != _KERNPG_TABLE;
 }
 
-static inline unsigned long pmd_bad(pmd_t pmd)
+static inline int pmd_bad(pmd_t pmd)
 {
-       return pmd_val(pmd) & ~(PTE_MASK | _KERNPG_TABLE | _PAGE_USER);
+       return (pmd_val(pmd) & ~(PTE_MASK | _PAGE_USER)) != _KERNPG_TABLE;
 }
 
 #define pte_none(x)    (!pte_val((x)))