diff options
| -rw-r--r-- | arch/x86/mm/fault_32.c | 2 | ||||
| -rw-r--r-- | arch/x86/mm/init_32.c | 2 | ||||
| -rw-r--r-- | include/asm-x86/pgtable-2level.h | 8 | ||||
| -rw-r--r-- | include/asm-x86/pgtable-3level.h | 8 | ||||
| -rw-r--r-- | include/asm-x86/pgtable.h | 1 |
5 files changed, 3 insertions, 18 deletions
diff --git a/arch/x86/mm/fault_32.c b/arch/x86/mm/fault_32.c index 41c31968a74..f7972ae7da0 100644 --- a/arch/x86/mm/fault_32.c +++ b/arch/x86/mm/fault_32.c @@ -615,7 +615,7 @@ no_context: if (error_code & PF_INSTR) { pte_t *pte = lookup_address(address); - if (pte && pte_present(*pte) && !pte_exec_kernel(*pte)) + if (pte && pte_present(*pte) && !pte_exec(*pte)) printk(KERN_CRIT "kernel tried to execute " "NX-protected page - exploit attempt? " "(uid: %d)\n", current->uid); diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index 724a5eff6f3..5080646da77 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -542,7 +542,7 @@ int __init set_kernel_exec(unsigned long vaddr, int enable) pte = lookup_address(vaddr); BUG_ON(!pte); - if (!pte_exec_kernel(*pte)) + if (!pte_exec(*pte)) ret = 0; if (enable) diff --git a/include/asm-x86/pgtable-2level.h b/include/asm-x86/pgtable-2level.h index ce486bdbbbb..701404fab30 100644 --- a/include/asm-x86/pgtable-2level.h +++ b/include/asm-x86/pgtable-2level.h @@ -56,14 +56,6 @@ static inline pte_t native_ptep_get_and_clear(pte_t *xp) #define pte_pfn(x) (pte_val(x) >> PAGE_SHIFT) /* - * All present pages are kernel-executable: - */ -static inline int pte_exec_kernel(pte_t pte) -{ - return 1; -} - -/* * Bits 0, 6 and 7 are taken, split up the 29 bits of offset * into this range: */ diff --git a/include/asm-x86/pgtable-3level.h b/include/asm-x86/pgtable-3level.h index 62bb06575d5..62a1ffbc878 100644 --- a/include/asm-x86/pgtable-3level.h +++ b/include/asm-x86/pgtable-3level.h @@ -19,14 +19,6 @@ #define pud_bad(pud) 0 #define pud_present(pud) 1 -/* - * All present pages with !NX bit are kernel-executable: - */ -static inline int pte_exec_kernel(pte_t pte) -{ - return !(pte_val(pte) & _PAGE_NX); -} - /* Rules for using set_pte: the pte being assigned *must* be * either not present or in a state where the hardware will * not attempt to update the pte. In places where this is diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h index 75a656e6b3f..2f3d90807ef 100644 --- a/include/asm-x86/pgtable.h +++ b/include/asm-x86/pgtable.h @@ -139,6 +139,7 @@ static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_RW; } static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; } static inline int pte_huge(pte_t pte) { return pte_val(pte) & _PAGE_PSE; } +static inline int pte_exec(pte_t pte) { return !(pte_val(pte) & _PAGE_NX); } static inline int pmd_large(pmd_t pte) { return (pmd_val(pte) & (_PAGE_PSE|_PAGE_PRESENT)) == |