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authorPekka Enberg <penberg@cs.helsinki.fi>2009-04-21 11:39:27 +0300
committerIngo Molnar <mingo@elte.hu>2009-04-21 10:48:08 +0200
commit89388913f2c88a2cd15d24abab571b17a2596127 (patch)
tree2d3791f3fe4b844ba007371c2fe203b304e4c2cc /arch/x86/mm/init_64.c
parent8ecee4620e76aae418bfa0e8cc830e92cb559bbb (diff)
x86: unify noexec handling
This patch unifies noexec handling on 32-bit and 64-bit. [ Impact: cleanup ] Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> [ mingo@elte.hu: build fix ] LKML-Reference: <1240303167.771.69.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/init_64.c')
-rw-r--r--arch/x86/mm/init_64.c33
1 files changed, 0 insertions, 33 deletions
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 1753e8020df..a4e7846efb1 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -85,39 +85,6 @@ early_param("gbpages", parse_direct_gbpages_on);
pteval_t __supported_pte_mask __read_mostly = ~_PAGE_IOMAP;
EXPORT_SYMBOL_GPL(__supported_pte_mask);
-static int disable_nx __cpuinitdata;
-
-/*
- * noexec=on|off
- * Control non-executable mappings for 64-bit processes.
- *
- * on Enable (default)
- * off Disable
- */
-static int __init nonx_setup(char *str)
-{
- if (!str)
- return -EINVAL;
- if (!strncmp(str, "on", 2)) {
- __supported_pte_mask |= _PAGE_NX;
- disable_nx = 0;
- } else if (!strncmp(str, "off", 3)) {
- disable_nx = 1;
- __supported_pte_mask &= ~_PAGE_NX;
- }
- return 0;
-}
-early_param("noexec", nonx_setup);
-
-void __cpuinit check_efer(void)
-{
- unsigned long efer;
-
- rdmsrl(MSR_EFER, efer);
- if (!(efer & EFER_NX) || disable_nx)
- __supported_pte_mask &= ~_PAGE_NX;
-}
-
int force_personality32;
/*