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| author | H. Peter Anvin <hpa@linux.intel.com> | 2014-02-13 16:34:30 +0100 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-02-13 16:50:25 +0100 |
| commit | 03bbd596ac04fef47ce93a730b8f086d797c3021 (patch) | |
| tree | 763dcbb9bab4588640392226e06789bc688db565 /arch/x86/mm/fault.c | |
| parent | compiler/gcc4: Make quirk for asm_volatile_goto() unconditional (diff) | |
| download | linux-03bbd596ac04fef47ce93a730b8f086d797c3021.tar.xz linux-03bbd596ac04fef47ce93a730b8f086d797c3021.zip | |
x86, smap: Don't enable SMAP if CONFIG_X86_SMAP is disabled
If SMAP support is not compiled into the kernel, don't enable SMAP in
CR4 -- in fact, we should clear it, because the kernel doesn't contain
the proper STAC/CLAC instructions for SMAP support.
Found by Fengguang Wu's test system.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Link: http://lkml.kernel.org/r/20140213124550.GA30497@localhost
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@vger.kernel.org> # v3.7+
Diffstat (limited to 'arch/x86/mm/fault.c')
0 files changed, 0 insertions, 0 deletions