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| author | Andreas Herrmann <herrmann.der.user@googlemail.com> | 2010-04-27 14:13:48 +0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2010-05-14 03:21:20 +0400 |
| commit | f01487119dda3d9f58c9729c7361ecc50a61c188 (patch) | |
| tree | bbd1d01429950207716337fbbd9e9f356560258c /mm | |
| parent | b0c4d952a158a6a2547672cf4fc9d55e415410de (diff) | |
| download | linux-f01487119dda3d9f58c9729c7361ecc50a61c188.tar.xz | |
x86, amd: Check X86_FEATURE_OSVW bit before accessing OSVW MSRs
If host CPU is exposed to a guest the OSVW MSRs are not guaranteed
to be present and a GP fault occurs. Thus checking the feature flag is
essential.
Cc: <stable@kernel.org> # .32.x .33.x
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
LKML-Reference: <20100427101348.GC4489@alberich.amd.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions