https://github.com/torvalds/linux
Revision f01487119dda3d9f58c9729c7361ecc50a61c188 authored by Andreas Herrmann on 27 April 2010, 10:13:48 UTC, committed by H. Peter Anvin on 13 May 2010, 23:21:20 UTC
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>
1 parent b0c4d95
History
Tip revision: f01487119dda3d9f58c9729c7361ecc50a61c188 authored by Andreas Herrmann on 27 April 2010, 10:13:48 UTC
x86, amd: Check X86_FEATURE_OSVW bit before accessing OSVW MSRs
Tip revision: f014871
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