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| author | Roedel, Joerg <Joerg.Roedel@amd.com> | 2011-05-19 11:13:39 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-05-20 12:57:18 +0200 |
| commit | d47cc0db8fd6011de2248df505fc34990b7451bf (patch) | |
| tree | a019570daeba6e6f9ad3410b9adf2d0c2760223b /net/netlabel | |
| parent | 257313b2a87795e07a0bdf58d0fffbdba8b31051 (diff) | |
| download | linux-d47cc0db8fd6011de2248df505fc34990b7451bf.tar.bz2 | |
x86, amd: Use _safe() msr access for GartTlbWlk disable code
The workaround for Bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=33012
introduced a read and a write to the MC4 mask msr.
Unfortunatly this MSR is not emulated by the KVM hypervisor
so that the kernel will get a #GP and crashes when applying
this workaround when running inside KVM.
This issue was reported as:
https://bugzilla.kernel.org/show_bug.cgi?id=35132
and is fixed with this patch. The change just let the kernel
ignore any #GP it gets while accessing this MSR by using the
_safe msr access methods.
Reported-by: Török Edwin <edwintorok@gmail.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Maciej Rutecki <maciej.rutecki@gmail.com>
Cc: Avi Kivity <avi@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: <stable@kernel.org> # .39.x
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'net/netlabel')
0 files changed, 0 insertions, 0 deletions