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| author | Bandan Das <bsd@redhat.com> | 2015-06-11 02:05:33 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-07-10 09:49:27 -0700 |
| commit | aa0b8c72f5c1e0208bfafb383b535bdc9d3b2c6b (patch) | |
| tree | b5fb39f4b64586847c6baa164050ab1d054d20c6 /net/can/af_can.c | |
| parent | 9d281572f2be11afa36e1534da43890cb9a130cc (diff) | |
| download | lwn-aa0b8c72f5c1e0208bfafb383b535bdc9d3b2c6b.tar.gz lwn-aa0b8c72f5c1e0208bfafb383b535bdc9d3b2c6b.zip | |
KVM: nSVM: Check for NRIPS support before updating control field
commit f104765b4f81fd74d69e0eb161e89096deade2db upstream.
If hardware doesn't support DecodeAssist - a feature that provides
more information about the intercept in the VMCB, KVM decodes the
instruction and then updates the next_rip vmcb control field.
However, NRIP support itself depends on cpuid Fn8000_000A_EDX[NRIPS].
Since skip_emulated_instruction() doesn't verify nrip support
before accepting control.next_rip as valid, avoid writing this
field if support isn't present.
Signed-off-by: Bandan Das <bsd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/can/af_can.c')
0 files changed, 0 insertions, 0 deletions