diff options
| author | Bandan Das <bsd@redhat.com> | 2015-06-11 02:05:33 -0400 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2016-08-26 19:15:14 +0200 |
| commit | 21d2acfd842365eb21161a9630fdf03d7cb09fa0 (patch) | |
| tree | 8bd20f20928a2d459bc7014a6041bd89287869ac /include/linux/virtio_ring.h | |
| parent | ce27f50a836e7763c3fb3565cb81e322c3e19a8c (diff) | |
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>
Signed-off-by: Stefan Guendhoer <stefan@guendhoer.com>
Diffstat (limited to 'include/linux/virtio_ring.h')
0 files changed, 0 insertions, 0 deletions