diff options
| author | Sean Christopherson <[email protected]> | 2021-05-04 10:17:21 -0700 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2021-05-07 06:06:15 -0400 |
| commit | 85d0011264da24be08ae907d7f29983a597ca9b1 (patch) | |
| tree | 337769183d8aad311c142ecef9eee3bbecb36225 /lib/mpi/mpi-sub-ui.c | |
| parent | 8aec21c04caa2000f91cf8822ae0811e4b0c3971 (diff) | |
KVM: x86: Emulate RDPID only if RDTSCP is supported
Do not advertise emulation support for RDPID if RDTSCP is unsupported.
RDPID emulation subtly relies on MSR_TSC_AUX to exist in hardware, as
both vmx_get_msr() and svm_get_msr() will return an error if the MSR is
unsupported, i.e. ctxt->ops->get_msr() will fail and the emulator will
inject a #UD.
Note, RDPID emulation also relies on RDTSCP being enabled in the guest,
but this is a KVM bug and will eventually be fixed.
Fixes: fb6d4d340e05 ("KVM: x86: emulate RDPID")
Cc: [email protected]
Signed-off-by: Sean Christopherson <[email protected]>
Message-Id: <[email protected]>
Reviewed-by: Jim Mattson <[email protected]>
Reviewed-by: Reiji Watanabe <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-sub-ui.c')
0 files changed, 0 insertions, 0 deletions