diff options
| author | Hou Wenlong <houwenlong.hwl@antgroup.com> | 2022-03-02 16:15:14 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-04-02 12:34:46 +0300 |
| commit | a836839cbfe60dc434c5476a7429cf2bae36415d (patch) | |
| tree | 4d2ce58464b10cd528e7fa4c00dd001460e0e470 /arch/x86/kvm/kvm_emulate.h | |
| parent | e644896f5106aa3f6d7e8c7adf2e4dc0fce53555 (diff) | |
| download | linux-a836839cbfe60dc434c5476a7429cf2bae36415d.tar.xz | |
KVM: x86/emulator: Emulate RDPID only if it is enabled in guest
When RDTSCP is supported but RDPID is not supported in host,
RDPID emulation is available. However, __kvm_get_msr() would
only fail when RDTSCP/RDPID both are disabled in guest, so
the emulator wouldn't inject a #UD when RDPID is disabled but
RDTSCP is enabled in guest.
Fixes: fb6d4d340e05 ("KVM: x86: emulate RDPID")
Signed-off-by: Hou Wenlong <houwenlong.hwl@antgroup.com>
Message-Id: <1dfd46ae5b76d3ed87bde3154d51c64ea64c99c1.1646226788.git.houwenlong.hwl@antgroup.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/kvm_emulate.h')
| -rw-r--r-- | arch/x86/kvm/kvm_emulate.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/kvm_emulate.h b/arch/x86/kvm/kvm_emulate.h index 39eded2426ff..a2a7654d8ace 100644 --- a/arch/x86/kvm/kvm_emulate.h +++ b/arch/x86/kvm/kvm_emulate.h @@ -226,6 +226,7 @@ struct x86_emulate_ops { bool (*guest_has_long_mode)(struct x86_emulate_ctxt *ctxt); bool (*guest_has_movbe)(struct x86_emulate_ctxt *ctxt); bool (*guest_has_fxsr)(struct x86_emulate_ctxt *ctxt); + bool (*guest_has_rdpid)(struct x86_emulate_ctxt *ctxt); void (*set_nmi_mask)(struct x86_emulate_ctxt *ctxt, bool masked); |