KVM: x86/emulator: Emulate RDPID only if it is enabled in guest

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2074832



commit a836839c
Author: Hou Wenlong <houwenlong.hwl@antgroup.com>
Date:   Wed Mar 2 21:15:14 2022 +0800

    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: fb6d4d34 ("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>

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>