• Tom Lendacky's avatar
    x86/CPU/AMD: Add the Secure Encrypted Virtualization CPU feature · 18c71ce9
    Tom Lendacky authored
    Update the CPU features to include identifying and reporting on the
    Secure Encrypted Virtualization (SEV) feature.  SEV is identified by
    CPUID 0x8000001f, but requires BIOS support to enable it (set bit 23 of
    MSR_K8_SYSCFG and set bit 0 of MSR_K7_HWCR).  Only show the SEV feature
    as available if reported by CPUID and enabled by BIOS.
    
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: "H. Peter Anvin" <hpa@zytor.com>
    Cc: Paolo Bonzini <pbonzini@redhat.com>
    Cc: "Radim Krčmář" <rkrcmar@redhat.com>
    Cc: Borislav Petkov <bp@suse.de>
    Cc: kvm@vger.kernel.org
    Cc: x86@kernel.org
    Cc: linux-kernel@vger.kernel.org
    Signed-off-by: default avatarTom Lendacky <thomas.lendacky@amd.com>
    Signed-off-by: default avatarBrijesh Singh <brijesh.singh@amd.com>
    Reviewed-by: default avatarBorislav Petkov <bp@suse.de>
    18c71ce9
scattered.c 2.19 KB