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    Subject[PATCH v4 5/5] KVM: SVM: Increase supported GHCB protocol version
    Date
    From: Brijesh Singh <brijesh.singh@amd.com>

    Now that KVM has basic support for version 2 of the GHCB specification,
    bump the maximum supported protocol version. The SNP specific functions
    are still missing, but those are only required when the Hypervisor
    supports running SNP guests.

    Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
    Signed-off-by: Joerg Roedel <jroedel@suse.de>
    ---
    arch/x86/kvm/svm/sev.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
    index 22523ec08a7b..d2e03dc72558 100644
    --- a/arch/x86/kvm/svm/sev.c
    +++ b/arch/x86/kvm/svm/sev.c
    @@ -2394,7 +2394,7 @@ static u64 ghcb_msr_cpuid_resp(u64 reg, u64 value)
    }

    /* The min/max GHCB version supported by KVM. */
    -#define GHCB_VERSION_MAX 1ULL
    +#define GHCB_VERSION_MAX 2ULL
    #define GHCB_VERSION_MIN 1ULL

    static u64 ghcb_msr_version_info(void)
    --
    2.33.0
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