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    Subject[Part2 PATCH v6 30/38] KVM: SVM: Add support for SEV LAUNCH_FINISH command
    Date
    The command is used for finializing the SEV guest launch process.

    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: Joerg Roedel <joro@8bytes.org>
    Cc: Borislav Petkov <bp@suse.de>
    Cc: Tom Lendacky <thomas.lendacky@amd.com>
    Cc: x86@kernel.org
    Cc: kvm@vger.kernel.org
    Cc: linux-kernel@vger.kernel.org
    Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
    ---
    arch/x86/kvm/svm.c | 23 +++++++++++++++++++++++
    1 file changed, 23 insertions(+)

    diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
    index 3ab2d4ae11ea..5ac290b845b9 100644
    --- a/arch/x86/kvm/svm.c
    +++ b/arch/x86/kvm/svm.c
    @@ -5973,6 +5973,26 @@ static int sev_launch_measure(struct kvm *kvm, struct kvm_sev_cmd *argp)
    return ret;
    }

    +static int sev_launch_finish(struct kvm *kvm, struct kvm_sev_cmd *argp)
    +{
    + struct kvm_sev_info *sev = &kvm->arch.sev_info;
    + struct sev_data_launch_finish *data;
    + int ret;
    +
    + if (!sev_guest(kvm))
    + return -ENOTTY;
    +
    + data = kzalloc(sizeof(*data), GFP_KERNEL);
    + if (!data)
    + return -ENOMEM;
    +
    + data->handle = sev->handle;
    + ret = sev_issue_cmd(kvm, SEV_CMD_LAUNCH_FINISH, data, &argp->error);
    +
    + kfree(data);
    + return ret;
    +}
    +
    static int svm_mem_enc_op(struct kvm *kvm, void __user *argp)
    {
    struct kvm_sev_cmd sev_cmd;
    @@ -5999,6 +6019,9 @@ static int svm_mem_enc_op(struct kvm *kvm, void __user *argp)
    case KVM_SEV_LAUNCH_MEASURE:
    r = sev_launch_measure(kvm, &sev_cmd);
    break;
    + case KVM_SEV_LAUNCH_FINISH:
    + r = sev_launch_finish(kvm, &sev_cmd);
    + break;
    default:
    r = -EINVAL;
    goto out;
    --
    2.9.5
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