The command is used for finializing the SEV guest launch process.
Signed-off-by: Brijesh Singh <brijesh.singh@xxxxxxx>
---
arch/x86/kvm/svm.c | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 62c2b22..c108064 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -5921,6 +5921,38 @@ static int sev_launch_update_data(struct kvm *kvm, struct kvm_sev_cmd *argp)
return ret;
}
+static int sev_launch_finish(struct kvm *kvm, struct kvm_sev_cmd *argp)
+{
+ int i, ret;
+ struct sev_data_launch_finish *data;
+ struct kvm_vcpu *vcpu;
+
+ if (!sev_guest(kvm))
+ return -EINVAL;
+
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ /* launch finish */
+ data->handle = sev_get_handle(kvm);
+ ret = sev_issue_cmd(kvm, SEV_CMD_LAUNCH_FINISH, data, &argp->error);
+ if (ret)
+ goto err_1;
+
+ /* Iterate through each vcpus and set SEV KVM_SEV_FEATURE bit in
+ * KVM_CPUID_FEATURE to indicate that SEV is enabled on this vcpu
+ */
+ kvm_for_each_vcpu(i, vcpu, kvm) {
+ sev_init_vmcb(to_svm(vcpu));
+ svm_cpuid_update(vcpu);
+ }
+
+err_1:
+ kfree(data);
+ return ret;
+}
+
static int amd_memory_encryption_cmd(struct kvm *kvm, void __user *argp)
{
int r = -ENOTTY;
@@ -5940,6 +5972,10 @@ static int amd_memory_encryption_cmd(struct kvm *kvm, void __user *argp)
r = sev_launch_update_data(kvm, &sev_cmd);
break;
}
+ case KVM_SEV_LAUNCH_FINISH: {
+ r = sev_launch_finish(kvm, &sev_cmd);
+ break;
+ }
default:
break;
}
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