[RFC PATCH v2 8/9] i386/sev: Replace LAUNCH_FINISH ioctl with sev library equivalent

[Tyler Fanelli <tfanelli@redhat.com>]

The LAUNCH_FINISH ioctl finishes the guest launch flow and transitions
the guest into a state ready to be run.

If this API ioctl call fails, fw_error will be set accordingly.

Signed-off-by: Tyler Fanelli <tfanelli@redhat.com>
---
 target/i386/sev.c | 38 ++++++++++++++++----------------------
 1 file changed, 16 insertions(+), 22 deletions(-)

diff --git a/target/i386/sev.c b/target/i386/sev.c
index 38a90d4f00..764a89d3a4 100644
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -785,35 +785,29 @@ static Notifier sev_machine_done_notify = {
     .notify = sev_launch_get_measure,
 };
 
-static void
-sev_launch_finish(SevGuestState *sev)
-{
-    int ret, error;
-
-    trace_kvm_sev_launch_finish();
-    ret = sev_ioctl(sev->sev_fd, KVM_SEV_LAUNCH_FINISH, 0, &error);
-    if (ret) {
-        error_report("%s: LAUNCH_FINISH ret=%d fw_error=%d '%s'",
-                     __func__, ret, error, fw_error_to_str(error));
-        exit(1);
-    }
-
-    sev_set_guest_state(sev, SEV_STATE_RUNNING);
-
-    /* add migration blocker */
-    error_setg(&sev_mig_blocker,
-               "SEV: Migration is not implemented");
-    migrate_add_blocker(sev_mig_blocker, &error_fatal);
-}
-
 static void
 sev_vm_state_change(void *opaque, bool running, RunState state)
 {
     SevGuestState *sev = opaque;
+    int ret, fw_error;
+    KVMState *s = kvm_state;
 
     if (running) {
         if (!sev_check_state(sev, SEV_STATE_RUNNING)) {
-            sev_launch_finish(sev);
+            trace_kvm_sev_launch_finish();
+            ret = sev_launch_finish(s->vmfd, &fw_error);
+            if (ret) {
+                error_report("%s: LAUNCH_FINISH ret=%d fw_error=%d '%s'",
+                             __func__, ret, fw_error,
+                             fw_error_to_str(fw_error));
+                exit(1);
+            }
+
+            sev_set_guest_state(sev, SEV_STATE_RUNNING);
+
+            // add migration blocker.
+            error_setg(&sev_mig_blocker, "SEV: Migration is not implemented");
+            migrate_add_blocker(sev_mig_blocker, &error_fatal);
         }
     }
 }
-- 
2.40.1