Attempt vmresume before launch on launch back

microsoft · Oct 28, 2024 · 3121244 · 3121244
1 parent 0eb0f5a
commit 3121244
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/SeaPkg/Core/Init/StmInit.c b/SeaPkg/Core/Init/StmInit.c
@@ -884,7 +884,11 @@ LaunchBack (
 
   SerializationLock = 0;
 
-  Rflags = AsmVmLaunch (Register);
+  Rflags = AsmVmResume (Register);
+  if (VmRead32 (VMCS_32_RO_VM_INSTRUCTION_ERROR_INDEX) == VmxFailErrorVmResumeWithNonLaunchedVmcs) {
+    DEBUG ((DEBUG_ERROR, "Calling AsmVmLaunch()\n"));
+    Rflags = AsmVmLaunch (Register);
+  }
 
   AcquireSpinLock (&mHostContextCommon.DebugLock);
   DEBUG ((DEBUG_ERROR, "!!!LaunchBack FAIL!!!\n"));