Changeset 45513 in vbox

Timestamp:

Apr 12, 2013 10:12:08 AM (12 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

84985

Message:

VMMR0/HMVMXR0: Event injection, don't need to re-clear the field everytime.

File:

• trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp

@@ -5893 +5893 @@
         Assert(!TRPMHasTrap(pVCpu));
         AssertRCReturn(rc, rc);
-        return rc;
-    }
-
-    /* Clear the VM-entry interruption info. if we're not injecting anything; prevents any stale injection. */
-    rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_ENTRY_INTERRUPTION_INFO, 0);
-    AssertRCReturn(rc, rc);
+    }
+
+    /*
+     * There's no need to clear the entry-interruption information field here if we're not injecting anything. VT-x clears the
+     * valid bit on every VM-exit. See Intel spec. 24.8.3 "VM-Entry Controls for Event Injection".
+     */
     return rc;
 }