Changeset 21972 in vbox for trunk/src/VBox/VMM/VMMR0

Timestamp:

Aug 5, 2009 9:27:37 AM (16 years ago)

Author:

vboxsync

Message:

Skip faulting wrmsr for TPR updates.

File:

• trunk/src/VBox/VMM/VMMR0/HWSVMR0.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMR0/HWSVMR0.cpp

@@ -2347 +2347 @@
             &&  (pCtx->eax & 0xff) != u8LastTPR)
         {
+            Log(("SVM: Faulting MSR_K8_LSTAR write with new TPR value %x\n", pCtx->eax & 0xff));
+
             /* Our patch code uses LSTAR for TPR caching. */
             rc = PDMApicSetTPR(pVCpu, pCtx->eax & 0xff);
             AssertRC(rc);
+
+            /* Skip the instruction and continue. */
+            pCtx->rip += 2;     /* wrmsr = [0F 30] */
+
+            /* Only resume if successful. */
+            STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
+            goto ResumeExecution;
         }