Changeset 49403 in vbox for trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp

Timestamp:

Nov 7, 2013 4:22:51 AM (11 years ago)

Author:

vboxsync

Message:

VMM/HMVMXR0: Fixed DPC latency issue on Windows hosts.

File:

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

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

@@ -8987 +8987 @@
     HMVMX_VALIDATE_EXIT_HANDLER_PARAMS();
     STAM_COUNTER_INC(&pVCpu->hm.s.StatExitExtInt);
-    /* 32-bit Windows hosts (4 cores) has trouble with this; causes higher interrupt latency. */
-#if HC_ARCH_BITS == 64
-    Assert(ASMIntAreEnabled());
-    if (pVCpu->CTX_SUFF(pVM)->hm.s.vmx.fUsePreemptTimer)
+    /* Windows hosts (32-bit and 64-bit) have DPC latency issues. See @bugref{6853}. */
+    if (VMMR0ThreadCtxHooksAreRegistered(pVCpu))
         return VINF_SUCCESS;
-#endif
     return VINF_EM_RAW_INTERRUPT;
 }