Changeset 79649 in vbox

Timestamp:

Jul 10, 2019 4:55:06 AM (6 years ago)

Author:

vboxsync

Message:

VMM/HMSVMR0: Fix StatTscOffset and StatTscIntercept.

File:

• trunk/src/VBox/VMM/VMMR0/HMSVMR0.cpp (modified) (2 diffs)

trunk/src/VBox/VMM/VMMR0/HMSVMR0.cpp

@@ -3345 +3345 @@
         pVmcb->ctrl.u64TSCOffset = uTscOffset;
         pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
-
-        STAM_COUNTER_INC(&pVCpu->hm.s.StatTscOffset);
-    }
-    else
-        STAM_COUNTER_INC(&pVCpu->hm.s.StatTscIntercept);
+    }
 
     /* Currently neither Hyper-V nor KVM need to update their paravirt. TSC
@@ -4569 +4565 @@
         pSvmTransient->fUpdateTscOffsetting = false;
     }
+
+    /* Record statistics of how often we use TSC offsetting as opposed to intercepting RDTSC/P. */
+    if (!(pVmcb->ctrl.u64InterceptCtrl & (SVM_CTRL_INTERCEPT_RDTSC | SVM_CTRL_INTERCEPT_RDTSCP)))
+        STAM_COUNTER_INC(&pVCpu->hm.s.StatTscOffset);
+    else
+        STAM_COUNTER_INC(&pVCpu->hm.s.StatTscIntercept);
 
     /* If we've migrating CPUs, mark the VMCB Clean bits as dirty. */