Changeset 49275 in vbox for trunk/src/VBox/VMM/VMMR0

Timestamp:

Oct 24, 2013 1:06:04 PM (11 years ago)

Author:

vboxsync

Message:

VMM/HMVMXR0, HMSVMR0: Guest-FPU pre-load optimization.

Location:

trunk/src/VBox/VMM/VMMR0

Files:

• HMSVMR0.cpp (modified) (2 diffs)
• HMVMXR0.cpp (modified) (2 diffs)

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

@@ -2913 +2913 @@
     hmR0SvmInjectPendingEvent(pVCpu, pCtx);
 
+    if (   pVCpu->hm.s.fUseGuestFpu
+        && !CPUMIsGuestFPUStateActive(pVCpu))
+    {
+        CPUMR0LoadGuestFPU(pVM, pVCpu, pCtx);
+        VMCPU_HMCF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
+    }
+
     /* Load the state shared between host and guest (FPU, debug). */
     PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
@@ -4966 +4973 @@
         VMCPU_HMCF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
         STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowNM);
+        pVCpu->hm.s.fUseGuestFpu = true;
     }
     else

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

@@ -7831 +7831 @@
     VMCPU_HMCF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
 #endif
+
+    if (   pVCpu->hm.s.fUseGuestFpu
+        && !CPUMIsGuestFPUStateActive(pVCpu))
+    {
+        CPUMR0LoadGuestFPU(pVM, pVCpu, pMixedCtx);
+        Assert(pVCpu->hm.s.vmx.fUpdatedGuestState & HMVMX_UPDATED_GUEST_CR0);
+        VMCPU_HMCF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
+    }
 
     /*
@@ -10706 +10714 @@
         VMCPU_HMCF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
         STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowNM);
+        pVCpu->hm.s.fUseGuestFpu = true;
     }
     else