Changeset 8900 in vbox for trunk/src/VBox/VMM

Timestamp:

May 16, 2008 3:18:42 PM (17 years ago)

Author:

vboxsync

Message:

Some updates

File:

• trunk/src/VBox/VMM/VMMR0/HWSVMR0.cpp (modified) (3 diffs)

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

@@ -252 +252 @@
     /* Program the control fields. Most of them never have to be changed again. */
     /* CR0/3/4 reads must be intercepted, our shadow values are not necessarily the same as the guest's. */
+    /* Note: CR8 reads will refer to V_TPR, so no need to catch them. */
     /** @note CR0 & CR4 can be safely read when guest and shadow copies are identical. */
-    pVMCB->ctrl.u16InterceptRdCRx = RT_BIT(0) | RT_BIT(3) | RT_BIT(4) | RT_BIT(8);
+    pVMCB->ctrl.u16InterceptRdCRx = RT_BIT(0) | RT_BIT(3) | RT_BIT(4);
 
     /*
@@ -276 +277 @@
                                     | SVM_CTRL1_INTERCEPT_SMI
                                     | SVM_CTRL1_INTERCEPT_INIT
-                                    | SVM_CTRL1_INTERCEPT_CR0           /** @todo redundant?  */
                                     | SVM_CTRL1_INTERCEPT_RDPMC
                                     | SVM_CTRL1_INTERCEPT_CPUID
@@ -303 +303 @@
     Log(("pVMCB->ctrl.u32InterceptCtrl2 = %x\n", pVMCB->ctrl.u32InterceptCtrl2));
 
-    /* Virtualize masking of INTR interrupts. */
+    /* Virtualize masking of INTR interrupts. (reads/writes from/to CR8 go to the V_TPR register) */
     pVMCB->ctrl.IntCtrl.n.u1VIrqMasking = 1;