Changeset 102523 in vbox

Timestamp:

Dec 7, 2023 1:39:07 PM (12 months ago)

Author:

vboxsync

Message:

VMM/CPUM: bugref:10498 Enable MTRR storage without populating variable-range MTRRs.

Location:

trunk/src/VBox/VMM/VMMR3

Files:

• CPUM.cpp (modified) (1 diff)
• CPUMR3CpuId.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMR3/CPUM.cpp

@@ -4708 +4708 @@
                     pCtxMsrs->msr.MtrrFix4K_F0000  = 0x0505050505050505;
                     pCtxMsrs->msr.MtrrFix4K_F8000  = 0x0505050505050505;
-                    pCtxMsrs->msr.aMtrrVarMsrs[0].MtrrPhysBase = GCPhysFirst   | X86_MTRR_MT_WB;
-                    pCtxMsrs->msr.aMtrrVarMsrs[0].MtrrPhysMask = fMtrrPhysMask | MSR_IA32_MTRR_PHYSMASK_VALID;
+                    //pCtxMsrs->msr.aMtrrVarMsrs[0].MtrrPhysBase = GCPhysFirst   | X86_MTRR_MT_WB;
+                    //pCtxMsrs->msr.aMtrrVarMsrs[0].MtrrPhysMask = fMtrrPhysMask | MSR_IA32_MTRR_PHYSMASK_VALID;
                 }
                 LogRel(("CPUM: Initialized MTRRs (fMtrrPhysMask=%RGp GCPhysLast=%RGp)\n", fMtrrPhysMask, GCPhysLast));

trunk/src/VBox/VMM/VMMR3/CPUMR3CpuId.cpp

@@ -3287 +3287 @@
             /* Check if MTRR read+write support is enabled. */
             bool fEnableMtrrWrite;
-            rc = CFGMR3QueryBoolDef(pCpumCfg, "MTRRWrite", &fEnableMtrrWrite, false);
+            rc = CFGMR3QueryBoolDef(pCpumCfg, "MTRRWrite", &fEnableMtrrWrite, true);
             AssertRCReturn(rc, rc);
             if (fEnableMtrrWrite)