Changeset 96825 in vbox for trunk/src/VBox/VMM/VMMR3

Timestamp:

Sep 22, 2022 6:02:40 AM (2 years ago)

Author:

vboxsync

Message:

VMM/CPUM: Nested VMX: bugref:10092 Removed unnecessary zero'ing of already zero'ed virtual-VMX CPU-state on VM init.

File:

• trunk/src/VBox/VMM/VMMR3/CPUM.cpp (modified) (1 diff)

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

@@ -1103 +1103 @@
         AssertCompile(sizeof(pCtx->hwvirt.vmx.abVirtApicPage) == VMX_V_VIRT_APIC_PAGES * X86_PAGE_SIZE);
         AssertCompile(sizeof(pCtx->hwvirt.vmx.abVirtApicPage) == VMX_V_VIRT_APIC_SIZE);
-
-        /*
-         * Zero out all allocated pages (should compress well for saved-state).
-         */
-        /** @todo r=bird: this is and always was unnecessary - they are already zeroed. */
-        RT_ZERO(pCtx->hwvirt.vmx.Vmcs);
-        RT_ZERO(pCtx->hwvirt.vmx.ShadowVmcs);
-        RT_ZERO(pCtx->hwvirt.vmx.abVmreadBitmap);
-        RT_ZERO(pCtx->hwvirt.vmx.abVmwriteBitmap);
-        RT_ZERO(pCtx->hwvirt.vmx.aEntryMsrLoadArea);
-        RT_ZERO(pCtx->hwvirt.vmx.aExitMsrStoreArea);
-        RT_ZERO(pCtx->hwvirt.vmx.aExitMsrLoadArea);
-        RT_ZERO(pCtx->hwvirt.vmx.abMsrBitmap);
-        RT_ZERO(pCtx->hwvirt.vmx.abIoBitmap);
-        RT_ZERO(pCtx->hwvirt.vmx.abVirtApicPage);
     }
 }