Changeset 97146 in vbox

Timestamp:

Oct 14, 2022 6:07:33 AM (2 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

154119

Message:

VMM/CPUM: Nested VMX: bugref:10092 Don't advertise large (1G) page support for EPT PDEs to guests since it's not yet implemented.

File:

• trunk/src/VBox/VMM/VMMR3/CPUM.cpp (modified) (2 diffs)

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

@@ -1559 +1559 @@
         uint8_t const  fMemTypeWb        = RT_BF_GET(uHostMsr, VMX_BF_EPT_VPID_CAP_MEMTYPE_WB);
         uint8_t const  f2MPage           = RT_BF_GET(uHostMsr, VMX_BF_EPT_VPID_CAP_PDE_2M);
-        uint8_t const  f1GPage           = RT_BF_GET(uHostMsr, VMX_BF_EPT_VPID_CAP_PDPTE_1G);
         uint8_t const  fInvept           = RT_BF_GET(uHostMsr, VMX_BF_EPT_VPID_CAP_INVEPT);
         /** @todo Nested VMX: Support accessed/dirty bits, see @bugref{10092#c25}. */
@@ -1574 +1573 @@
                                       | RT_BF_MAKE(VMX_BF_EPT_VPID_CAP_MEMTYPE_WB,                        fMemTypeWb)
                                       | RT_BF_MAKE(VMX_BF_EPT_VPID_CAP_PDE_2M,                            f2MPage)
-                                      | RT_BF_MAKE(VMX_BF_EPT_VPID_CAP_PDPTE_1G,                          f1GPage)
+                                    //| RT_BF_MAKE(VMX_BF_EPT_VPID_CAP_PDPTE_1G,                          0)
                                       | RT_BF_MAKE(VMX_BF_EPT_VPID_CAP_INVEPT,                            fInvept)
                                     //| RT_BF_MAKE(VMX_BF_EPT_VPID_CAP_ACCESS_DIRTY,                      0)