Changeset 85769 in vbox for trunk/src/VBox/Main/src-server/HostImpl.cpp

Timestamp:

Aug 14, 2020 12:59:51 PM (4 years ago)

Author:

vboxsync

Message:

Main: bugref:9618 Added Main/API support for AMD-V Virtualized VMSAVE/VMLOAD hardware virtualization feature.

File:

• trunk/src/VBox/Main/src-server/HostImpl.cpp (modified) (8 diffs)

trunk/src/VBox/Main/src-server/HostImpl.cpp

@@ -217 +217 @@
                             fUnrestrictedGuestSupported,
                             fNestedHWVirtSupported,
+                            fVirtVmsaveVmload,
                             fRecheckVTSupported;
 
@@ -311 +312 @@
     m->fUnrestrictedGuestSupported = false;
     m->fNestedHWVirtSupported = false;
+    m->fVirtVmsaveVmload = false;
     m->fRecheckVTSupported = false;
 
@@ -375 +377 @@
                         if (fSVMFeaturesEdx & X86_CPUID_SVM_FEATURE_EDX_NESTED_PAGING)
                             m->fNestedPagingSupported = true;
+                        if (fSVMFeaturesEdx & X86_CPUID_SVM_FEATURE_EDX_VIRT_VMSAVE_VMLOAD)
+                            m->fVirtVmsaveVmload = true;
                     }
                 }
@@ -1149 +1153 @@
 
 /**
- * Updates fVTSupported, fNestedPagingSupported, fUnrestrictedGuestSupported and
- * fNestedHWVirtSupported with info from SUPR3QueryVTCaps().
+ * Updates fVTSupported, fNestedPagingSupported, fUnrestrictedGuestSupported,
+ * fVirtVmsaveVmload and fNestedHWVirtSupported with info from SUPR3QueryVTCaps().
  *
  * This is repeated till we successfully open the support driver, in case it
@@ -1182 +1186 @@
                                           ==            (  SUPVTCAPS_VT_X | SUPVTCAPS_NESTED_PAGING
                                                          | SUPVTCAPS_VTX_UNRESTRICTED_GUEST | SUPVTCAPS_VTX_VMCS_SHADOWING);
+        m->fVirtVmsaveVmload           = (fVTCaps & SUPVTCAPS_AMDV_VIRT_VMSAVE_VMLOAD) != 0;
         m->fRecheckVTSupported = false; /* No need to try again, we cached everything. */
     }
@@ -1204 +1209 @@
         case ProcessorFeature_UnrestrictedGuest:
         case ProcessorFeature_NestedHWVirt:
+        case ProcessorFeature_VirtVmsaveVmload:
             break;
         default:
@@ -1220 +1226 @@
                 || aFeature == ProcessorFeature_NestedPaging
                 || aFeature == ProcessorFeature_UnrestrictedGuest
-                || aFeature == ProcessorFeature_NestedHWVirt)
+                || aFeature == ProcessorFeature_NestedHWVirt
+                || aFeature == ProcessorFeature_VirtVmsaveVmload)
            )
         {
@@ -1252 +1259 @@
             case ProcessorFeature_NestedHWVirt:
                 *aSupported = m->fNestedHWVirtSupported;
+                break;
+
+            case ProcessorFeature_VirtVmsaveVmload:
+                *aSupported = m->fVirtVmsaveVmload;
                 break;