Changeset 92449 in vbox for trunk/include/VBox/vmm

Timestamp:

Nov 16, 2021 10:37:10 AM (3 years ago)

Author:

vboxsync

Message:

VMM/NEM: Add NEMHCGetFeatures() to return a bitmask of features supported by the native NEM backend and make use of it in CPUMR3CpuId to determine whether to pass through xsave/xrstor support to the guest, bugref:9044

File:

• trunk/include/VBox/vmm/nem.h (modified) (1 diff)

trunk/include/VBox/vmm/nem.h

@@ -187 +187 @@
  */
 VMM_INT_DECL(bool) NEMHCIsLongModeAllowed(PVMCC pVM);
+VMM_INT_DECL(uint32_t) NEMHCGetFeatures(PVMCC pVM);
 VMM_INT_DECL(int)  NEMImportStateOnDemand(PVMCPUCC pVCpu, uint64_t fWhat);
+
+/** @name NEM_FEAT_F_XXX - Features supported by the NEM backend
+ * @{ */
+/** NEM backend uses nested paging for the guest. */
+#define NEM_FEAT_F_NESTED_PAGING    RT_BIT(0)
+/** NEM backend uses full (unrestricted) guest execution. */
+#define NEM_FEAT_F_FULL_GST_EXEC    RT_BIT(1)
+/** NEM backend offers an xsave/xrstor interface. */
+#define NEM_FEAT_F_XSAVE_XRSTOR     RT_BIT(2)
+/** @} */
 
 VMM_INT_DECL(void) NEMHCNotifyHandlerPhysicalRegister(PVMCC pVM, PGMPHYSHANDLERKIND enmKind, RTGCPHYS GCPhys, RTGCPHYS cb);