fix(host): don't hide kvm cpu feature on nested virt (#15579)

pkg/hostman/guestman/arch/arch.go

@@ -33,13 +33,12 @@ type Arch interface {
 }
 
 type KVMGuestInstance interface {
-	HasGpu() bool
 	IsOldWindows() bool
 	GetOsName() string
 
 	GetKernelVersion() string
 	CpuMax() (uint, error)
-	IsEnabledNestedVirt() bool
+	IsNestedVirt() bool
 	IsKvmSupport() bool
 }
 

pkg/hostman/guestman/arch/x86.go

@@ -132,7 +132,10 @@ func (x86 *X86) GenerateCpuDesc(cpus uint, s KVMGuestInstance) (*desc.SGuestCpu,
 	if err != nil {
 		return nil, err
 	}
-	hideKVM := !s.IsEnabledNestedVirt() || s.HasGpu()
+	var hideKVM = true
+	if s.IsNestedVirt() {
+		hideKVM = false
+	}
 
 	var hostCPUPassthrough = options.HostOptions.HostCpuPassthrough
 	var isCPUIntel = sysutils.IsProcessorIntel()
@@ -171,7 +174,7 @@ func (x86 *X86) GenerateCpuDesc(cpus uint, s KVMGuestInstance) (*desc.SGuestCpu,
 			}
 		}
 
-		if !hideKVM {
+		if hideKVM {
 			features["kvm"] = false
 		}
 	} else {

pkg/hostman/guestman/qemu-kvmhelper.go

@@ -115,7 +115,7 @@ func (s *SKVMGuestInstance) IsKvmSupport() bool {
 	return s.manager.GetHost().IsKvmSupport()
 }
 
-func (s *SKVMGuestInstance) IsEnabledNestedVirt() bool {
+func (s *SKVMGuestInstance) IsNestedVirt() bool {
 	return s.manager.GetHost().IsNestedVirtualization()
 }
 
@@ -733,15 +733,6 @@ func (s *SKVMGuestInstance) startMemCleaner() error {
 	return nil
 }
 
-func (s *SKVMGuestInstance) HasGpu() bool {
-	for i := 0; i < len(s.Desc.IsolatedDevices); i++ {
-		if s.Desc.IsolatedDevices[i].DevType != api.USB_TYPE {
-			return true
-		}
-	}
-	return false
-}
-
 func (s *SKVMGuestInstance) gpusHasVga() bool {
 	manager := s.manager.GetHost().GetIsolatedDeviceManager()
 	for i := 0; i < len(s.Desc.IsolatedDevices); i++ {