diff --git a/pkg/compute/guestdrivers/kvm.go b/pkg/compute/guestdrivers/kvm.go
index 67ae21e812..2a2baf5702 100644
--- a/pkg/compute/guestdrivers/kvm.go
+++ b/pkg/compute/guestdrivers/kvm.go
@@ -850,10 +850,9 @@ func (self *SKVMGuestDriver) validateVGA(ovdi, ovga string, nvdi, nvga *string)
 
 func (self *SKVMGuestDriver) validateMachineType(machine string, osArch string) error {
 	var candidate []string
-	switch osArch {
-	case apis.OS_ARCH_AARCH64:
+	if apis.IsARM(osArch) {
 		candidate = []string{api.VM_MACHINE_TYPE_ARM_VIRT}
-	default:
+	} else {
 		candidate = []string{api.VM_MACHINE_TYPE_PC, api.VM_MACHINE_TYPE_Q35}
 	}
 	if !utils.IsInStringArray(machine, candidate) {
diff --git a/pkg/hostman/guestman/qemu-kvm.go b/pkg/hostman/guestman/qemu-kvm.go
index c1e957d198..f1cd118743 100644
--- a/pkg/hostman/guestman/qemu-kvm.go
+++ b/pkg/hostman/guestman/qemu-kvm.go
@@ -1663,6 +1663,10 @@ func (s *SKVMGuestInstance) generateDiskParams(disks []api.GuestdiskJsonDesc, is
 	firstDriver := make(map[string]bool)
 	for _, disk := range disks {
 		driver := disk.Driver
+		if isArm && (driver == DISK_DRIVER_IDE || driver == DISK_DRIVER_SATA) {
+			// unsupported configuration: IDE controllers are unsupported
+			driver = DISK_DRIVER_SCSI
+		}
 		if driver == DISK_DRIVER_SCSI || driver == DISK_DRIVER_PVSCSI {
 			if _, ok := firstDriver[driver]; !ok {
 				switch driver {
@@ -1670,7 +1674,7 @@ func (s *SKVMGuestInstance) generateDiskParams(disks []api.GuestdiskJsonDesc, is
 					// FIXME: iothread will make qemu-monitor hang
 					// REF: https://www.mail-archive.com/qemu-devel@nongnu.org/msg592729.html
 					// cmd += " -device virtio-scsi-pci,id=scsi,iothread=iothread0,num_queues=4,vectors=5"
-					cmd += " -device virtio-scsi-pci,id=scsi"
+					cmd += " -device virtio-scsi-pci,id=scsi,num_queues=4,vectors=5"
 				case DISK_DRIVER_PVSCSI:
 					cmd += " -device pvscsi,id=scsi"
 				}