Extract the logic from qemuDomainControllerDefPostParse().
The code is mostly unchanged, but there's a subtle difference:
the piix3-uhci has been moved from the top of the chunk to the
bottom. This is because the original code set cont->model
directly, which made it okay to start with a suboptimal default
and subsequently overwrite it with a better one; now that we
return the selected value instead, we need to make sure that
we only ever consider piix3-uhci if everything else has failed.
Signed-off-by: Andrea Bolognani <abologna@xxxxxxxxxx>
---
src/qemu/qemu_domain.c | 100 +++++++++++++++++++++++------------------
1 file changed, 56 insertions(+), 44 deletions(-)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 7475fb4f39..09f572b0b5 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -4151,6 +4151,61 @@ qemuDomainDefaultSCSIControllerModel(const virDomainDef *def,
}
+static int
+qemuDomainDefaultUSBControllerModel(const virDomainDef *def,
+ const virDomainControllerDef *cont,
+ virQEMUCaps *qemuCaps,
+ unsigned int parseFlags)
+{
+ /* Pick a suitable default model for the USB controller if none
+ * has been selected by the user and we have the qemuCaps for
+ * figuring out which controllers are supported.
+ *
+ * We rely on device availability instead of setting the model
+ * unconditionally because, for some machine types, there's a
+ * chance we will get away with using the legacy USB controller
+ * when the relevant device is not available.
+ *
+ * See qemuBuildControllersCommandLine() */
+
+ if (ARCH_IS_S390(def->os.arch)) {
+ if (cont->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE) {
+ /* set the default USB model to none for s390 unless an
+ * address is found */
+ return VIR_DOMAIN_CONTROLLER_MODEL_USB_NONE;
+ }
+ } else if (ARCH_IS_PPC64(def->os.arch)) {
+ /* To not break migration we need to set default USB controller
+ * for ppc64 to pci-ohci if we cannot change ABI of the VM.
+ * The nec-usb-xhci or qemu-xhci controller is used as default
+ * only for newly defined domains or devices. */
+ if ((parseFlags & VIR_DOMAIN_DEF_PARSE_ABI_UPDATE) &&
+ virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_QEMU_XHCI)) {
+ return VIR_DOMAIN_CONTROLLER_MODEL_USB_QEMU_XHCI;
+ } else if ((parseFlags & VIR_DOMAIN_DEF_PARSE_ABI_UPDATE) &&
+ virQEMUCapsGet(qemuCaps, QEMU_CAPS_NEC_USB_XHCI)) {
+ return VIR_DOMAIN_CONTROLLER_MODEL_USB_NEC_XHCI;
+ } else if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_PCI_OHCI)) {
+ return VIR_DOMAIN_CONTROLLER_MODEL_USB_PCI_OHCI;
+ } else {
+ /* Explicitly fallback to legacy USB controller for PPC64. */
+ return -1;
+ }
+ } else if (def->os.arch == VIR_ARCH_AARCH64) {
+ if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_QEMU_XHCI))
+ return VIR_DOMAIN_CONTROLLER_MODEL_USB_QEMU_XHCI;
+ else if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_NEC_USB_XHCI))
+ return VIR_DOMAIN_CONTROLLER_MODEL_USB_NEC_XHCI;
+ }
+
+ /* Default USB controller is piix3-uhci if available. */
+ if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_PIIX3_USB_UHCI))
+ return VIR_DOMAIN_CONTROLLER_MODEL_USB_PIIX3_UHCI;
+
+ return -1;
+}
+
+
static int
qemuDomainDefAddDefaultDevices(virQEMUDriver *driver,
virDomainDef *def,
@@ -5640,50 +5695,7 @@ qemuDomainControllerDefPostParse(virDomainControllerDef *cont,
case VIR_DOMAIN_CONTROLLER_TYPE_USB:
if (cont->model == VIR_DOMAIN_CONTROLLER_MODEL_USB_DEFAULT && qemuCaps) {
- /* Pick a suitable default model for the USB controller if none
- * has been selected by the user and we have the qemuCaps for
- * figuring out which controllers are supported.
- *
- * We rely on device availability instead of setting the model
- * unconditionally because, for some machine types, there's a
- * chance we will get away with using the legacy USB controller
- * when the relevant device is not available.
- *
- * See qemuBuildControllersCommandLine() */
-
- /* Default USB controller is piix3-uhci if available. */
- if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_PIIX3_USB_UHCI))
- cont->model = VIR_DOMAIN_CONTROLLER_MODEL_USB_PIIX3_UHCI;
-
- if (ARCH_IS_S390(def->os.arch)) {
- if (cont->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE) {
- /* set the default USB model to none for s390 unless an
- * address is found */
- cont->model = VIR_DOMAIN_CONTROLLER_MODEL_USB_NONE;
- }
- } else if (ARCH_IS_PPC64(def->os.arch)) {
- /* To not break migration we need to set default USB controller
- * for ppc64 to pci-ohci if we cannot change ABI of the VM.
- * The nec-usb-xhci or qemu-xhci controller is used as default
- * only for newly defined domains or devices. */
- if ((parseFlags & VIR_DOMAIN_DEF_PARSE_ABI_UPDATE) &&
- virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_QEMU_XHCI)) {
- cont->model = VIR_DOMAIN_CONTROLLER_MODEL_USB_QEMU_XHCI;
- } else if ((parseFlags & VIR_DOMAIN_DEF_PARSE_ABI_UPDATE) &&
- virQEMUCapsGet(qemuCaps, QEMU_CAPS_NEC_USB_XHCI)) {
- cont->model = VIR_DOMAIN_CONTROLLER_MODEL_USB_NEC_XHCI;
- } else if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_PCI_OHCI)) {
- cont->model = VIR_DOMAIN_CONTROLLER_MODEL_USB_PCI_OHCI;
- } else {
- /* Explicitly fallback to legacy USB controller for PPC64. */
- cont->model = -1;
- }
- } else if (def->os.arch == VIR_ARCH_AARCH64) {
- if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_QEMU_XHCI))
- cont->model = VIR_DOMAIN_CONTROLLER_MODEL_USB_QEMU_XHCI;
- else if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_NEC_USB_XHCI))
- cont->model = VIR_DOMAIN_CONTROLLER_MODEL_USB_NEC_XHCI;
- }
+ cont->model = qemuDomainDefaultUSBControllerModel(def, cont, qemuCaps, parseFlags);
}
/* forbid usb model 'qusb1' and 'qusb2' in this kind of hyperviosr */
if (cont->model == VIR_DOMAIN_CONTROLLER_MODEL_USB_QUSB1 ||
--
2.43.0
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