Re: [libvirt] [PATCH] qemu_capabilities: Do not report USB as subsystem type if it is not available

libvirt currently always reports that USB is available as a bus subsystem type when running "virsh domcapabilities". However, this is not always true, for example the qemu-system-s390x binary normally never has support for USB. Thus we should only report that USB is available if there is also a USB host controller available where we can attach USB devices. Reported-by: Sebastian Mitterle <smitterl(a)redhat.com&gt; Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1759849 Signed-off-by: Thomas Huth <thuth(a)redhat.com&gt; --- src/qemu/qemu_capabilities.c | 13 ++++++++++++- tests/domaincapsdata/qemu_2.10.0.s390x.xml | 1 - tests/domaincapsdata/qemu_2.11.0.s390x.xml | 1 - tests/domaincapsdata/qemu_2.12.0.s390x.xml | 1 - tests/domaincapsdata/qemu_2.7.0.s390x.xml | 1 - tests/domaincapsdata/qemu_2.8.0.s390x.xml | 1 - tests/domaincapsdata/qemu_2.9.0.s390x.xml | 1 - tests/domaincapsdata/qemu_3.0.0.s390x.xml | 1 - tests/domaincapsdata/qemu_4.0.0.s390x.xml | 1 - tests/domaincapsdata/qemu_4.2.0.s390x.xml | 1 - 10 files changed, 12 insertions(+), 10 deletions(-) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index da0c7a257f..261cca19a7 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -5674,10 +5674,21 @@ virQEMUCapsFillDomainDeviceHostdevCaps(virQEMUCapsPtr qemuCaps, VIR_DOMAIN_STARTUP_POLICY_OPTIONAL); VIR_DOMAIN_CAPS_ENUM_SET(hostdev->subsysType, - VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB, VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI, VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI); + if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_PIIX3_USB_UHCI) || + virQEMUCapsGet(qemuCaps, QEMU_CAPS_PIIX4_USB_UHCI) || + virQEMUCapsGet(qemuCaps, QEMU_CAPS_USB_EHCI) || + virQEMUCapsGet(qemuCaps, QEMU_CAPS_ICH9_USB_EHCI1) || + virQEMUCapsGet(qemuCaps, QEMU_CAPS_VT82C686B_USB_UHCI) || + virQEMUCapsGet(qemuCaps, QEMU_CAPS_PCI_OHCI) || + virQEMUCapsGet(qemuCaps, QEMU_CAPS_NEC_USB_XHCI) || + virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_QEMU_XHCI)) { + VIR_DOMAIN_CAPS_ENUM_SET(hostdev->subsysType, + VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB);