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qemu_capabilities: Do not report USB as subsystem type if it is not available

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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@redhat.com>
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1759849
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Thomas Huth
2020-01-13 09:04:57 +01:00
committed by Michal Privoznik
parent 177fbcdfaa
commit bfd5f69d60
10 changed files with 12 additions and 10 deletions
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1
tests/domaincapsdata/qemu_2.11.0.s390x.xml
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@@ -167,7 +167,6 @@
<value>optional</value>
</enum>
<enum name='subsysType'>
<value>usb</value>
<value>pci</value>
<value>scsi</value>
</enum>