Re: [libvirt] [PATCHv2 4/5] uuid: require smbios uuid and domain uuid to match

* src/conf/domain_conf.c (virDomainDefParseXML): Prefer sysinfo uuid over generating one, and if both uuids are present, require them to be identical. * src/qemu/qemu_conf.c (qemuBuildSmbiosSystemStr): Allow skipping the uuid. (qemudBuildCommandLine): Adjust caller; <smbios mode=host/> must not use host uuid in place of guest uuid. --- The qemu developers pointed out that '-uuid xyz' and '-smbios type=1,uuid=xyz' both have the same effect. They argued that -uuid is deprecated, but it's easier for libvirt to always supply it. Meanwhile, they were clear that if both values were supplied, the two uuids had better be identical (current qemu favors -uuid over -smbios, but it's not guaranteed to stay that way in the future).