Re: [libvirt] [PATCH 1/1] Enable QEMU_CAPS_PCI_MULTIBUS capability for QEMU2.0 forward.

On 2014年04月09日 11:20, Eric Blake wrote: > On 04/08/2014 08:03 PM, Li Zhang wrote: >> From: Li Zhang <zhlcindy(a)linux.vnet.ibm.com&gt; >> >> For QEMU2.0 forward version, it supports PCI multiBUS. >> Currently, libvirt still disables it which causes an error >> "Bus 'pci' not found". >> >> Signed-off-by: Li Zhang <zhlcindy(a)linux.vnet.ibm.com&gt; >> --- >> src/qemu/qemu_capabilities.c | 3 +++ >> 1 file changed, 3 insertions(+) >> >> diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c >> index 2c8ec10..b49398f 100644 >> --- a/src/qemu/qemu_capabilities.c >> +++ b/src/qemu/qemu_capabilities.c >> @@ -3019,6 +3019,9 @@ virQEMUCapsInitQMPMonitor(virQEMUCapsPtr qemuCaps, >> if (qemuCaps->version >= 1006000) >> virQEMUCapsSet(qemuCaps, QEMU_CAPS_DEVICE_VIDEO_PRIMARY); >> + if (qemuCaps->version >= 2000000) >> + virQEMUCapsSet(qemuCaps, QEMU_CAPS_PCI_MULTIBUS); >> + > This is a version number check, which is bad. Is there a QMP command we > can issue that gives a more reliable answer of whether the feature is > present? > Hi Eric, I can't find any QMP command for MULTIBUS in QEMU. There is only one "query-pci" to list PCI bus and devices information.