[libvirt] [PATCH] Don't treat pci_system_init failure as fatal if no PCI bus is present

Xen PV domU's have no PCI bus. node_device_udev.c calls pci_system_init which looks for /sys/bus/pci. If it does not find /sys/bus/pci (which it won't in a Xen PV domU) it returns unsuccesfully (ENOENT), which libvirt considers fatal. This makes libvirt unusable in this environment, even though there are plenty of valid virtualisation options that work there (LXC, UML, and QEmu spring to mind) https://bugzilla.redhat.com/show_bug.cgi?id=709471 Signed-off-by: Soren Hansen <soren(a)linux2go.dk&gt; --- src/node_device/node_device_udev.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c index badf241..08ef856 100644 --- a/src/node_device/node_device_udev.c +++ b/src/node_device/node_device_udev.c @@ -1620,7 +1620,7 @@ static int udevDeviceMonitorStartup(int privileged) /* Ignore failure as non-root; udev is not as helpful in that * situation, but a non-privileged user won't benefit much * from udev in the first place. */ - if (privileged || errno != EACCES) { + if (errno != ENOENT && (privileged || errno != EACCES)) { char ebuf[256]; VIR_ERROR(_("Failed to initialize libpciaccess: %s"), virStrerror(pciret, ebuf, sizeof ebuf)); -- 1.7.5.4