[Xen-devel] xen-unstable pci passthrough: bug in accounting assigned pci devices when assignment has failed

[Sander Eikelenboom <linux@xxxxxxxxxxxxxx>]

Hi Ian,

It was decided that the bug that domain creation does not fail on non 
assignable pci devices was deferred to 4.5.
(and it wouldn't prevent this bug anyhow when doing pci hotplug with xl 
pci-attach)

But there seems to be a bug in the error path:

root@creanuc:~# xl pci-assignable-list
0000:02:00.0

Now when i boot a VM with  pci=['00:19.0'] in it's config file ... which is not 
assignable:

root@creanuc:~# xl create /etc/xen/domU/router.hvm
Parsing config from /etc/xen/domU/router.hvm
libxl: error: libxl_pci.c:1060:libxl__device_pci_add: PCI device 0:0:19.0 is 
not assignable

That looks ok ... and the pci device is not visible / accessible in the guest 
...  but it seems the entry is still in xenstore nevertheless:

root@creanuc:~# xl pci-list router
Vdev Device
00.0 0000:00:19.0

--
Sander


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