On Fri, Dec 06, 2013 at 12:15:30PM +0100, Fabio Fantoni wrote: > Il 06/12/2013 11:50, Wei Liu ha scritto: > >On Fri, Dec 06, 2013 at 11:15:17AM +0100, Fabio Fantoni wrote: > >[...] > >>>>I not mean virtio disk/net but virtio-serial channels used for > >>>>example by spice vdagent. > >>>>The libxl implentation xen side is correct and on windows domUs > >>>>vdagent is working (I'm using it since 2 year). > >>>>On linux domUs I found that virtio ports under /dev are missed/not > >>>>created and I not understand why. > >>>That's probably unplugged by Xen platform PCI device. > >>> > >>>>Recently I tried also with xen_platform_pci=0 and the Konrad's patch > >>>>(xen/pvhvm: If xen_platform_pci=0 is set don't blow up) but to no > >>>>avail. > >>>> > >>>I haven't followed up that patch so I am not sure what's happening. > >>> > >>>Wei. > >>> > >>>>Thanks for any reply. > >>I did another tests, adding pci=nomsi to kernel boot option creates > >>virtio-serial ports correctly and vdagent works also on linux domUs, > >>I also tried to enable the xen platform and also in that case > >>vdagent works. > >>So the problem is only about msi. > >>Added xen-devel to cc. > >>Any ideas on how to fix permanently without adding pci=nomsi? > >> > >As I remember it I wrote a patch for QEMU to make it capable of > >injecting MSI interrupt in Xen long time ago so it should work fine. > > > >Wei. > > Is this? > http://git.qemu.org/?p=qemu.git;a=commit;h=f1dbf015dfb0aa7f66f710a1f1bc58b662951de2 > > thenis there a xen and/or qemu regression? > Yes that one. Not sure if it is a regression, because nobody ever tried to use virtio-serial in Xen AFAICT. If you find virtio-net / virtio-blk not working, then there's a problem. Wei. > > > >>Thanks for any reply. _______________________________________________ Spice-devel mailing list Spice-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/spice-devel