On Wed, 17 Feb 2016 22:41:53 +0100 Jens Zimmermann <zimmermannjens...@gmail.com> wrote:
> Hello guys! > > I have a Windows 10 VM with GPU passsthrough working for around 2 months > now and while there were no problems in the very beginning as far as I can > tell, soon after the VM started to freeze my Linux sometimes after I shut > it down. > The strange thing is that it does not happen every time. It seems like it > usually happens when the VM was running for quite some time like an hour or > two. > I thought it may be the Windows shut down which is by default some kind of > hibernate, so I shut down Windows by using the command "shutdown /s /t0", > but that did not help. I also tried force stopping the VM, that led to a > freeze as well. > > I presume the error is caused by Linux not being able to integrate the > virtual/passed through hardware into the system again somehow. Perhaps it's > the memory since the freezes usually happen when the VM was running for > some time, but this is just a wild guess, I am no linux expert at all. > > This is journalctl of the most recent freeze, VM was started at 20:13 and > shut down at 21:09, followed by a freeze: http://pastebin.com/mwQsFsKB > In comparison this time it did not freeze, start at 21:33, finishes at > 21:55: http://pastebin.com/YGPnVPBD > > My setup: i7-5820k, ASRock x99 Extreme 4, 16GB RAM, nvidia 210 & 750 Ti, > two monitors, mice and keyboards, Manjaro 15.12 with kernel 4.1, qemu > 2.4.1-2, libvirt 1.3.1-2, virt-manager 1.3.2-2 > qemu xml: http://pastebin.com/WPupqDEv > > I would be glad to provide you more information, just tell me what you want > and how I can get it. > > I really appreciate any suggestion, I am out of ideas now. I'd be suspicious of any devices that you're assigning that gets re-bound to host drivers when the VM is shutdown. I see from the XML that you're not only assigning the GPU audio, but 00:1b.0 on the system as well, which I'd guess is the onboard audio. You can bind all the assigned devices with virsh nodedev-detach and then set managed='no' in the xml to make sure they don't get re-attached to host drivers. _______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
