[vfio-users] kernel v4.2 VM failing with passthrough

[globalgorrilla at fastmail.fm]

Nope. Just starts, and stops immediately:

2015-08-13 23:05:33.068+0000: starting up
[snip qemu command which is same as before]
2015-08-13 23:05:37.071+0000: shutting down

On 08/13/2015 12:26 PM, Alex Williamson wrote:
> On Thu, 2015-08-13 at 12:22 -0700, globalgorrilla at fastmail.fm wrote:
>> Hi,
>>
>> VMs are terminating shortly after launch when passing through any Quadro
>> K2200 or R9 260X on 4.2.0-rc6, using 4.1.4 it's working perfectly.
>>
>> The VM will go to running and then terminate without ever seeing the
>> OVMF boot screen. I'm not seeing anything in dmesg output.
>>
>> It appears specific to the GPUs it seems as the I350-T4 VFs work fine on
>> a separate VM that uses only them in passthrough.
>>
>> I'm using libvirt 1.2.1, qemu 2.4, and OVMF.fd from edk2 (5c02fc) Aug
>> 10.
>>
>> /etc/default/grub:
>> intel_iommu=on iommu=pt iommu=1 pci=assign-busses
>>
>> /etc/modprobe.d/vfio-pci.conf
>> options vfio-pci
>> ids=1002:ffffffff:ffffffff:ffffffff:00030000:ffff00ff,1002:ffffffff:ffffffff:ffffffff:00040300:ffffffff,10de:ffffffff:ffffffff:ffffffff:00030000:ffff00ff,10de:ffffffff:ffffffff:ffffffff:00040300:ffffffff
>>
>> How is 4.2 working for others?
>>
>> I saw there was some refactoring in mtrr.c that got fixed in rc6.
>>
>> Anything changing that might be related to the issue I'm seeing? IRQ
>> handling?
>>
>
> Do you see anything in the libvirt
> log, /var/log/libvirt/qemu/$DOMAIN.log?
>