[vfio-users] [Qemu-discuss] vfio pass through only works once after reboot

[José Ramón Muñoz Pekkarinen]

	Hi,

	I'm afraid that passing a rom for a FuryX to an HD5670 might be a bad 
idea, but thanks for the suggestion. Only solution in my setup is to try to 
upgrade the gpu at some point and live with what I have for a while.

	José.

On Friday 04 September 2015 19:05:21 Abdulla Bubshait wrote:
> Hey Jose,
> 
> So I just verified that there is a romfile out from asus for the R9 FuryX
> that has UEFI support. You can download the rom itself from
> https://www.techpowerup.com/vgabios/174070/asus-r9furyx-4096-150712.html
> and load it up in qemu instead of the device's own romfile.
> 
> Unfortunately it doesn't solve the problem in my case.
> 
> I have figured out that the issue I am encountering is that the AMD drivers
> refuse to load if the guest is restarted or shut down without rebooting the
> host. Without a UEFI rom the GPU never displayed anything to the outputs,
> but with the UEFI rom the displays start up before the loading of the
> drivers, but when the drivers never load it reverts to generic Microsoft
> display drivers so you get a working low res display. In both cases the
> problem stems from AMD drivers not loading.
> 
> So I feel this might be a new AMD reset issue, where the card isn't
> reverting to a state that will allow the driver to load.
> 
> If you have any more luck getting the card to work in VFIO please tell me
> as I am still stuck in a once per reboot cycle state.
> 
> -Abdulla
> 
> On Fri, Sep 4, 2015 at 1:44 PM José Ramón Muñoz <koalinux at gmail.com> wrote:
> >         Hi,
> >         
> >         No way, is it so? I just noticed that I couldn't use OVMF because
> > 
> > of the
> > same... I just assumed that the card should have support for it... Oh
> > my...
> > 
> >         Thanks for that!
> >         
> >         José.
> > 
> > On Friday 04 September 2015 11:27:24 Alex Williamson wrote:
> > > On Fri, Sep 4, 2015 at 11:21 AM, Abdulla Bubshait <darkstego at gmail.com>
> > > 
> > > wrote:
> > > > I am running a Radeon R9 Fury X (Fiji) on windows guest (8.1 and 10)
> > 
> > OVMF
> > 
> > > ...
> > > 
> > > > Fiji doesn't have any UEFI code in its rom.
> > > 
> > > That's just irresponsible for a vendor to ship a card in 2015 without
> > 
> > UEFI
> > 
> > > support...  But you're sort of asking for problems trying to run an OVMF
> > > guest w/o UEFI support on the card.