[vfio-users] QEMU / KVM VFIO ("no signal" message)

[Alex Williamson]

On Tue, Nov 3, 2015 at 12:31 PM, Leonardo Caldas <leonardo.caldas at xleox.org>
wrote:

> 2015-11-03 15:57 GMT-03:00 Alex Williamson <alex.l.williamson at gmail.com>:
>
>> On Tue, Nov 3, 2015 at 11:52 AM, Leonardo Caldas <
>> leonardo.caldas at xleox.org> wrote:
>>
>>> 2015-11-03 15:33 GMT-03:00 Alex Williamson <alex.l.williamson at gmail.com>
>>> :
>>>
>>>> Have you tested whether the GPU supports UEFI?
>>>> http://vfio.blogspot.com/2014/08/does-my-graphics-card-rom-support-efi.html
>>>>
>>>
>>>
>>> ./rom-parser GTX680.rom
>>> Valid ROM signature found @0h, PCIR offset 190h
>>>         PCIR: type 0 (x86 PC-AT), vendor: 10de, device: 1180, class:
>>> 030000
>>>         PCIR: revision 0, vendor revision: 1
>>>         Last image
>>>
>>> In fact I never made this test.. And as the page states, it was supposed
>>> to output twoo headers... I've got only one.
>>> It means that my GPU has no UEFI support', isn't it?
>>>
>>> Could you please suggest me which method I may use, considering this
>>> lack of support?
>>>
>>
>> Contact the GPU vendor for an update supporting UEFI or look through the
>> ROM database on techpowerup and see if you can find one.  It's worth
>> spending the time to make the card work with UEFI vs dealing with all the
>> problems of VGA arbitration.
>>
>
>
>
> Thank you very much for your reply.
>
> If I understood it correctly, there's only a Windows version of the file,
> so that it's not possible to flash it using only Linux tools?
>

If you can extract the ROM from the exe (wine?), you don't even need to
flash it, you can simply use the option romfile= for the QEMU vfio-pci
device.  It looks like you can already find these ROMs on techpowerup
though:


http://www.techpowerup.com/vgabios/index.php?architecture=NVIDIA&manufacturer=Gigabyte&model=GTX+680&interface=PCI-E&memType=&memSize=2048

Unfortunately, none of the ones that gigabyte claims are UEFI include the
UEFI image in the ROM.

Not that you really have the option, but I would not upgrade firmware for a
device in a VM, it's too risky.  You can look for ROMs from other vendors
for UEFI support, at your own risk of course.
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