[vfio-users] Failed to mmap 0000:01:00.0 BAR 3. Performance may be slow

[Alex Williamson]

On Thu, 23 Aug 2018 23:35:34 +0200
Konrad Eisele <eiselekd at gmail.com> wrote:

> I gave the Nvidia 710b card a try:
> - booted with 2 cards, AMD primary, NVidia secondary
> - unbind noveau driver
> - use nvflash (see below) to dump nvidia vbios
> - rom-parser parser on it:
> Valid ROM signature found @600h, PCIR offset 190h
>        PCIR: type 0 (x86 PC-AT), vendor: 10de, device: 128b, class: 030000
>        PCIR: revision 0, vendor revision: 1
> Valid ROM signature found @fc00h, PCIR offset 1ch
>        PCIR: type 3 (EFI), vendor: 10de, device: 128b, class: 030000
>        PCIR: revision 3, vendor revision: 0
>                EFI: Signature Valid, Subsystem: Boot, Machine: X64
>        Last image
> 
> 
> However when I try to use nvidia_vbios_vfio_patcher.py I get an error:
> ...
> But actually I have no idea what the patcher actually does.
> Is it patching x86 vbios code?

I don't know what it's doing or supposed to do either, but it does say
in the readme that it's for Pascal and your card is Kepler, which is two
generations before Pascal.  I've never had any need for that script.
Thanks,

Alex