But what if seabios is used instead of OVMF ?
--------------------------------------------
On Sun, 8/14/16, Nicolas Roy-Renaud <nicolas.roy-renau...@ens.etsmtl.ca> wrote:
Subject: Re: [vfio-users] Troubleshooting PCI Pass-through
To: "gerson moises" <grsnmoi...@yahoo.com>
Cc: vfio-users@redhat.com
Date: Sunday, August 14, 2016, 10:21 AM
Make sure to quote what's already been said next
time. Makes it
more conveinient to follow.
It's pretty well guaranteed that a 500
series GeForce does not support
UEFI. AFAIK, there's not a terribly high success rate
with these cards
either. The 600 series are generally what I consider the
bottom end of
working reasonably well. Otherwise there's not really
enough
information in your report to provide any specific advice.
Thanks,
Alex
I don't think there's much to report,
unfortunately.
The problem is that VFIO passthroughs are made
possible by a
number of features and protocols introduced in the
UEFI spec,
which wasn't really needed on GPUs or anywhere
back in 2010, when
the GTX 500 series was released. When Windows 8
introduced secure
boot, UEFI support accross the board became a
requirement for most
OEM PCs, so the vast majority of the hardware relased
after that
point supports it. Since secure boot had been making
the news for
a few months before that, I'm guessing the
hardware manufacturers
had also been given the heads up, so a number of 600
series card
probably support it as well, like Alex said. Don't
quote me on
that, though, I'm looking things up as I go.
If you really want to be sure on whether or not your
GPU is UEFI
compatible and you've already tried looking up the
exact model on
TechPowerup's
database (it's not perfect, everything
listed for my card
says it's not EFI compatible), see if you can boot
on a version of
windows with EFI support (Windows 7+). If GPU-Z
detects your BIOS as UEFI
compatible, then you're in luck, but I
wouldn't count on it.
The point is, that card most probably won't work
as a guest card.
You could use it on the host, but you'd have to
get a new card for
the actual passthrough.
-Nicolas
On 2016-08-12 15:14,
gerson moises
wrote:
Dear Mr. Alex WIlliamson,
I have asked before about problems using Ubuntu and Windows
as guests for PCI Pass-through.
As Mr. Alex said, the success rate of GTX 570 cards is not
high. However, I would like to know how can I make a
detailed troubleshooting in this case for report purposes, I
mean is there a way I can find the cause of the problem by
checking KVM or kernel logs ? I am still a beginner in this
area.
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