[vfio-users] VM doesn't boot if I use GPU passthrough

[Ryan Flagler]

I was going to recommend you use UEFI, which is why I was asking. I've
personally had better luck getting things to pass through properly.

Is your VM down when you try to cat the rom? The GPU needs to be unused by
anything.

On Thu, Jan 28, 2016 at 4:00 PM Ruben Felgenhauer <
4felgenh at informatik.uni-hamburg.de> wrote:

> Well,
>
> when doing the 'cat rom > /tmp/image.rom' step, cat throws an E/A error
> and dmesg adds another line:
> [  282.690258] pci-stub 0000:01:00.0: Invalid ROM contents
> I was told that this step wasn't necessary since I was going to use BIOS
> anyway.
> Or does virt-manager start all machines with EFI?
>
> Best regards,
> Ruben
>
> Am 28.01.2016 um 21:48 schrieb Nicolas Roy-Renaud:
>
> I had a problem similar to what you're experiencing with my ASUS 970.
> Again, can you check whether vfio-pci logs any invalid rom errors in dmesg
> when you start your VM (or when you try to dump your firmware like Alex
> does here :
> http://vfio.blogspot.ca/2014/08/does-my-graphics-card-rom-support-efi.html
> )?
>
> On 2016-01-28 15:43, Ruben Felgenhauer wrote:
>
> E17505U-C GTX750TI-PH-2GD5
>
>
>
>
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