[vfio-users] BSOD with IGD passthrough (HD4000/4600)

[Manuel Ullmann]

Hm,

I have a HD 4600 in my i5 Haswell. It works fine since the ignore_msrs
hint. How do you boot your host system? If it is booted in UEFI mode,
does /proc/iomem contain the word BOOTFB prefixed by your gpu pci
address (on any boot)? In other words, have you fixed the BOOTFB
allocation issue, which seems to occur, when the EFI driver grabs the
boot GPU?
I would assume, that it is in CSM mode, because I couldn’t
even boot without clearing the GPU ram. However it could possibly
intervene in such a host configuration.

Best regards,
Manuel

Daimon Wang <daimon_swang at yahoo.com> writes:

> Yes, msrs ignored already, or you can't even install the Intel driver.
> Thank you, any way.
> Any other hints?
>
> Regards,
> Daimon
>
> On Thursday, December 22, 2016 10:03 PM, Alex Williamson
> <alex.williamson at redhat.com> wrote:
>
> On Thu, 22 Dec 2016 10:30:34 +0000 (UTC)
>
> Daimon Wang <daimon_swang at yahoo.com> wrote:
>
>> Hi, I'm trying IGD passthrough with both Intel HD 4000 and HD 4600.
> Everything is fine, the Win7_64 VM start successful with Intel driver
> installed, and Aero is enabled. However when I run PCMark05 or any
> real 3D wallpaper (windows 3D bubble is fine), I got a BSOD with "
> SYSTEM_SERVICE_EXCEPTION" from (IGDKMD64.SYS(code 3B). Is this a know
> issue or I'm missing any settings? (Since I got Aero enabled, most of
> basic settings should be ok)
>
> Add:
>
> options kvm ignore_msrs=1
>
> to a file in /etc/modprobe.conf.d/
>
> Thanks,
>
> Alex
>
>
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