[vfio-users] Is windows 10 supported using intel IGD passthrough

[Alex Williamson]

On Tue, Jan 31, 2017 at 7:22 PM, Chris Anderson <chris.andersonc at yandex.com>
wrote:

> Hi
>
> I am not sure if the Intel IGD is actually using VFIO but I haven't been
> able to find much information elsewhere.
>
> I am trying to get Windows 10 to run using the IGD on a haswell a HD 4600
> device in UEFI mode and qemu.
> I have a configration that boots up Fedora and Ubuntu live CDs with mode
> setting. There is nothing display until the i915 driver is loaded on the
> guest which is expected. I have a couple of questions tho, as I cannot get
> windows 10 to boot:
>
> Do I need to specify the bios? I have tried getting the bios using the
> intel 01.org site but that bios is only in an older kerne and it is a VGA
> video bios. I am using pure UEFI.
>
> The windows install has the windows drivers working as I have taken the
> image from the same machine that I installed it on but it refuses to boot.
> I tried enabling the QXL video card on a different PCI slot (-vga wont do
> with qemu 2.8) and I got video out, but crashes when the IGD driver was
> loaded. How is it possible to debug this in windows, as nothing appears in
> the event log.
>

http://git.qemu.org/?p=qemu.git;a=blob;f=docs/igd-assign.txt

Haswell is only supported in legacy mode, which requires guest firmware
support which is only present in SeaBIOS, not OVMF.  Windows 10 should work
fine, be sure to use the ignore_msrs module option for kvm if you get
bsods.  Thanks,

Alex
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