Re: [Xen-users] GPU passthrough with xen 4.2.1 on ubuntu 12.10

[Matthias <matthias.kannenberg@xxxxxxxxxxxxxx>]

Haha, since the discussion moved to XCP and this is not really my area
i didn't read your last message. The patch from the thread you
mentioned is basically the same then the one I provided..

Did you also tried to do secondary passthrough with the patch applied?

Cause primary passthrough didn't work for me either with the patch,
but secondary was fixed..

2013/3/12 Matthias <matthias.kannenberg@xxxxxxxxxxxxxx>:
> Hi,
>
> to fix the atikmeq.sys bug, you can try two things:
>
> 1) Use upstream qemu. For this, just add:
>
> device_model_version = 'qemu-xen'
> device_model_override = '/usr/lib/xen/bin/qemu-system-i386'
>
> to your domU config file. Note that there is currently a bug that the
> domU won't start when duing vga passthrough with more then 4GB memory
> assigned, so better use some less..
>
> 2) If you want to have more then 4GB memory, you can patch the
> traditional qemu. This is a bit more complicated cause the qemu stuff
> is download through the build and can't be patched right away. Also
> stopping in mid build, patching and continuing at least for me caused
> some problems, so doing a full build, patch, cleanup and build again
> is the safer route:
>
> git clone -b staging git://xenbits.xen.org/xen.git xen-unstable-staging
> cd xen-unstable-staging
> ./configure --disable-stubdom
> make -j12 world
> git apply --check /path/to/xen-unstable-atipassthrough.patch
> git apply /path/to/xen-unstable-atipassthrough.patch
> make -j12 clean
> make -j12 world
> Now do your usual install.. some use the standard, i prefer creating a 
> debball..
>
> Some Notes:
> - I use the staging branch from xen-unstable, but this is not exactly
> necessary for the patch, you can use master just as fine
> - the j12 is for multithreading and you should use double your core
> number.. since i got 6 cpu cores, it's 12 for me..
> - the patch i have attached is originally from Greg
> (http://lists.xen.org/archives/html/xen-devel/2012-12/msg00009.html),
> so credit goes to him, i only cleaned it up for xen-unstable. Also,
> the patch itself was for providing primary passthrough with ATI cards,
> but i found it fixing my ati 0x116 bluescreen..
> - due to an insufficiancy in the patch, stubdom would not build
> correctly, so you have to disable it
>
> Please report back if the patch fixes your bluescreen for more
> argumentation to bring this patch upstream.. :)  (@Greg: that's why i
> cc'ed you. hope you don't mind the noise)
>
> Hope it helps!

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