[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [Intel-gfx] [RFC][PATCH] gpu:drm:i915:intel_detect_pch: back to check devfn instead of check class type

Il 07/07/2014 19:54, Daniel Vetter ha scritto:
On Mon, Jul 07, 2014 at 04:57:45PM +0200, Paolo Bonzini wrote:
Il 07/07/2014 16:49, Daniel Vetter ha scritto:
So the correct fix to forward intel gpus to guests is indeed to somehow
fake the pch pci ids since the driver really needs them. Gross design, but
that's how the hardware works.

A way that could work for virtualization is this: if you find the card has a
magic subsystem vendor id, fetch the subsystem device id and use _that_ as
the PCH device id.

Would that work for you?

I guess for quemu it also depends upon what windows does since we can't
change that. If we care about that part. Another consideration is
supporting older kernels, if that's possible at all.

Yes, but right now it's more important to get something that's not too gross for the future, for both Linux and Windows. Hacks for existing guests can be done separately, especially since they might differ between Linux (check ISA bridge) and Windows (check 1f.0).


Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.