Re: [Xen-devel] RFC: Still TODO for 4.2?

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Fri, Jan 06, 2012 at 11:37:14AM -0400, Konrad Rzeszutek Wilk wrote:
> On Wed, Jan 04, 2012 at 01:57:28PM -0600, Wei Huang wrote:
> > On 01/04/2012 01:43 PM, Pasi K?rkk?inen wrote:
> > >On Wed, Jan 04, 2012 at 01:21:46PM -0600, Wei Huang wrote:
> > >>>>Has anybody got anything else? I'm sure I've missed stuff. Are there any
> > >>>>must haves e.g. in the paging/sharing spaces?
> > >>>>
> > >>>- What's the status of Nested Hardware Virtualization?
> > >>>I remember some email saying Intel vmx-on-vmx has some performance 
> > >>>issues,
> > >>>and amd svm-on-svm works better..
> > >>>
> > >>>
> > >>>- Also there's a bunch of VGA passthru related patches,
> > >>>that I once volunteered to collect/rebase/cleanup/repost myself,
> > >>>but I still haven't had time for that :(
> > >>Since there were quite a lot of interest on this subject, should we
> > >>document it in a separate wiki for working combinations (like
> > >>hypervisor, dom0, gfx card, driver version, tricks, etc)?
> > >>
> > >I actually once started writing down that kind of stuff:
> > >http://wiki.xen.org/xenwiki/XenVGAPassthroughTestedAdapters.html
> > >
> > >Feel free to contribute :)
> > >
> > >There's also:
> > >http://wiki.xen.org/xenwiki/XenVGAPassthrough
> > Thanks for sharing. I will contribute my findings as needed. BTW, do you 
> > need my VBIOS loading patches (sent long time ago) for AMD GPU? It is a 
> 
> Yes! Thought I haven't figured out yet how to extract the AMD GPU BIOS
> from the card. I've been able to pass in a Radeon 4870 to an Win 7 HVM
> guest and it works nicely.. the first time. After I shut down the guest
> it just never works again :-(
> 

Hmm.. I wonder if this would work:

cd /sys/bus/pci/devices/0000:01:05.0
sudo sh -c "echo 1 > rom"
sudo sh -c "cat rom > ~/bios.rom"


-- Pasi


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