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

[Wei Huang <wei.huang2@xxxxxxx>]

On 01/06/2012 09:37 AM, 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 :-(
This is a known issue which should be addressed for 4.2. I remember 
several persons reported this problem.
> > dilemma for several reasons:  it doesn't always work; sometimes it can
> > screw up main display while passthru 2nd GPUs. Plus the recent Catalyst
> > driver seems very stable even without these patches. But Wei Wang told
> > me that he needs them for some of his cards.
> > > -- Pasi
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-devel


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