Re: [Xen-devel] kernel mode setting

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Wed, Feb 10, 2010 at 10:45:52AM -0500, Michael D Labriola wrote:
> Well, here's what I've done so far.  In a fit of rage aimed towards the 
> lameness of the nv driver, I cherry-picked all the drm commits from the 
> official nouveau git tree into my xen/master checkout.  And it semi-works. 
>  Baremetal it looks good for a few minutes then X gets corrupted.  Under 
> Xen 3.4.2, X locks up before anything is even painted to the screen.  If I 
> force the xorg nouveau driver to use software rendering, my system appears 
> to be perfectly stable with good 2d support.  My compiled upstream nouveau 
> tree works perfectly (although the hardware acceleration is slow).
> 
> Now, it was late at night and I was bleary eyed... and that's a TON of 
> commits to get merged in a code base I've never looked at before...  and I 
> GUESSED at which commits to apply... so I'm encouraged that anything 
> worked at all.  :-)
> 
> Now I'm trying to decide if the X lockup under Xen is my fault (mangled a 
> merge conflict, missed a commit, etc), or whether something in the 3.4.2 
> hypervisor in just plain incompatible with KMS DRM drivers.  I suppose I 
> can try getting a Xen 4.0-rc build installed and see if the behavior 
> changes...
> 
> And there's also the potential to try getting it to work under xen/next... 
> although I'm not so sure that that would be wise at this point.

It does not have the backends in yet, so you can't launch guests yet :-(

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