WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] Re: [drm:r100_ring_test] *ERROR* radeon: ring test faile

On Tue, Oct 27, 2009 at 01:00:19PM -0400, Konrad Rzeszutek Wilk wrote:
> On Tue, Oct 27, 2009 at 05:46:51PM +0200, Pasi Kärkkäinen wrote:
> > On Wed, Oct 21, 2009 at 02:31:30PM -0400, Konrad Rzeszutek Wilk wrote:
> > > > I updated the pv_ops dom0 git tree to the latest 2.6.31.4 tree as of
> > > > today, and also applied your ttm.patch.
> > > > 
> > > > Modesetting works now, and there are no drm/radeon errors.
> > > 
> > > Thank you for testing it.
> > > 
> > 
> > Btw are you going to post this for inclusion in drm/ttm trees?
> 
> I am not really comfortable with it. It has the same drawbacks
> as the fix for the drm_scatter, where we blindly assume
> phys_to_bus(virt_to_phys(X)) will give us the same value as
> what dma_alloc_coherent provides. We should save that bus address
> somewhere...
> 
> Saving it somewhere (perhaps in some of the structs the drm_ttm allocates)
> could do it. But we should probably differentiate between memory
> that is being allocated for DMA transfers vs other things so that
> we don't over-exercise the dma_alloc_coherent. Thought maybe
> the memory returned via drm_tt calls are only used for DMA transfers.
>

Ok..

> We can figure this out.  Pasi, I don't have a modesetting working machine,
> but you do. Can you compile your pv_ops with the fix I provided earlier,
> along with enabling CONFIG_DMA_API_DEBUG=y. Once mode-setting is turned
> on and your machine is humming along (maybe even run glxgears), compile
> the attached module and load it. You should get a kernel dump
> off all devices that are using the DMA buffers. Can you e-mail me that back
> please?
> 

Yeah, I'll do that and get back to you.

-- Pasi



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

<Prev in Thread] Current Thread [Next in Thread>