linux-kernel - Re: Revert 737a3bb9416ce2a7c7a4170852473a4fcc9c67e8 ?

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Date:	Wed, 13 Apr 2011 14:27:51 +0200
From:	Gabriel Paubert <paubert@...m.es>
To:	Michel Dänzer <michel@...nzer.net>
Cc:	dri-devel@...ts.freedesktop.org, Dave Airlie <airlied@...il.com>,
	Greg KH <greg@...ah.com>, linuxppc-dev@...ts.ozlabs.org,
	LKML <linux-kernel@...r.kernel.org>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
Subject: Re: Revert 737a3bb9416ce2a7c7a4170852473a4fcc9c67e8 ?

On Wed, Apr 13, 2011 at 02:12:16PM +0200, Michel Dänzer wrote:
> On Mit, 2011-04-13 at 09:59 +0200, Gabriel Paubert wrote: 
> > On Tue, Apr 12, 2011 at 07:29:22PM +0200, Michel Dänzer wrote:
> > > On Die, 2011-04-12 at 14:00 +0200, Gabriel Paubert wrote:
> > > > On Tue, Apr 12, 2011 at 01:46:10PM +0200, Michel Dänzer wrote:
> > > > > > 
> > > > > > With no_wb=1 the driver goes a bit further but the X server ends
> > > > > > up in an infinite ioctl loop and the logs are: 
> > > > > 
> > > > > Which ioctl does it loop on? Please provide the Xorg.0.log file as well.
> > > > 
> > > > From memory, the code was 0x64, which is DRM_RADEON_GEM_WAIT_IDLE.
> > > 
> > > Note that it's normal for this ioctl to be called every time before the
> > > GPU accessible pixmap memory is accessed by the CPU. Unless the ioctl
> > > always returns an error, this may not indicate a problem on its own. 
> > 
> > It seems to be an infinite loop, always returning EINTR because
> > of regular SIGALRM delivery.
> 
> That does sound like the GPU locks up. Do you get any messages in dmesg
> about lockups and attempts to reset the GPU at any time?

No.

	Gabriel
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