On Fri, Jun 19, 2015 at 09:16:09PM +0200, Daniel Vetter wrote: > We've never figured out the magic trick to make irq vs. seqno > updates coherent, only tricks to make it work. And since > > commit 094f9a54e35500739da185cdb78f2e92fc379458 > Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Date: Wed Sep 25 17:34:55 2013 +0100 > > drm/i915: Fix __wait_seqno to use true infinite timeouts > > we automatically fall back to an irq augmented with polling scheme > after the first missed interrupt. There's really nothing else we can > do, hence tune down the message to informational level. It's still > useful for users in case it reliable preceedes a hard system hang. > > v2: Use NOTICE since it might be of value for bug reports (Chris). > > Cc: Mark Janes <mark.a.janes@xxxxxxxxx> > Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx> Now all we need to is to save the GPU state to the pstore in the picoseconds before a hard hang, and we'll be sorted. Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
