Re: [PATCH 86/89] drm/i915: only reset media, blt, and render engines on GPU hangs

Daniel Vetter
2014-09-04T13:13:20Z

On Thu, Sep 04, 2014 at 01:29:06PM +0100, Damien Lespiau wrote:
> On Thu, Sep 04, 2014 at 03:03:27PM +0300, Jani Nikula wrote:
> > On Thu, 04 Sep 2014, Damien Lespiau <damien.lespiau@intel.com> wrote:
> > > From: Jesse Barnes <jbarnes@virtuousgeek.org>
> > >
> > > No need to mess with display.
> >
> > Why is this patch part of the skl enabling series? The commit message is
> > a bit thin on the details too...
>
> I did hesitate with this one, this is indeed orthogonal to SKL enabling
> and was just a shot in the dark.
>
> Jesse, do you mind if we just drop this one?

Afaik we only reset GT (i.e. media/blit) and not display on gen6+, at
least all the display stuff survives. This has been the case since roughly
g4x+, and we actually have a bunch of testcases now to verify that.
Specifically the crc vs reset tests will start to fail if anything in the
display block goes south.
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch