[Bug 96526] [APL] [BAT execlists] gem_exec_suspend basic-s4 GPU hang after resume

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96526

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[BSW / APL] [BAT execlists] |[APL] [BAT execlists]
                   |gem_exec_suspend basic-s4   |gem_exec_suspend basic-s4
                   |GPU hang after resume       |GPU hang after resume

--- Comment #18 from Chris Wilson <chris at chris-wilson.co.uk> ---
I'll take the partial victory.

commit 5ab57c7020697942ea15f45ad14c69cecb164329
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Jul 15 14:56:20 2016 +0100

    drm/i915: Flush logical context image out to memory upon suspend

    Before suspend, and especially before building the hibernation image, we
    need to context image to be coherent in memory. To do this we require
    that we perform a context switch to a disposable context (i.e. the
    dev_priv->kernel_context) - when that switch is complete, all other
    context images will be complete. This leaves the kernel_context image as
    incomplete, but fortunately that is disposable and we can do a quick
    fixup of the logical state after resuming.

But it looks like there's more fish in the ocean. Can you please attach the
latest error state?

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