[Bug 94697] [BSW] igt / gem_reloc_vs_gpu / interruptible-hang fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94697

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 821ed7df6e2a1dbae243caebcfe21a0a4329fca0
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Sep 9 14:11:53 2016 +0100

    drm/i915: Update reset path to fix incomplete requests

    Update reset path in preparation for engine reset which requires
    identification of incomplete requests and associated context and fixing
    their state so that engine can resume correctly after reset.

    The request that caused the hang will be skipped and head is reset to the
    start of breadcrumb. This allows us to resume from where we left-off.
    Since this request didn't complete normally we also need to cleanup elsp
    queue manually. This is vital if we employ nonblocking request
    submission where we may have a web of dependencies upon the hung request
    and so advancing the seqno manually is no longer trivial.

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