[Bug 105064] GPU Hang with single-channel RAM configuration

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105064

--- Comment #2 from Chris Wilson <chris at chris-wilson.co.uk> ---
It completed the CS interrupt following seqno 0x00bd22f7, but the context
switch (following ELSP) did not restart on the new context. ~o~ I'm not sure if
a bisect will reveal anything more than a timing change.

Initial guess is that this issue is related to the one fixed in

commit ba74cb10c775c839f6e1d0fabd1e772eabd9c43f
Author: Michel Thierry <michel.thierry at intel.com>
Date:   Mon Nov 20 12:34:58 2017 +0000

    drm/i915/execlists: Delay writing to ELSP until HW has processed the
previou
s write

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