[Bug 91844] [HSW Regression] intel_do_flush_locked failed: Invalid argument

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91844

--- Comment #3 from Chris Wilson <chris at chris-wilson.co.uk> ---
Looks like the length field of the MI_STORE_REGISTER_MEM is incorrect in the
cmdparser as the next instruction it parses is the target address. The
regression is likely to be

commit f1afe24f0e736b9d7f2275e2b1504af3fe612f2a
Author: Arun Siluvery <arun.siluvery at linux.intel.com>
Date:   Tue Aug 4 16:22:20 2015 +0100

    drm/i915: Change SRM, LRM instructions to use correct length

which ignored the length bias when setting the fixed length. %$£$!

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