On 05/09/17 06:57, Chris Wilson wrote:
Quoting Chris Wilson (2017-08-21 15:55:34)
Quoting Michel Thierry (2017-08-18 18:23:42)
The corruption in CSB mmio reads we were seeing has been tracked down to
incorrectly touching forcewake of all domains, following an engine reset.
It is still a mistery why we only catched this in Broxton, since it
could happen in any platform.
With that fix already merged, commit 4055dc75d6b5 ("drm/i915: Stop
touching forcewake following a gen6+ engine reset"), lets try to enable
per-engine resets in Broxton one more time.
This reverts commit f188258bde0f ("drm/i915: Disable per-engine reset for
Broxton").
Cc: Chris Wilson <[email protected]>
Signed-off-by: Michel Thierry <[email protected]>
My bxt has survived about 72 hours of hang testing, which is far more
than it was able to previously.
Acked-by: Chris Wilson <[email protected]>
Tested-by: Chris Wilson <[email protected]>
Uh oh, seemingly just hit it again...
Was it because the CSBs were 0's?
A couple of times I saw a spurious CSB event (0x12 - preempted &
complete), after an already 'complete' event. That was also hitting the
assert because the ctx-id would be 'wrong'. I think we could ignore the
0x12 event and it will continue.
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