Re: [PATCH] drm/i915: Make vm eviction uninterruptible

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On Mon, Apr 7, 2014 at 11:58 PM, Ben Widawsky <ben@xxxxxxxxxxxx> wrote:
> Blocking important fixes for a test case is harmful to customers of our
> software. I won't argue past that. If you won't take it as is, add it to the
> JIRA task like you said. I'll carry this one around with my dynamic page table
> allocations since you essentially can't do any real workloads with full PPGTT
> without this (assuming you have signals). I'd venture to even say existing
> tests can hit it with full PPGTT turned on.

A duct-tape bugfix like this would be justified in late -rc, where the
risk for disabling full ppgtt would probably outweight this hack.
Earlier I'd opt of simply re-disbaling full ppgtt again if we can't
come up with a properly understood fix and testcase for it in time.

But atm full ppgtt is disabled, and we have a task-list with 10
subtasks on internal JIRA to knock down. Without that I wouldn't
recommend anyone to try to ship full ppgtt in production, especially
not our internal customers.

I've updated the relevant subtask JIRA with details.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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