On 19/01/2018 10:09, Chris Wilson wrote:
Quoting Tvrtko Ursulin (2018-01-19 10:00:05)
From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Setting up the workaround batch buffers can fail either due programming
errors which will be caught in development, or by the inability to
allocate a 4k object and pin it in GGTT at runtime.
Since this is highly unlikely, and it is not deterministic to allow driver
operation to continue with unknown status of workarounds, it is better to
fail engine initialization explicitly under those circumstances.
Not entirely. Failing the driver load leaves the system without a
display / console. Disabling GPU execution is one response, but that
is likely to happen if the w/a requirement was severe enough.
We are not expecting to see an -EIO at this point in the init sequence
and all other errors abort the driver load.
Fair enough, I did not think about deeper consequences but only assumed
we would run without one engine. Assumptions assumptions!
Regards,
Tvrtko
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