[Intel-gfx] [PATCH 10/16] drm/i915: Retire requests before disabling pagefaults

[Keith Packard]

On Thu, 12 May 2011 22:17:18 +0100, Chris Wilson <chris at chris-wilson.co.uk> wrote:

> As we cannot wait upon an object to be released by the GPU once we have
> disabled pagefaults, process any pending retirements first in the hope
> that we move any potential relocations off the active list.

This seems to indicate a problem in user space. In any hot-path code,
user space should already have correctly computed the relocation
values and so the kernel should not have to map and re-write the value.

Kernel relocations are a requirement of the architecture, but not
something we should hit in practice once the application has gotten
itself running in a steady state.

-- 
keith.packard at intel.com
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