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DocBook/drm: Improve flow of GPU/CPU coherence sentence

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Signed-off-by: Michael Witten <mfwitten@gmail.com>
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Michael Witten 2011-08-29 16:00:55 +00:00
parent 0c2d91a80a
commit 2d43f5d667
1 changed files with 3 additions and 2 deletions
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Documentation/DocBook/drm.tmpl
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@ -720,8 +720,9 @@ void intel_crt_init(struct drm_device *dev)
provides memory to back each object. When mapped into the GTT
or used in a command buffer, the backing pages for an object are
flushed to memory and marked write combined so as to be coherent
with the GPU. Likewise, when the GPU finishes rendering to an object,
if the CPU accesses it, it must be made coherent with the CPU's view
with the GPU. Likewise, if the CPU accesses an object after the GPU
has finished rendering to the object, then the object must be made
coherent with the CPU's view
of memory, usually involving GPU cache flushing of various kinds.
This core CPU&lt;-&gt;GPU coherency management is provided by the GEM
set domain function, which evaluates an object's current domain and