Re: Problem with drm-radeon-testing commit - drm/ttm: Avoid conflicting reserve_memtype during ttm_tt_set_page_caching.

[Andy Furniss <andyqos@ukfsn.org>]

Andy Furniss wrote:

> db78e27de7e29a6db6be7caf607cf803d84094aa is first bad commit

I have confirmed by running both todays and yesterdays heads with and 
without that commit reverted that it is the one causing the problem.

Another test I tried was with agpmode=-1. This does avoid the problem, 
but unfortunately it is useless as a workaround for me as game perf 
other than openarena has always been poor using pcie gart.

eg. Nexuiz timedemo demos/demo1

KMS agpmode=4

result 1910 frames 70.4830000 seconds 27.0987330 fps, one-second fps 
min/avg/max: 19 28 47

KMS agpmode=-1 (or UMS with either gart)

result 1910 frames 254.2660000 seconds 7.5118183 fps, one-second fps 
min/avg/max: 4 10 36

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