[Bug 110674] Crashes / Resets From AMDGPU / Radeon VII

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun Aug 11 22:31:24 UTC 2019


--- Comment #74 from Sylvain BERTRAND <sylvain.bertrand at gmail.com> ---
Forcing the memory clock and voltage is not enough: the dc[en]x memory requests
should be given also the highest priority in the arbiter block. I don't recall
how it interacts with the dc[en]x watermarks, but they should be "disabled" or
"maxed out". Basically, whatever the 3D/compute/(vcn|vce/uvd) load, the dc[en]x
will always come first (due to the realtime nature of display data transmission
to monitors). Oh and of course, the smu/smc should not manage the dc[en]x. Very
probably, there are some smc/smu commands to do that.

If the GPU did not crash with dpm disabled as a whole, the proper way to
proceed would be to start from there and step by step add dpm features and see
when it starts crashing. It's not a small task since dpm code paths may be
scattered all over the code.

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