Messages in this thread | | | Subject | Re: AMD graphics performance regression in 4.15 and later | From | Christian König <> | Date | Tue, 10 Apr 2018 08:48:04 +0200 |
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Am 09.04.2018 um 17:17 schrieb Jean-Marc Valin: > On 04/09/2018 05:42 AM, Christian König wrote: >> Backporting all the detection logic is to invasive, but you could just >> go into drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c and forcefull use the >> other code path. >> >> Just look out for "#ifdef CONFIG_SWIOTLB" checks and disable those. > Do you mean just taking the 4.15 code as is and replacing > "#ifdef CONFIG_SWIOTLB" with "#if 0" in > drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c or are you talking about using a > different version of drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c ?
Yes, exactly. The code then won't work any more on some ARMs or systems with more than 1TB of memory, but I don't think you care about that :)
Christian.
> > Jean-Marc > _______________________________________________ > dri-devel mailing list > dri-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/dri-devel
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