agreed, why not just use cpu to clear it ? is it because performance ? ________________________________ å??件人: Michel Dänzer <michel at daenzer.net> å??é??æ?¶é?´: 2017å¹´2æ??8æ?¥ 23:52:02 æ?¶ä»¶äºº: Christian König; Liu, Monk æ??é??: amd-gfx at lists.freedesktop.org 主é¢?: Re: ç?å¤?: [PATCH] drm/amdgpu:fix amdgpu_sa_bo_new error On 09/02/17 12:30 AM, Christian König wrote: > The IB test make the decision if the hardware is working or not. > > So they should be the first commands (except for the ring tests) we send > to the hardware. > > When we allocate the fb before the test we send the clear command to the > hardware without knowing if the hardware really works or not. > > Not a big issue, but I think the order makes more sense that way. I just wonder if it's worth all the trouble, just to clear the fbcon buffer[0], if the result is that the console output is delayed, possibly indefinitely. [0] We don't have any other hardware acceleration for fbcon, so its BO is only accessed by the CPU and display hardware after this, and has to be pinned in the CPU visible area of VRAM at all times anyway. -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://lists.freedesktop.org/archives/amd-gfx/attachments/20170208/8b0297de/attachment.html>
