AMD Submits Initial AMDGPU DRM Updates Slated For Linux 4.15

Alex Deucher has submitted the initial AMD Direct Rendering Manager updates for pulling into DRM-Next that in turn will hit the Linux 4.15 kernel.

The feature work ready so far for queuing into DRM-Next includes per-VM buffer object support, many PowerPlay clean-ups, PowerPlay support for GCN 1.1 Sea Islands hardware, the "pasid" manager for the AMD KFD driver, interrupt infrastructure for recoverable page faults, SR-IOV fixes, initial GPU reset support for Vega 10, DRI PRIME mmap() support, TTM page table debugging improvements, and many bug fixes.

Great to see the continued improvements for Vega and the seemingly never-ending work on PowerPlay. It's also good that there is now PowerPlay support for GCN 1.1 Sea Islands support, another item to mark off the list before GCN 1.0/1.1 GPUs could theoretically default to the AMDGPU DRM in the future rather than Radeon DRM, but not for 4.15. And before anyone asks, there's no update yet on whether we will see the AMDGPU DC display code for Linux 4.15.

There's been no final call for review of DC yet while DC patches have continued flowing. We'll see in a few weeks whether this new display stack looks like it will be ready for merging in 4.15 or will be another kernel release without AMDGPU HDMI/DP audio, Vega display support, FreeSync, etc.

The list of AMDGPU changes so far for Linux 4.15 can be found via dri-devel. Given that 4.14-rc2 was just released this weekend, there's about four more weeks that new feature material will be accepted into DRM-Next before closing the window for 4.15.