Image via CrunchBase
Aside from a lot of other exciting DRM driver happenings for the Linux 3.9 kernel, it looks like the DRM “PRIME Helpers” that were conceived by NVIDIA to help them support DMA_BUF in their binary driver will be merged.
NVIDIA can’t directly utilize the Linux kernel’s DMA_BUF buffer sharing mechanism — a zero-copy way to share buffers between different kernel drivers whether it be DRM or other sub-systems — due to GPL-only kernel symbols and bickering amongst kernel developers.
While their binary blob is off-limits from using DMA_BUF directly, Aaron Plattner came up with “PRIME Helper” to reduce re-implementing DMA_BUF functionality in every driver while also introducing new lower-level hooks for the DRM PRIME import/export functionality.
The patch by Aaron was merged into drm-next last week. This makes it part of the pull request that will go into the Linux 3.9 kernel and could eventually lead NVIDIA to properly playing with PRIME / NVIDIA Optimus support on Linux.
There’s also related DMA_BUF improvements that will be coming to the Linux 3.9 kernel.
Other graphics-related work for Linux 3.9 includes KMS locking, the Intel no-reloc performance optimization, AMD Radeon HD 8000 series support for the unreleased hardware, Radeon DRM improvements, work on the open-source Tegra driver, and many other kernel changes.
Finally! Good to hear that!! In the meanwhile, here’s how I “solved” the Optimus issue for now: http://dariofaggioli.wordpress.com/2013/02/18/fedora-optimus/
Reblogged this on Dario's and commented:
At least it looks like things are improving, perhaps, in a not too far future, neither this http://dariofaggioli.wordpress.com/2013/02/18/fedora-optimus/ nor this http://dariofaggioli.wordpress.com/2013/02/19/nvidia-31032-kernel-377/ won’t be necessary any longer…