The latest in the hardware enablement work for adding support for the upcoming Radeon RX Vega to the open-source Linux graphics driver are the patches to libdrm for this Mesa DRM library that sits between the DRM kernel drivers and Mesa / xf86-video / other user-space graphics code…

Source: Phoronix – Radeon Vega Changes For Libdrm, Plans For Merging Prior To Kernel Support