AMD Linux engineers are running on extending the Direct Rendering Supervisor (DRM) subsystem impaired by means of their GPUs/accelerators to permit as much as 128 DRM units consistent with device.
Recently there finally ends up being a hard-coded restrict of 64 DRM units consistent with device however AMD has volleyed a pocket to double that restrict to 128. The pocket merely notes, “This makes room for up to 128 DRM devices.“
It’s now not sunlit of AMD’s motivation for creating a 128 DRM tool restrict consistent with device whether or not it’s for some inter-connected supercomputer/pile sort setup by means of CXL or for sub-partitioning a smaller poised of unedited GPUs/accelerators for shared/VM sort utilization situation or what precisely is chief them to elevating this 64 to 128 DRM tool restrict.
It’s been famous although that this will probably fracture the ABI / user-space compatibility. In the end we’ll see how elevating this restrict is in the long run performed and if past discussions divulge any more perception to AMD short of to double this tool restrict.