AMD Posts Massive Patch Series For Enabling UALink In The Linux Kernel

AMD engineers submitted a large patch series to the Linux kernel adding UALink support for the AMDGPU driver. UALink is an open standard for high-speed GPU-to-GPU interconnects in data center scale-up pods, supporting up to 1,024 accelerators in a single domain. The first series contains 95 patches (~7k lines) covering core infrastructure and AMDGPU integration, enabling direct remote memory access between GPUs without copying, using a shared Network Physical Address space. A second, smaller series of three patches adds a new IOCTL interface and documentation for memory import/export handling.

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