Ryzen AI AMDXDNA Driver Adding Expandable Heap Support With Linux 7.2
AMD is enhancing the AMDXDNA accelerator driver to support Ryzen AI NPUs on Linux. The upcoming Linux 7.2 will feature expandable heap support, allowing for dynamic heap size adjustments. This improvement will enable user-space software to allocate smaller initial heaps and expand them as needed.
- ▪The AMDXDNA driver is being updated for Linux 7.2 with expandable heap support.
- ▪This feature allows for smaller initial heap allocations that can grow on-demand.
- ▪The driver currently does not support heap shrinking, only expansion.
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Ryzen AI AMDXDNA Driver Adding Expandable Heap Support With Linux 7.2 Written by Michael Larabel in AMD on 21 May 2026 at 08:57 AM EDT. Add A Comment AMD engineers continue enhancing the AMDXDNA accelerator driver for supporting the Ryzen AI NPUs on Linux. Already queued in DRM-Next ahead of the Linux 7.2 merge window in June is support for AMD's next-gen "AIE4" NPU hardware with the AMDXDNA driver and other improvements. As part of the latest round of DRM-Misc-Next patches this week, another AMDXDNA feature is coming for Linux 7.2: expandable heap. The AMDXDNA driver's expandable heap support is to allow avoiding the allocation of a large heap initially. With this new code, it's now possible to allocate a smaller initial heap and to then grow its size on-demand.
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