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AMD AE4DMA Driver Merged For Linux 6.14
In addition to the AMDXDNA driver being merged for Linux 6.14 for enabling the Ryzen AI NPUs, this next kernel version is introducing another new AMD kernel driver that hasn't been previously covered on Phoronix: AMD AE4DMA.
The AMD Processor features multiple ae4dma device instances, with each controller supporting a maximum of 16 DMA queues." The AMD AE4DMA sounds similar to or ultimately the successor as the PTDMA engine for the "PassThru DMA" engine found with EPYC processors of recent years and there's been the AMD PTDMA driver within the Linux kernel the past four years. These patches have undergone several rounds of code review the past few months before being primed for the mainline kernel.
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