AMD XDNA driver adds 30 ms quantum

This is the kind of unglamorous kernel plumbing that matters once NPUs start being shared in real workloads. AMD is clearly responding to the same resource-starvation problem Intel already addressed in its own NPU driver, which is a sign that Linux AI accelerator support is maturing from “it runs” to “it behaves well under contention.”

• –The hardware scheduler can enforce fixed per-context time slices, which is the right lever for multi-user fairness.
• –The 30 ms default is conservative enough to prevent runaway monopolization without making the device feel overly preempted.
• –The tunable module parameter gives distro maintainers and power users a way to balance latency against throughput.
• –If merged, this is another marker that NPU drivers are becoming first-class shared resources, not single-app appliances.