Re: [PATCH net-next v5 16/19] xsk: allow drivers to retain DMA mappings independently of pools
flat view
From: Björn Töpel <bjorn@kernel.org>
Date: 2026-09-28 12:23:01
Also in:
bpf, linux-sunxi, linux-tegra, lkml
James Hilliard [off-list ref] writes:
An unsuccessful device shutdown does not make its DMA memory safe to unmap.
Why does this need an AF_XDP API? Can stmmac fence DMA before releasing the pool? Please show a case where stop and reset fail, DMA remains active, and the driver cannot isolate it. Björn