On Mon, Jun 06, 2022 at 05:02:50PM +0100, Robin Murphy wrote: > No, partial DMA writes can sometimes effectively be expected behaviour, see > the whole SWIOTLB CVE fiasco for the most recent discussion on that: Yes, and I still have a TODO list item for interfaces that deal with the case of a transfer smaller than the mapping sanely, but I haven't managed to get to it yet.