On Wed, Sep 04, 2019 at 03:02:14PM +0200, Thomas Hellström (VMware) wrote: > It looks like it does that, although when we send it, the SWIOTLB error has > already occured and been printed out, and then the sequence starts again.
Well, the only way to really find out is to try. We also have a backoff algorithm in the SCSI midlayer, so it should not be much of an inpact. If you care about the warnings they can be disabled using DMA_ATTR_NO_WARN. I have to admit that I'm not even sure the warnings are all that useful, but that's something you need to take up with the swiotlb maintainer.