On Tue, 2018-03-27 at 15:36 +0100, Will Deacon wrote: > > Can we say the same thing for iowrite32() and iowrite32be(). I also see wmb() > > in front of these. > > I don't think so. My reading of memory-barriers.txt says that writeX might > expand to outX, and outX is not ordered with respect to other types of > memory. Ugh ? My understanding of HW at least is the exact opposite. outX is *more* ordered if anything, than any other accessors. IO space is completely synchronous, non posted and ordered afaik. Cheers, Ben. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
