On 27 August 2015 at 11:53, Michael S. Tsirkin <m...@redhat.com> wrote: > On Thu, Aug 27, 2015 at 11:49:32AM +0100, Peter Maydell wrote: >> But *why* does it require the size to be zero? I still think >> the caller should just avoid trying to do zero-size memory >> operations: they don't make sense. What is a zero size >> operation supposed to mean?
> This just mirrors an API we have in kvm: if you pass 0 > size when registering an ioeventfd, it will match on access > of any size. Hrm. It feels to me like the memory APIs ought to filter out bad access sizes at an earlier stage, rather than trying to make them work all the way through. -- PMM
