On 18/07/2016 13:57, Peter Maydell wrote: > On 18 July 2016 at 12:54, Paolo Bonzini <pbonz...@redhat.com> wrote: >> On 18/07/2016 13:51, Peter Maydell wrote: >>> Looks like an attempt to do an atomic op on a larger-than-host-pointer type. >> >> Hmm, atomic_set should be acceptable even on 64-bit. > > How does that work, when the host might not have an atomic > 64-bit write?
All hosts we support should have it. Worst case, it could be done through FP registers. Paolo
