On 10/10/2016 08:59 AM, Paolo Bonzini wrote: > Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> > --- > docs/atomics.txt | 79 > ++++++++++++++++++++++++++++++--------------------- > include/qemu/atomic.h | 50 +++++++++++++++++++------------- > 2 files changed, 77 insertions(+), 52 deletions(-) >
> > +- smp_mb_acquire() guarantees that all the LOAD operations specified before > + the barrier will appear to happen before all the LOAD or STORE operations > + specified after the barrier with respect to the other components of > + the system. > + > +- smp_mb_release() guarantees that all the STORE operations specified *after* > + the barrier will appear to happen before all the LOAD or STORE operations Sounds impossible. Should this be 'will appear to happen after all'? > + specified *before* the barrier with respect to the other components of > + the system. > + > - smp_mb() guarantees that all the LOAD and STORE operations specified > before the barrier will appear to happen before all the LOAD and > STORE operations specified after the barrier with respect to the other > @@ -149,8 +160,9 @@ They come in four kinds: -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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