On Wed, Feb 12, 2020 at 09:31:32AM +0100, Paolo Bonzini wrote: > On 29/01/20 18:20, Stefan Hajnoczi wrote: > > + /* Semaphore semantics don't make sense when autoreset is enabled */ > > + if ((flags & EFD_SEMAPHORE) && (flags & EFD_AUTORESET)) > > + return -EINVAL; > > + > > I think they do, you just want to subtract 1 instead of setting the > count to 0. This way, writing 1 would be the post operation on the > semaphore, while poll() would be the wait operation. True! Then EFD_AUTORESET is not a fitting name. EFD_AUTOREAD or EFD_POLL_READS? Stefan
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