On Mon, 24 Sep 2012 12:09:00 +0200 Avi Kivity <avi@xxxxxxxxxx> wrote: > > while (vcpu->request) { > > xchg(vcpu->request, request); > > > > for_each_set_bit(request) { > > clear_bit(X); > > > > ...... > > } > > > > } > > In fact I had something like that in one of the earlier versions, but it > was problematic. I'll try to see what the issue was. Unless there are many requests, the cost of for_each_set_bit() and a few added code may exceed that of the original code. (Looping using __ffs() is an alternative because requests is "long".) So I wanted to know the most common requests pattern. Thanks, Takuya -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html