On 01/06/17 19:01, Anoob Soman wrote: > Hi, > > Can someone explain, why evtchn_fifo_unmask() requires irqs_disabled(). > What happens, if irqs are not disabled ?
evtchn_fifo_unmask() seems to be not critical, but evtchn_2l_unmask() might be racy if another event is coming in in the middle. The BUG_ON() in evtchn_fifo_unmask() just makes sure adding a new caller not obeying the restriction of evtchn_2l_unmask() won't be unnoticed. Juergen _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
