[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Xen spinlock questions
Keir Fraser wrote: That's right. The hypercall returns if any event is delivered to the vcpu, or if any port in the poll set is pending. The fact we don't clear the vcpu from the poll_mask if unblocked for event delivery isn't a correctness issue, but it will cause unnecessary extra work in future invocations of evtchn_set_pending(). Perhaps vcpu_unblock() should clear it. That seems reasonable. In this use-case, it's quite likely that if the poll is interrupted by event delivery, on return it will find that the spinlock is now free and never re-enter the poll. J _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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