[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 2/2] Xen/mem_event: Prevent underflow of vcpu pause counts
>> +void mem_event_vcpu_unpause(struct vcpu *v) { >> + if ( test_and_clear_bool(v->paused_for_mem_event) ) > >And now that we consider more than one mem event piling up to pause a >vcpu, this has to become an atomic counter, which unpauses on zero, and >takes care of underflow. Very true. I have seen this event pile up occur in practice in our product. Thanks, Aravindh _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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