On 02/09/2017 06:39 PM, Tamas K Lengyel wrote:
>> @@ -316,8 +302,9 @@ void vm_event_put_request(struct domain *d,
>> * See the comments above wake_blocked() for more information
>> * on how this mechanism works to avoid waiting. */
>> avail_req = vm_event_ring_available(ved);
>> -
It is currently possible for the guest to lock when subscribing
to synchronous vm_events if max_vcpus is larger than the
number of available ring buffer slots. This patch no longer
blocks already paused VCPUs, fixing the issue for this use
case, and wakes up as many blocked VCPUs as there are
