On 09/04/2018 15:07, David Hildenbrand wrote: > If we have parallel calls to resume/pause_all_vcpus() we can get > into trouble because the qemu mutex is temporarily dropped while > waiting for all threads to stop. This can happen e.g. for s390x, where > resume/pause_all_vcpus() can be triggered by a VCPU.
Why does s390 need to do pause_all_vcpus()/resume_all_vcpus() instead of just asking the main thread to do it (similar to qemu_system_reset), is it because diag 308 must be synchronous? One disadvantage of the current approach is that diag 308 does not obey -no-reboot. Paolo
