Prevent abortion on multiple VCPU kicks
If we call qemu_cpu_kick more than once before the target was able to process the signal, pthread_kill will fail, and qemu will abort. Prevent this by avoiding the redundant signal. This logic can be found in qemu-kvm as well. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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