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cpus: Fix CPU unplug for MTTCG 

Ensure that the unplugged CPU thread is destroyed and the waiting
thread is notified about it. This is needed for CPU unplug to work
correctly in MTTCG mode.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Bharata B Rao 2017-04-27 10:48:22 +05:30 committed by David Gibson
parent 4771df23ed
commit a3e53273ad
1 changed files with 6 additions and 0 deletions
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6
cpus.c
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@ -1483,6 +1483,12 @@ static void *qemu_tcg_cpu_thread_fn(void *arg)
/* Ignore everything else? */
break;
}
} else if (cpu->unplug) {
qemu_tcg_destroy_vcpu(cpu);
cpu->created = false;
qemu_cond_signal(&qemu_cpu_cond);
qemu_mutex_unlock_iothread();
return NULL;
}
atomic_mb_set(&cpu->exit_request, 0);