HOTPLUG: Adapt cpuset hotplug callback to CPU_DYING
CPU_DYING is called in atomic context, so don't try to take any locks.
Signed-off-by: NAvi Kivity <avi@qumranet.com>
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CPU_DYING is called in atomic context, so don't try to take any locks.
Signed-off-by: NAvi Kivity <avi@qumranet.com>