xics,xics_kvm: Handle CPU unplug correctly
XICS is setup for each CPU during initialization. Provide a routine to undo the same when CPU is unplugged. While here, move ss->cs management into xics from xics_kvm since there is nothing KVM specific in it. Also ensure xics reset doesn't set irq for CPUs that are already unplugged. This allows reboot of a VM that has undergone CPU hotplug and unplug to work correctly. Signed-off-by:Bharata B Rao <bharata@linux.vnet.ibm.com> Reviewed-by:
David Gibson <david@gibson.dropbear.id.au> Signed-off-by:
David Gibson <david@gibson.dropbear.id.au>
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