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When a Virtual Processor is scheduled to run on a HW thread, the hypervisor pushes its identifier in the OS CAM line. When running with kernel_irqchip=off, QEMU needs to emulate the same behavior. Set the OS CAM line when the interrupt presenter of the sPAPR core is reset. This will also cover the case of hot-plugged CPUs. This change also has the benefit to remove the use of CPU_FOREACH() which can be unsafe. Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Greg Kurz <groug@kaod.org> Message-Id: <20191022163812.330-8-clg@kaod.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>