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The FWNMI option must deliver system reset interrupts to their registered address, and there are a few constraints on the handler addresses specified in PAPR. Add the system reset address state and checks. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Message-Id: <20200316142613.121089-4-npiggin@gmail.com> Reviewed-by: Greg Kurz <groug@kaod.org> Reviwed-by: Mahesh Salgaonkar <mahesh@linux.ibm.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>