ACPI/NUMA: Do not map pxm to node when NUMA is turned off
acpi_map_pxm_to_node() unconditially maps nodes even when NUMA is turned off. So acpi_get_node() might return a node > 0, which is fatal when NUMA is disabled as the rest of the kernel assumes that only node 0 exists. Expose numa_off to the acpi code and return NUMA_NO_NODE when it's set. Signed-off-by: NBoris Ostrovsky <boris.ostrovsky@oracle.com> Cc: fenghua.yu@intel.com Cc: tony.luck@intel.com Cc: linux-ia64@vger.kernel.org Cc: catalin.marinas@arm.com Cc: rjw@rjwysocki.net Cc: will.deacon@arm.com Cc: linux-acpi@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: lenb@kernel.org Link: http://lkml.kernel.org/r/1481602709-18260-1-git-send-email-boris.ostrovsky@oracle.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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