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authorBoris Ostrovsky <boris.ostrovsky@oracle.com>2016-12-12 23:18:29 -0500
committerThomas Gleixner <tglx@linutronix.de>2016-12-15 11:32:32 +0100
commitaec03f89e905dca9ce4b061e03ee1da3a3eb3432 (patch)
treeb6da0a16933419e0298371c8108e209b8d77865d /arch/arm64/mm
parent4370a3ef39f3d07342a1ae9967701bd697c8d9df (diff)
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: Boris 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.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/arm64/mm')
-rw-r--r--arch/arm64/mm/numa.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c
index 4b32168cf91a..b388a99fea7b 100644
--- a/arch/arm64/mm/numa.c
+++ b/arch/arm64/mm/numa.c
@@ -35,7 +35,7 @@ static int cpu_to_node_map[NR_CPUS] = { [0 ... NR_CPUS-1] = NUMA_NO_NODE };
static int numa_distance_cnt;
static u8 *numa_distance;
-static bool numa_off;
+bool numa_off;
static __init int numa_parse_early_param(char *opt)
{