Messages in this thread Patch in this message | | | From | Boris Ostrovsky <> | Subject | [PATCH] ACPI/NUMA: Do not map pxm to node when NUMA is turned off | Date | Mon, 12 Dec 2016 14:29:53 -0500 |
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Otherwise we may unexpectedly reference a non-zero node via, for example, acpi_get_node() while other parts of the kernel assume that only node 0 (which is what NUMA_NO_NODE is supposed to be converted to) is available.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> --- drivers/acpi/numa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c index ce3a7a1..edb0c79 100644 --- a/drivers/acpi/numa.c +++ b/drivers/acpi/numa.c @@ -70,7 +70,7 @@ int acpi_map_pxm_to_node(int pxm) { int node; - if (pxm < 0 || pxm >= MAX_PXM_DOMAINS) + if (pxm < 0 || pxm >= MAX_PXM_DOMAINS || numa_off) return NUMA_NO_NODE; node = pxm_to_node_map[pxm]; -- 1.8.3.1
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