pcibus_to_node can return -1 if we cannot determine which node a pci bus is on. If passed -1, cpumask_of_node will negatively index the lookup array and pull in random data:
# cat /sys/devices/pci0000:00/0000:00:01.0/local_cpus 00000000,00000003,00000000,00000000 # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpulist 64-65 Change cpumask_of_node to check for -1 and return cpu_all_mask in this case: # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpus ffffffff,ffffffff,ffffffff,ffffffff # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpulist 0-127 Signed-off-by: Anton Blanchard <an...@samba.org> --- Index: linux-cpumask/arch/powerpc/include/asm/topology.h =================================================================== --- linux-cpumask.orig/arch/powerpc/include/asm/topology.h 2010-01-06 15:20:22.992583563 +1100 +++ linux-cpumask/arch/powerpc/include/asm/topology.h 2010-01-06 15:27:24.058833128 +1100 @@ -17,7 +17,9 @@ static inline int cpu_to_node(int cpu) #define parent_node(node) (node) -#define cpumask_of_node(node) (&numa_cpumask_lookup_table[node]) +#define cpumask_of_node(node) ((node) == -1 ? \ + cpu_all_mask : \ + &numa_cpumask_lookup_table[node]) int of_node_to_nid(struct device_node *device); -- _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
