The NUMA node information for PCI devices provided through sysfs is invalid for AMD Opteron(TM) Processor 62xx and 63xx on Red Hat Enterprise Linux 6.

Issue

• The NUMA node information for PCI devices provided through sysfs is invalid for AMD Opteron(TM) Processor 62xx and 63xx on Red Hat Enterprise Linux 6.

Eg: 1

# cat /proc/cpuinfo | grep "model name" | uniq
model name  : AMD Opteron(TM) Processor 6276

# find /sys/ -name "numa_node" | while read fname; do cat $fname; done|uniq
-1

Eg: 2

# cat /proc/cpuinfo | grep "model name" | uniq
model name  : AMD Opteron(tm) Processor 6376

# find /sys/ -name "numa_node" | while read fname; do cat $fname; done | uniq
-1