diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/mm/k8topology_64.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/arch/x86/mm/k8topology_64.c b/arch/x86/mm/k8topology_64.c index a96006f7ae0..3695c9e8b9b 100644 --- a/arch/x86/mm/k8topology_64.c +++ b/arch/x86/mm/k8topology_64.c @@ -44,12 +44,14 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end) { unsigned long prevbase; struct bootnode nodes[8]; - int nodeid, i, j, nb; + int nodeid, i, nb; unsigned char nodeids[8]; int found = 0; u32 reg; unsigned numnodes; - unsigned num_cores; + unsigned cores; + unsigned bits; + int j; if (!early_pci_allowed()) return -1; @@ -60,9 +62,6 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end) printk(KERN_INFO "Scanning NUMA topology in Northbridge %d\n", nb); - num_cores = (cpuid_ecx(0x80000008) & 0xff) + 1; - printk(KERN_INFO "CPU has %d num_cores\n", num_cores); - reg = read_pci_config(0, nb, 0, 0x60); numnodes = ((reg >> 4) & 0xF) + 1; if (numnodes <= 1) @@ -168,11 +167,15 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end) } printk(KERN_INFO "Using node hash shift of %d\n", memnode_shift); + /* use the coreid bits from early_identify_cpu */ + bits = boot_cpu_data.x86_coreid_bits; + cores = (1<<bits); + for (i = 0; i < 8; i++) { if (nodes[i].start != nodes[i].end) { nodeid = nodeids[i]; - for (j = 0; j < num_cores; j++) - apicid_to_node[(nodeid * num_cores) + j] = i; + for (j = 0; j < cores; j++) + apicid_to_node[(nodeid << bits) + j] = i; setup_node_bootmem(i, nodes[i].start, nodes[i].end); } } |