X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fx86_64%2Fmm%2Fk8topology.c;h=b5b8dba28b4efa43000510ad924a83cc97a95fd4;hb=refs%2Fheads%2Fvserver;hp=ec35747aacd764b0aedf1824e604b704e5a164e9;hpb=6a77f38946aaee1cd85eeec6cf4229b204c15071;p=linux-2.6.git

diff --git a/arch/x86_64/mm/k8topology.c b/arch/x86_64/mm/k8topology.c
index ec35747aa..b5b8dba28 100644
--- a/arch/x86_64/mm/k8topology.c
+++ b/arch/x86_64/mm/k8topology.c
@@ -43,15 +43,20 @@ static __init int find_northbridge(void)
 int __init k8_scan_nodes(unsigned long start, unsigned long end)
 { 
 	unsigned long prevbase;
-	struct node nodes[8];
+	struct bootnode nodes[8];
 	int nodeid, i, nb; 
+	unsigned char nodeids[8];
 	int found = 0;
 	u32 reg;
 	unsigned numnodes;
 	nodemask_t nodes_parsed;
+	unsigned dualcore = 0;
 
 	nodes_clear(nodes_parsed);
 
+	if (!early_pci_allowed())
+		return -1;
+
 	nb = find_northbridge(); 
 	if (nb < 0) 
 		return nb;
@@ -67,11 +72,15 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end)
 	prevbase = 0;
 	for (i = 0; i < 8; i++) { 
 		unsigned long base,limit; 
-
+		u32 nodeid;
+		
+		/* Undefined before E stepping, but hopefully 0 */
+		dualcore |= ((read_pci_config(0, nb, 3, 0xe8) >> 12) & 3) == 1;
 		base = read_pci_config(0, nb, 1, 0x40 + i*8);
 		limit = read_pci_config(0, nb, 1, 0x44 + i*8);
 
 		nodeid = limit & 7; 
+		nodeids[i] = nodeid;
 		if ((base & 3) == 0) { 
 			if (i < numnodes)
 				printk("Skipping disabled node %d\n", i); 
@@ -102,6 +111,7 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end)
 		limit >>= 16; 
 		limit <<= 24; 
 		limit |= (1<<24)-1;
+		limit++;
 
 		if (limit > end_pfn << PAGE_SHIFT)
 			limit = end_pfn << PAGE_SHIFT;
@@ -139,6 +149,9 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end)
 		
 		nodes[nodeid].start = base; 
 		nodes[nodeid].end = limit;
+		e820_register_active_regions(nodeid,
+				nodes[nodeid].start >> PAGE_SHIFT,
+				nodes[nodeid].end >> PAGE_SHIFT);
 
 		prevbase = base;
 
@@ -148,7 +161,7 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end)
 	if (!found)
 		return -1; 
 
-	memnode_shift = compute_hash_shift(nodes, numnodes);
+	memnode_shift = compute_hash_shift(nodes, 8);
 	if (memnode_shift < 0) { 
 		printk(KERN_ERR "No NUMA node hash function found. Contact maintainer\n"); 
 		return -1; 
@@ -157,8 +170,9 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end)
 
 	for (i = 0; i < 8; i++) {
 		if (nodes[i].start != nodes[i].end) { 
-			/* assume 1:1 NODE:CPU */
-			cpu_to_node[i] = i; 
+			nodeid = nodeids[i];
+			apicid_to_node[nodeid << dualcore] = i;
+			apicid_to_node[(nodeid << dualcore) + dualcore] = i;
 			setup_node_bootmem(i, nodes[i].start, nodes[i].end); 
 		} 
 	}