[PATCH] x86-64: Use ACPI PXM to parse PCI<->node assignments

Since this is shared code I had to implement it for i386 too

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 15 insertions, 4 deletions

diff --git a/arch/x86_64/kernel/mpparse.c b/arch/x86_64/kernel/mpparse.c
index 312ecc9e5f7f..11642526c5b7 100644
--- a/arch/x86_64/kernel/mpparse.c
+++ b/arch/x86_64/kernel/mpparse.c
@@ -46,8 +46,6 @@ int acpi_found_madt;
 int apic_version [MAX_APICS];
 unsigned char mp_bus_id_to_type [MAX_MP_BUSSES] = { [0 ... MAX_MP_BUSSES-1] = -1 };
 int mp_bus_id_to_pci_bus [MAX_MP_BUSSES] = { [0 ... MAX_MP_BUSSES-1] = -1 };
-unsigned char pci_bus_to_node [256];
-EXPORT_SYMBOL(pci_bus_to_node);
 
 static int mp_current_pci_id = 0;
 /* I/O APIC entries */
diff --git a/arch/x86_64/mm/srat.c b/arch/x86_64/mm/srat.c
index 92f6ec79b232..db6b073a149f 100644
--- a/arch/x86_64/mm/srat.c
+++ b/arch/x86_64/mm/srat.c
@@ -25,6 +25,13 @@ static nodemask_t nodes_found __initdata;
 static struct node nodes[MAX_NUMNODES] __initdata;
 static __u8  pxm2node[256] = { [0 ... 255] = 0xff };
 
+int pxm_to_node(int pxm)
+{
+        if ((unsigned)pxm >= 256)
+                return 0;
+        return pxm2node[pxm];
+}
+
 static __init int setup_node(int pxm)
 {
         unsigned node = pxm2node[pxm];
diff --git a/arch/x86_64/pci/k8-bus.c b/arch/x86_64/pci/k8-bus.c
index d80c323669e0..3acf60ded2a0 100644
--- a/arch/x86_64/pci/k8-bus.c
+++ b/arch/x86_64/pci/k8-bus.c
@@ -58,10 +58,16 @@ fill_mp_bus_to_cpumask(void)
                                 for (j = SECONDARY_LDT_BUS_NUMBER(ldtbus);
                                      j <= SUBORDINATE_LDT_BUS_NUMBER(ldtbus);
                                      j++) { 
-                                        int node = NODE_ID(nid);
+                                        struct pci_bus *bus;
+                                        long node = NODE_ID(nid);
+                                        /* Algorithm a bit dumb, but
+                                           it shouldn't matter here */
+                                        bus = pci_find_bus(0, j);
+                                        if (!bus)
+                                                continue;
                                         if (!node_online(node))
                                                 node = 0;
-                                        pci_bus_to_node[j] = node;
+                                        bus->sysdata = (void *)node;
                                 }               
                         }
                 }