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

[pandora-kernel.git] / arch / x86_64 / pci / k8-bus.c

diff --git a/arch/x86_64/pci/k8-bus.c b/arch/x86_64/pci/k8-bus.c
index 7e7d0c2..3acf60d 100644 (file)
--- a/arch/x86_64/pci/k8-bus.c
+++ b/arch/x86_64/pci/k8-bus.c
@@ -29,7 +29,7 @@ __init static int
 fill_mp_bus_to_cpumask(void)
 {
        struct pci_dev *nb_dev = NULL;
-       int i, j, printed;
+       int i, j;
        u32 ldtbus, nid;
        static int lbnr[3] = {
                LDT_BUS_NUMBER_REGISTER_0,
@@ -47,13 +47,28 @@ fill_mp_bus_to_cpumask(void)
                         * if there are no busses hanging off of the current
                         * ldt link then both the secondary and subordinate
                         * bus number fields are set to 0.
+                        * 
+                        * RED-PEN
+                        * This is slightly broken because it assumes
+                        * HT node IDs == Linux node ids, which is not always
+                        * true. However it is probably mostly true.
                         */
                        if (!(SECONDARY_LDT_BUS_NUMBER(ldtbus) == 0
                                && SUBORDINATE_LDT_BUS_NUMBER(ldtbus) == 0)) {
                                for (j = SECONDARY_LDT_BUS_NUMBER(ldtbus);
                                     j <= SUBORDINATE_LDT_BUS_NUMBER(ldtbus);
-                                    j++)
-                                       pci_bus_to_node[j] = NODE_ID(nid);
+                                    j++) { 
+                                       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;
+                                       bus->sysdata = (void *)node;
+                               }               
                        }
                }
        }