1 files changed, 32 insertions, 0 deletions

diff --git a/arch/x86_64/pci/mmconfig.c b/arch/x86_64/pci/mmconfig.c
index 8bea51030d66..8c0722b95cdc 100644
--- a/arch/x86_64/pci/mmconfig.c
+++ b/arch/x86_64/pci/mmconfig.c
@@ -163,6 +163,37 @@ static __init void unreachable_devices(void)
         }
 }
 
+static __init void pci_mmcfg_insert_resources(void)
+{
+#define PCI_MMCFG_RESOURCE_NAME_LEN 19
+        int i;
+        struct resource *res;
+        char *names;
+        unsigned num_buses;
+
+        res = kcalloc(PCI_MMCFG_RESOURCE_NAME_LEN + sizeof(*res),
+                        pci_mmcfg_config_num, GFP_KERNEL);
+
+        if (!res) {
+                printk(KERN_ERR "PCI: Unable to allocate MMCONFIG resources\n");
+                return;
+        }
+
+        names = (void *)&res[pci_mmcfg_config_num];
+        for (i = 0; i < pci_mmcfg_config_num; i++, res++) {
+                num_buses = pci_mmcfg_config[i].end_bus_number -
+                    pci_mmcfg_config[i].start_bus_number + 1;
+                res->name = names;
+                snprintf(names, PCI_MMCFG_RESOURCE_NAME_LEN, "PCI MMCONFIG %u",
+                        pci_mmcfg_config[i].pci_segment_group_number);
+                res->start = pci_mmcfg_config[i].base_address;
+                res->end = res->start + (num_buses << 20) - 1;
+                res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+                insert_resource(&iomem_resource, res);
+                names += PCI_MMCFG_RESOURCE_NAME_LEN;
+        }
+}
+
 void __init pci_mmcfg_init(int type)
 {
         int i;
@@ -206,6 +237,7 @@ void __init pci_mmcfg_init(int type)
         }
 
         unreachable_devices();
+        pci_mmcfg_insert_resources();
 
         raw_pci_ops = &pci_mmcfg;
         pci_probe = (pci_probe & ~PCI_PROBE_MASK) | PCI_PROBE_MMCONF;