1 files changed, 11 insertions, 0 deletions

diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index d0d18db5d2a4..a614ee10f846 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -630,6 +630,7 @@ static __init int init_k8_gatt(struct agp_kern_info *info)
         struct pci_dev *dev;
         void *gatt;
         int i, error;
+        unsigned long start_pfn, end_pfn;
 
         printk(KERN_INFO "PCI-DMA: Disabling AGP.\n");
         aper_size = aper_base = info->aper_size = 0;
@@ -674,6 +675,16 @@ static __init int init_k8_gatt(struct agp_kern_info *info)
 
         printk(KERN_INFO "PCI-DMA: aperture base @ %x size %u KB\n",
                aper_base, aper_size>>10);
+
+        /* need to map that range */
+        end_pfn = (aper_base>>PAGE_SHIFT) + (aper_size>>PAGE_SHIFT);
+        if (end_pfn > max_low_pfn_mapped) {
+                start_pfn = max_low_pfn_mapped;
+                max_low_pfn_mapped = init_memory_mapping(start_pfn<<PAGE_SHIFT,
+                                                         end_pfn<<PAGE_SHIFT);
+                if (max_pfn_mapped < max_low_pfn_mapped)
+                        max_pfn_mapped = max_low_pfn_mapped;
+        }
         return 0;
 
  nommu: