1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 4d5cc7181982..ae1d3d8b384d 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -501,7 +501,7 @@ static __init unsigned long check_iommu_size(unsigned long aper, u64 aper_size)
         }
 
         a = aper + iommu_size;
-        iommu_size -= round_up(a, LARGE_PAGE_SIZE) - a;
+        iommu_size -= round_up(a, PMD_PAGE_SIZE) - a;
 
         if (iommu_size < 64*1024*1024) {
                 printk(KERN_WARNING