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Diffstat (limited to 'arch/x86_64/kernel/pci-gart.c')
-rw-r--r--arch/x86_64/kernel/pci-gart.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86_64/kernel/pci-gart.c b/arch/x86_64/kernel/pci-gart.c
index 2b865c90b04..116e00f1bb7 100644
--- a/arch/x86_64/kernel/pci-gart.c
+++ b/arch/x86_64/kernel/pci-gart.c
@@ -804,7 +804,7 @@ static int __init pci_iommu_init(void)
}
if (no_iommu ||
- (!force_iommu && end_pfn < 0xffffffff>>PAGE_SHIFT) ||
+ (!force_iommu && (end_pfn-1) < 0xffffffff>>PAGE_SHIFT) ||
!iommu_aperture ||
(no_agp && init_k8_gatt(&info) < 0)) {
printk(KERN_INFO "PCI-DMA: Disabling IOMMU.\n");