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Diffstat (limited to 'arch/x86_64/kernel/aperture.c')
-rw-r--r--arch/x86_64/kernel/aperture.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86_64/kernel/aperture.c b/arch/x86_64/kernel/aperture.c
index c7f4fdd20f0..e4e2b7d01f8 100644
--- a/arch/x86_64/kernel/aperture.c
+++ b/arch/x86_64/kernel/aperture.c
@@ -23,6 +23,7 @@
#include <asm/io.h>
#include <asm/proto.h>
#include <asm/pci-direct.h>
+#include <asm/dma.h>
int iommu_aperture;
int iommu_aperture_disabled __initdata = 0;
@@ -247,7 +248,7 @@ void __init iommu_hole_init(void)
/* Got the aperture from the AGP bridge */
} else if (swiotlb && !valid_agp) {
/* Do nothing */
- } else if ((!no_iommu && end_pfn >= 0xffffffff>>PAGE_SHIFT) ||
+ } else if ((!no_iommu && end_pfn >= MAX_DMA32_PFN) ||
force_iommu ||
valid_agp ||
fallback_aper_force) {