1 files changed, 3 insertions, 3 deletions
diff --git a/include/asm-x86_64/pci.h b/include/asm-x86_64/pci.h
index 5a82a6762c21..eeb3088a1c9e 100644
--- a/include/asm-x86_64/pci.h
+++ b/include/asm-x86_64/pci.h
@@ -50,10 +50,10 @@ extern int iommu_setup(char *opt);
 * address space.  The networking and block device layers use
 * this boolean for bounce buffer decisions
 *
- * On x86-64 it mostly equals, but we set it to zero to tell some subsystems
+ * On AMD64 it mostly equals, but we set it to zero to tell some subsystems
- * that an hard or soft IOMMU is available.
+ * that an IOMMU is available.
 */
-#define PCI_DMA_BUS_IS_PHYS 0
+#define PCI_DMA_BUS_IS_PHYS     (no_iommu ? 1 : 0)
 /*
 * x86-64 always supports DAC, but sometimes it is useful to force

diff --git a/include/asm-x86_64/pci.h b/include/asm-x86_64/pci.h index 5a82a6762c21..eeb3088a1c9e 100644 --- a/include/asm-x86_64/pci.h +++ b/include/asm-x86_64/pci.h
@@ -50,10 +50,10 @@ extern int iommu_setup(char *opt);
50	* address space. The networking and block device layers use	50	* address space. The networking and block device layers use
51	* this boolean for bounce buffer decisions	51	* this boolean for bounce buffer decisions
52	*	52	*
53	* On x86-64 it mostly equals, but we set it to zero to tell some subsystems	53	* On AMD64 it mostly equals, but we set it to zero to tell some subsystems
54	* that an hard or soft IOMMU is available.	54	* that an IOMMU is available.
55	*/	55	*/
56	#define PCI_DMA_BUS_IS_PHYS 0	56	#define PCI_DMA_BUS_IS_PHYS (no_iommu ? 1 : 0)
57		57
58	/*	58	/*
59	* x86-64 always supports DAC, but sometimes it is useful to force	59	* x86-64 always supports DAC, but sometimes it is useful to force