[PATCH] x86-64: Avoid unnecessary double bouncing for swiotlb

[pandora-kernel.git] / include / asm-x86_64 / pci.h

diff --git a/include/asm-x86_64/pci.h b/include/asm-x86_64/pci.h
index eeb3088..5a82a67 100644 (file)
--- 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
  *
  * address space.  The networking and block device layers use
  * this boolean for bounce buffer decisions
  *

- * On AMD64 it mostly equals, but we set it to zero to tell some subsystems
- * that an IOMMU is available.
+ * On x86-64 it mostly equals, but we set it to zero to tell some subsystems
+ * that an hard or soft IOMMU is available.

  */
  */

-#define PCI_DMA_BUS_IS_PHYS    (no_iommu ? 1 : 0)
+#define PCI_DMA_BUS_IS_PHYS 0

 
 /*
  * x86-64 always supports DAC, but sometimes it is useful to force
 
 /*
  * x86-64 always supports DAC, but sometimes it is useful to force