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authorKeshavamurthy, Anil S <anil.s.keshavamurthy@intel.com>2007-10-21 16:41:49 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-22 08:13:18 -0700
commitba39592764ed20cee09aae5352e603a27bf56b0d (patch)
treeefe7ec88bbd4d6b08b639830352c68411a7ef7fb /Documentation/kernel-parameters.txt
parentf8de50eb6b085572ea773f26e066835ea3d3028b (diff)
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Intel IOMMU: Intel IOMMU driver
Actual intel IOMMU driver. Hardware spec can be found at: http://www.intel.com/technology/virtualization This driver sets X86_64 'dma_ops', so hook into standard DMA APIs. In this way, PCI driver will get virtual DMA address. This change is transparent to PCI drivers. [akpm@linux-foundation.org: remove unneeded cast] [akpm@linux-foundation.org: build fix] [bunk@stusta.de: fix duplicate CONFIG_DMAR Makefile line] Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Ashok Raj <ashok.raj@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Christoph Lameter <clameter@sgi.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt10
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 6accd36..8157417 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -772,6 +772,16 @@ and is between 256 and 4096 characters. It is defined in the file
inttest= [IA64]
+ intel_iommu= [DMAR] Intel IOMMU driver (DMAR) option
+ off
+ Disable intel iommu driver.
+ igfx_off [Default Off]
+ By default, gfx is mapped as normal device. If a gfx
+ device has a dedicated DMAR unit, the DMAR unit is
+ bypassed by not enabling DMAR with this option. In
+ this case, gfx device will use physical address for
+ DMA.
+
io7= [HW] IO7 for Marvel based alpha systems
See comment before marvel_specify_io7 in
arch/alpha/kernel/core_marvel.c.
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