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[PATCH] Calgary: allow compiling Calgary in but not using it by default

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This patch makes it possible to compile Calgary in but not use it by
default. In this mode, use 'iommu=calgary' to activate it.

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
Muli Ben-Yehuda
2006-12-07 02:14:07 +01:00
committed by Andi Kleen
parent eae9375554
commit bff6547bb6
5 changed files with 29 additions and 1 deletions
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Documentation/x86_64/boot-options.txt
+2 -1
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@@ -179,7 +179,7 @@ PCI
IOMMU
iommu=[size][,noagp][,off][,force][,noforce][,leak][,memaper[=order]][,merge]
[,forcesac][,fullflush][,nomerge][,noaperture]
[,forcesac][,fullflush][,nomerge][,noaperture][,calgary]
size set size of iommu (in bytes)
noagp don't initialize the AGP driver and use full aperture.
off don't use the IOMMU
@@ -200,6 +200,7 @@ IOMMU
buffering.
nodac Forbid DMA >4GB
panic Always panic when IOMMU overflows
calgary Use the Calgary IOMMU if it is available
swiotlb=pages[,force]