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| author | Jon Mason <jdmason@us.ibm.com> | 2006-06-26 13:58:05 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-26 10:48:18 -0700 |
| commit | 8d4f6b93a4aaa6b56b600cd1165c971f4395e4b3 (patch) | |
| tree | 23955634ded577e53c46390714a6f069b4587c86 /arch/x86_64/kernel/pci-swiotlb.c | |
| parent | 2bbc419f9d51b44f3fdeea12c5b786bdace82b8e (diff) | |
| download | lwn-8d4f6b93a4aaa6b56b600cd1165c971f4395e4b3.tar.gz lwn-8d4f6b93a4aaa6b56b600cd1165c971f4395e4b3.zip | |
[PATCH] x86_64: Calgary IOMMU - introduce iommu_detected
swiotlb relies on the gart specific iommu_aperture variable to know if
we discovered a hardware IOMMU before swiotlb initialization. Introduce
iommu_detected to do the same thing, but in a HW IOMMU neutral manner,
in preparation for adding the Calgary HW IOMMU.
Signed-Off-By: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-Off-By: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/kernel/pci-swiotlb.c')
| -rw-r--r-- | arch/x86_64/kernel/pci-swiotlb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86_64/kernel/pci-swiotlb.c b/arch/x86_64/kernel/pci-swiotlb.c index 990ed67896f2..ebdb77fe2057 100644 --- a/arch/x86_64/kernel/pci-swiotlb.c +++ b/arch/x86_64/kernel/pci-swiotlb.c @@ -31,7 +31,7 @@ struct dma_mapping_ops swiotlb_dma_ops = { void pci_swiotlb_init(void) { /* don't initialize swiotlb if iommu=off (no_iommu=1) */ - if (!iommu_aperture && !no_iommu && + if (!iommu_detected && !no_iommu && (end_pfn > MAX_DMA32_PFN || force_iommu)) swiotlb = 1; if (swiotlb) { |