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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-22 21:38:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-22 21:38:22 -0700
commit687d680985b1438360a9ba470ece8b57cd205c3b (patch)
treeae253608531e5c3e823600974c610e722e7de759 /arch/x86/kernel/pci-dma.c
parent1053414068bad659479e6efa62a67403b8b1ec0a (diff)
parent008fe148cb0fb51d266baabe2c09997b21cf90c6 (diff)
Merge git://git.infradead.org/~dwmw2/iommu-2.6.31
* git://git.infradead.org/~dwmw2/iommu-2.6.31: intel-iommu: Fix one last ia64 build problem in Pass Through Support VT-d: support the device IOTLB VT-d: cleanup iommu_flush_iotlb_psi and flush_unmaps VT-d: add device IOTLB invalidation support VT-d: parse ATSR in DMA Remapping Reporting Structure PCI: handle Virtual Function ATS enabling PCI: support the ATS capability intel-iommu: dmar_set_interrupt return error value intel-iommu: Tidy up iommu->gcmd handling intel-iommu: Fix tiny theoretical race in write-buffer flush. intel-iommu: Clean up handling of "caching mode" vs. IOTLB flushing. intel-iommu: Clean up handling of "caching mode" vs. context flushing. VT-d: fix invalid domain id for KVM context flush Fix !CONFIG_DMAR build failure introduced by Intel IOMMU Pass Through Support Intel IOMMU Pass Through Support Fix up trivial conflicts in drivers/pci/{intel-iommu.c,intr_remapping.c}
Diffstat (limited to 'arch/x86/kernel/pci-dma.c')
-rw-r--r--arch/x86/kernel/pci-dma.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 328592fb604..47630479b06 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -32,6 +32,8 @@ int no_iommu __read_mostly;
/* Set this to 1 if there is a HW IOMMU in the system */
int iommu_detected __read_mostly = 0;
+int iommu_pass_through;
+
dma_addr_t bad_dma_address __read_mostly = 0;
EXPORT_SYMBOL(bad_dma_address);
@@ -209,6 +211,10 @@ static __init int iommu_setup(char *p)
#ifdef CONFIG_SWIOTLB
if (!strncmp(p, "soft", 4))
swiotlb = 1;
+ if (!strncmp(p, "pt", 2)) {
+ iommu_pass_through = 1;
+ return 1;
+ }
#endif
gart_parse_options(p);