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| author |   Alex Williamson <alex.williamson@redhat.com> | 2011-10-21 15:56:24 -0400 |
|---|---|---|
| committer |   Joerg Roedel <joerg.roedel@amd.com> | 2011-11-15 12:22:31 +0100 |
| commit | bcb71abe7d4c5a0d0368c67da0a7def4fc73497a (patch) | |
| tree | 3a043f872b234cb5c47cec1c01b4bbb69539fa0f /arch/ia64/kernel | |
| parent | iommu/amd: Implement iommu_device_group (diff) | |
| download | linux-dev-bcb71abe7d4c5a0d0368c67da0a7def4fc73497a.tar.xz linux-dev-bcb71abe7d4c5a0d0368c67da0a7def4fc73497a.zip | |
iommu: Add option to group multi-function devices
The option iommu=group_mf indicates the that the iommu driver should
expose all functions of a multi-function PCI device as the same
iommu_device_group. This is useful for disallowing individual functions
being exposed as independent devices to userspace as there are often
hidden dependencies. Virtual functions are not affected by this option.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/ia64/kernel')
| -rw-r--r-- | arch/ia64/kernel/pci-dma.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/ia64/kernel/pci-dma.c b/arch/ia64/kernel/pci-dma.c index c16162c70860..eb1175720050 100644 --- a/arch/ia64/kernel/pci-dma.c +++ b/arch/ia64/kernel/pci-dma.c @@ -33,6 +33,7 @@ int force_iommu __read_mostly; #endif int iommu_pass_through; +int iommu_group_mf; /* Dummy device used for NULL arguments (normally ISA). Better would be probably a smaller DMA mask, but this is bug-to-bug compatible |