diff options
| author | Alex Williamson <alex.williamson@redhat.com> | 2011-10-21 15:56:24 -0400 |
|---|---|---|
| committer | Hiroshi DOYU <hdoyu@nvidia.com> | 2012-01-23 11:11:38 +0200 |
| commit | 207e42f7c160d4ba3e93385fb0ccfe8d6b798069 (patch) | |
| tree | 68a9d6aeb094cf5640781f82d467cd7c5d2bc2e5 /arch/ia64/kernel/pci-dma.c | |
| parent | feba22d51d38598182191c36bdf9fc2f2ebbe481 (diff) | |
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/pci-dma.c')
| -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 |