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authorAlex Williamson <alex.williamson@redhat.com>2011-10-21 15:56:24 -0400
committerJoerg Roedel <joerg.roedel@amd.com>2011-11-15 12:22:31 +0100
commitbcb71abe7d4c5a0d0368c67da0a7def4fc73497a (patch)
tree3a043f872b234cb5c47cec1c01b4bbb69539fa0f /arch/ia64/kernel
parent8fbdce659549d93dfb257ec4eabacf63a188e506 (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')
-rw-r--r--arch/ia64/kernel/pci-dma.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/ia64/kernel/pci-dma.c b/arch/ia64/kernel/pci-dma.c
index c16162c7086..eb117572005 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