diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-10 11:08:21 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-10 11:08:21 -0800 |
| commit | 1c8106528aa6bf16b3f457de80df1cf7462a49a4 (patch) | |
| tree | 4aed009c4a36195fd14c9f8d70fe2723a49583da /arch/x86 | |
| parent | 1a464cbb3d483f2f195b614cffa4aa1b910a0440 (diff) | |
| parent | f93ea733878733f3e98475bc3e2ccf789bebcfb8 (diff) | |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (53 commits)
iommu/amd: Set IOTLB invalidation timeout
iommu/amd: Init stats for iommu=pt
iommu/amd: Remove unnecessary cache flushes in amd_iommu_resume
iommu/amd: Add invalidate-context call-back
iommu/amd: Add amd_iommu_device_info() function
iommu/amd: Adapt IOMMU driver to PCI register name changes
iommu/amd: Add invalid_ppr callback
iommu/amd: Implement notifiers for IOMMUv2
iommu/amd: Implement IO page-fault handler
iommu/amd: Add routines to bind/unbind a pasid
iommu/amd: Implement device aquisition code for IOMMUv2
iommu/amd: Add driver stub for AMD IOMMUv2 support
iommu/amd: Add stat counter for IOMMUv2 events
iommu/amd: Add device errata handling
iommu/amd: Add function to get IOMMUv2 domain for pdev
iommu/amd: Implement function to send PPR completions
iommu/amd: Implement functions to manage GCR3 table
iommu/amd: Implement IOMMUv2 TLB flushing routines
iommu/amd: Add support for IOMMUv2 domain mode
iommu/amd: Add amd_iommu_domain_direct_map function
...
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/iommu.h | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/pci-dma.c | 11 |
2 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/include/asm/iommu.h b/arch/x86/include/asm/iommu.h index 345c99cef152..dffc38ee6255 100644 --- a/arch/x86/include/asm/iommu.h +++ b/arch/x86/include/asm/iommu.h @@ -5,6 +5,7 @@ extern struct dma_map_ops nommu_dma_ops; extern int force_iommu, no_iommu; extern int iommu_detected; extern int iommu_pass_through; +extern int iommu_group_mf; /* 10 seconds */ #define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000) diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index 80dc793b3f63..1c4d769e21ea 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -45,6 +45,15 @@ int iommu_detected __read_mostly = 0; */ int iommu_pass_through __read_mostly; +/* + * Group multi-function PCI devices into a single device-group for the + * iommu_device_group interface. This tells the iommu driver to pretend + * it cannot distinguish between functions of a device, exposing only one + * group for the device. Useful for disallowing use of individual PCI + * functions from userspace drivers. + */ +int iommu_group_mf __read_mostly; + extern struct iommu_table_entry __iommu_table[], __iommu_table_end[]; /* Dummy device used for NULL arguments (normally ISA). */ @@ -169,6 +178,8 @@ static __init int iommu_setup(char *p) #endif if (!strncmp(p, "pt", 2)) iommu_pass_through = 1; + if (!strncmp(p, "group_mf", 8)) + iommu_group_mf = 1; gart_parse_options(p); |