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| author | Joerg Roedel <joerg.roedel@amd.com> | 2009-05-20 12:21:42 +0200 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-05-28 17:49:56 +0200 |
| commit | fefda117ddb324b872312f1f061230e627c9f5ee (patch) | |
| tree | e0c82c666562a4d285b8a87bbf260b68518651d8 /arch/x86/include | |
| parent | 41fb454ebe6024f5c1e3b3cbc0abc0da762e7b51 (diff) | |
amd-iommu: add amd_iommu_dump parameter
This kernel parameter will be useful to get some AMD IOMMU related
information in dmesg that is not necessary for the default user but may
be helpful in debug situations.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/amd_iommu_types.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/include/asm/amd_iommu_types.h b/arch/x86/include/asm/amd_iommu_types.h index 95c8cd9d22b..89dfb3793ed 100644 --- a/arch/x86/include/asm/amd_iommu_types.h +++ b/arch/x86/include/asm/amd_iommu_types.h @@ -194,6 +194,12 @@ #define PD_DMA_OPS_MASK (1UL << 0) /* domain used for dma_ops */ #define PD_DEFAULT_MASK (1UL << 1) /* domain is a default dma_ops domain for an IOMMU */ +extern bool amd_iommu_dump; +#define DUMP_printk(format, arg...) \ + do { \ + if (amd_iommu_dump) \ + printk(KERN_INFO "AMD IOMMU: " format, ## arg); \ + } while(0); /* * This structure contains generic data for IOMMU protection domains |