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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2020-01-02 01:18:22 +0100 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2020-01-07 14:05:58 +0100 |
| commit | e2726daea583d81e447b71e09b79e67f618d6152 (patch) | |
| tree | f89647951eccc13b812a8f43b92a4e04664463f5 /drivers/iommu/intel-iommu.c | |
| parent | iommu/vt-d: Use iova over first level (diff) | |
| download | linux-e2726daea583d81e447b71e09b79e67f618d6152.tar.xz linux-e2726daea583d81e447b71e09b79e67f618d6152.zip | |
iommu/vt-d: debugfs: Add support to show page table internals
Export page table internals of the domain attached to each device.
Example of such dump on a Skylake machine:
$ sudo cat /sys/kernel/debug/iommu/intel/domain_translation_struct
[ ... ]
Device 0000:00:14.0 with pasid 0 @0x15f3d9000
IOVA_PFN PML5E PML4E
0x000000008ced0 | 0x0000000000000000 0x000000015f3da003
0x000000008ced1 | 0x0000000000000000 0x000000015f3da003
0x000000008ced2 | 0x0000000000000000 0x000000015f3da003
0x000000008ced3 | 0x0000000000000000 0x000000015f3da003
0x000000008ced4 | 0x0000000000000000 0x000000015f3da003
0x000000008ced5 | 0x0000000000000000 0x000000015f3da003
0x000000008ced6 | 0x0000000000000000 0x000000015f3da003
0x000000008ced7 | 0x0000000000000000 0x000000015f3da003
0x000000008ced8 | 0x0000000000000000 0x000000015f3da003
0x000000008ced9 | 0x0000000000000000 0x000000015f3da003
PDPE PDE PTE
0x000000015f3db003 0x000000015f3dc003 0x000000008ced0003
0x000000015f3db003 0x000000015f3dc003 0x000000008ced1003
0x000000015f3db003 0x000000015f3dc003 0x000000008ced2003
0x000000015f3db003 0x000000015f3dc003 0x000000008ced3003
0x000000015f3db003 0x000000015f3dc003 0x000000008ced4003
0x000000015f3db003 0x000000015f3dc003 0x000000008ced5003
0x000000015f3db003 0x000000015f3dc003 0x000000008ced6003
0x000000015f3db003 0x000000015f3dc003 0x000000008ced7003
0x000000015f3db003 0x000000015f3dc003 0x000000008ced8003
0x000000015f3db003 0x000000015f3dc003 0x000000008ced9003
[ ... ]
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/intel-iommu.c')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 51d60bad0b1d..609931f6d771 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -396,7 +396,7 @@ EXPORT_SYMBOL_GPL(intel_iommu_gfx_mapped); #define DUMMY_DEVICE_DOMAIN_INFO ((struct device_domain_info *)(-1)) #define DEFER_DEVICE_DOMAIN_INFO ((struct device_domain_info *)(-2)) -static DEFINE_SPINLOCK(device_domain_lock); +DEFINE_SPINLOCK(device_domain_lock); static LIST_HEAD(device_domain_list); #define device_needs_bounce(d) (!intel_no_bounce && dev_is_pci(d) && \ @@ -2513,7 +2513,7 @@ static void domain_remove_dev_info(struct dmar_domain *domain) spin_unlock_irqrestore(&device_domain_lock, flags); } -static struct dmar_domain *find_domain(struct device *dev) +struct dmar_domain *find_domain(struct device *dev) { struct device_domain_info *info; |