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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2020-05-16 14:20:56 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2020-05-18 15:37:26 +0200 |
| commit | 4c0fa5bfca7eba479002f0a1ecd1bf7631b2f5da (patch) | |
| tree | 82cb125a3cb9cdab23839bc9b8c4d7ab478e7df3 /drivers/memory | |
| parent | 8a1d824625402b3ef3c3e5965663354ff0394d86 (diff) | |
iommu/vt-d: debugfs: Add support to show inv queue internals
Export invalidation queue internals of each iommu device through the
debugfs.
Example of such dump on a Skylake machine:
$ sudo cat /sys/kernel/debug/iommu/intel/invalidation_queue
Invalidation queue on IOMMU: dmar1
Base: 0x1672c9000 Head: 80 Tail: 80
Index qw0 qw1 status
0 0000000000000004 0000000000000000 0000000000000000
1 0000000200000025 00000001672be804 0000000000000000
2 0000000000000011 0000000000000000 0000000000000000
3 0000000200000025 00000001672be80c 0000000000000000
4 00000000000000d2 0000000000000000 0000000000000000
5 0000000200000025 00000001672be814 0000000000000000
6 0000000000000014 0000000000000000 0000000000000000
7 0000000200000025 00000001672be81c 0000000000000000
8 0000000000000014 0000000000000000 0000000000000000
9 0000000200000025 00000001672be824 0000000000000000
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20200516062101.29541-14-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/memory')
0 files changed, 0 insertions, 0 deletions