iommu/vt-d: Report domain usage in sysfs

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Debugging domain ID leakage typically requires long running tests in
order to exhaust the domain ID space or kernel instrumentation to
track the setting and clearing of bits.  A couple trivial intel-iommu
specific sysfs extensions make it much easier to expose the IOMMU
capabilities and current usage.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Alex Williamson 2015-07-14 15:24:53 -06:00 • committed by Joerg Roedel

parent 50690762cf

commit 2238c0827a

1 changed files with 21 additions and 0 deletions

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drivers/iommu/intel-iommu.c

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