Hi,
this patch-set introduces a new function into the iommu-api:
iommu_commit(domain);
It needs to be called whenever a some code changed a domain (either by
attaching/detaching devices or by mapping/unmapping pages in
the domain).
IOMMU drivers can implement the new commit-callback to coalesce any
cache flushing on the CPU and in the IOMMU hardware which is necessary
after changes have been made to a domain.
David, I think especially VT-d can benefit from such a callback. I will
implement support for it in the AMD IOMMU driver and post a patch-set
soon.
Any comments, thoughts?
Thanks,
Joerg
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