Re: [PATCH v6 0/7] Add virtio-iommu driver

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On Tue, Dec 11, 2018 at 10:31:01AM -0800, Christoph Hellwig wrote:
> On Tue, Dec 11, 2018 at 06:20:57PM +0000, Jean-Philippe Brucker wrote:
> > Implement the virtio-iommu driver, following specification v0.9 [1].
> > 
> > Only minor changes since v5 [2]. I fixed issues reported by Michael and
> > added tags from Eric and Bharat. Thanks!
> > 
> > You can find Linux driver and kvmtool device on v0.9 branches [3],
> > module and x86 support on virtio-iommu/devel. Also tested with Eric's
> > QEMU device [4].
> 
> Just curious, what is the use case for it?

If what I saw is any indication, it allows a very simple implementation
of page table shadowing on the host, at the cost of not being able to
accelerate with a hardware nested page tables support when available.

-- 
MST
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