Re: [PATCH v4 0/6] virtio core DMA API conversion

From: Benjamin Herrenschmidt
Date: Tue Nov 10 2015 - 01:20:17 EST

On Mon, 2015-11-09 at 18:18 -0800, Andy Lutomirski wrote:
> Which leaves the special case of Xen, where even preexisting devices
> don't bypass the IOMMU. Can we keep this specific to powerpc and
> sparc? On x86, this problem is basically nonexistent, since the IOMMU
> is properly self-describing.
> IOW, I think that on x86 we should assume that all virtio devices
> honor the IOMMU.

You don't like performances ? :-)

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