Re: [RFC 0/2] arm-smmu-v3 tlbi-on-map option

From: Jean-Philippe Brucker
Date: Thu Jul 13 2017 - 05:26:48 EST

On 12/07/17 23:07, Michael S. Tsirkin wrote:
> I think using hardware support for nesting is the right final
> solution. It will take some time though. Given this, what should
> we do meanwhile?
> Assuming that's the final destination, a simple quirk like this
> seems to be preferable to virtio-iommu which we'll never be
> able to offload to hardware.

That's not entirely true. virtio-iommu will have an extension for hardware
nesting support. It was presented in my initial proposal, and I've made
significant progress since then.