[PATCH 1/1][SRU][J] UBUNTU: SAUCE: iommu: intel-ipu: use IOMMU passthrough mode for Intel IPUs

Kai-Heng Feng kai.heng.feng at canonical.com
Thu Mar 10 02:26:40 UTC 2022


On Wed, Mar 9, 2022 at 10:14 PM Paolo Pisati <paolo.pisati at canonical.com> wrote:
>
> On Wed, Mar 09, 2022 at 03:08:17PM +0800, You-Sheng Yang wrote:
> > On 2/23/22 10:29, Kai-Heng Feng wrote:
> > > Many non-external facing devices also use DMA mode, so this is not a
> > > good justification.
> > >
> > > Can we ask whether PT mode is used for IPU6 under ChromeOS and Windows?
> > >
> > > Kai-Heng
> >
> > Has confirmed with Intel that ChromeOS is also using passthrough mode.
>
> Are you both happy with the outcome? Shall i apply the patch?

I assume Google already reviewed the approach so the security impact
should be minimal.

So please apply the patch, thanks!

Kai-Heng

> --
> bye,
> p.



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