Re: [Xen-devel] [PATCH v7 1/3] AMD/IOMMU: allocate one device table per PCI segment

[Jürgen Groß <jgross@xxxxxxxx>]

On 07.10.19 12:49, Jan Beulich wrote:
> On 07.10.2019 12:19, Jürgen Groß  wrote:
> > On 07.10.19 12:03, Jan Beulich wrote:
> > > I appreciate the ack, but I think I'd prefer to not make use of it
> > > if at all possible under these conditions. Instead I'd like us to
> > > reach some common ground here. Seeing that we're past the deadline
> > > already, Jürgen's release ack will now be needed anyway. Jürgen -
> > > would you be fine with settling on this taking a few more days,
> > > and then still allow in this series? Or is trying to soon find a
> > > resolution here pointless as you'd rather not see this go in
> > > anymore?
> > As it isn't a completely trivial patch series I'd like to know what
> > the gain would be: is it just a "nice to have", does it solve a
> > theoretical (not to be expected) problem, or do you think it will
> > be needed to be backported if I say "no"?
> The 3rd patch in this series is what is really wanted, to close
> a previously just theoretical but (I think) now in principle
> possible gap with device table initialization, potentially
> allowing untranslated DMA or interrupt requests to make it
> through when not so intended. If this was to be backported, I
> think I'd try re-basing patches 2 and 3 onto a tree without
> patch 1, but doing so for master doesn't look (to me) to be a
> very reasonable step, seeing that patch 1 had been there first.
Okay, thanks for the explanation.

Needing some more days is fine for me, so trying to find a solution soon
absolutely makes sense. :-)


Juergen

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