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

[Jan Beulich <jbeulich@xxxxxxxx>]

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.

Jan

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel