Re: [PATCH v2 6/6] KVM: arm/arm64: vgic: Allow configuration of interrupt groups

Peter Maydell
2018-07-10T09:17:24Z

On 10 July 2018 at 10:12, Auger Eric <eric.auger@redhat.com> wrote:
> Hi Christoffer, Marc,
>
> On 07/10/2018 10:33 AM, Marc Zyngier wrote:
>> On 09/07/18 23:48, Christoffer Dall wrote:
>>> What I would really like to know is whether this is really an issue or
>>> not. Do people who run products based on KVM, such as RHEV, have any
>>> expectations about cross-kernel version migration?
>>
>> I'd like to know as well.
>
> Sorry I did not have time to review the series properly. My
> understanding is we generally care about migration between different
> kernels. For the ITS, we made the IIDR writable too to manage the ABI
> version properly. See ab01c6bdacc43c41c6b326889f4358f5afc38bf9. But
> maybe I missed the crux of the matter.

I think the question is whether we're doing this because
we think hypothetical users care, or because we know actual
real in-production users really care...

thanks
-- PMM