Re: [Xen-devel] [PATCH 7/7] xen/arm: Restore IRQ affinity after hotplugging a CPU

[Dario Faggioli <dfaggioli@xxxxxxxx>]

On Fri, 2018-04-13 at 12:11 +0200, Mirela Simonovic wrote:
> Hi Dario,
> 
Hi,

> On Thu, Apr 12, 2018 at 6:49 PM, Dario Faggioli <dfaggioli@xxxxxxxx>
> wrote:
> No worries, my commit message should be more understandable and your
> answer helps me identify what's unclear. I'll try to explain below.
> 
> This is about suspend/resume implementation for ARM that is based on
> PSCI and targeted for embedded systems as well. Each guest could have
> its own wake-up devices/interrupts (passthrough) that could trigger
> the resume. So the wake-up interrupt in this context triggers the
> resume. By 'all interrupts' I meant interrupts that are left enabled
> by guests upon suspend (those interrupts could wake-up the system).
> Here is the PSCI-based suspend to RAM design spec:
> https://lists.xenproject.org/archives/html/xen-devel/2017-12/msg01574
> .html
> 
Ah, so you are talking about suspend/resume of _the_guest_! This was
actually the bit of information that I was missing. :-)

This was, probbly, partly due to me not being familiar with ARM, and to
the fact that I haven't really looked at the rest of the series
probably.

Still, I think it would not hurt for the changelog to be a bit more
explitic and clear.

Regards,
Dario
-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
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Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Software Engineer @ SUSE https://www.suse.com/

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