Re: [Xen-devel] [PATCH 17/18] xen/arm: Resume Dom0 after Xen resumes

[Mirela Simonovic <mirela.simonovic@xxxxxxxxxx>]

On Fri, Nov 16, 2018 at 11:33 AM Mirela Simonovic
<mirela.simonovic@xxxxxxxxxx> wrote:
>
> Hi Julien,
>
> On Thu, Nov 15, 2018 at 9:31 PM Julien Grall <julien.grall@xxxxxxx> wrote:
> >
> > Hi,
> >
> > On 11/12/18 11:30 AM, Mirela Simonovic wrote:
> > > The resume of Dom0 should always follow Xen's resume. This is
> > > done by unblocking the first vCPU of Dom0.
> >
> > Please explain why you always need to resume Dom0 afterwards.
> >
>
> We don't need to, but that is what is promised in the design spec.
>

To be more specific - a domU that doesn't depend on dom0 can resume
and work happily without dom0 being resumed, i.e. just Xen and domU
resume. So patch "[PATCH 17/18] xen/arm: Resume Dom0 after Xen
resumes" is not a must (when there are no PV drivers involved).

> > Cheers,
> >
> > --
> > Julien Grall

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