Re: [Xen-devel] [PATCH v7b 00/25] dom0less step1: boot multiple domains from device tree

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Wed, 14 Nov 2018, Julien Grall wrote:
> On 13/11/2018 17:51, Stefano Stabellini wrote:
> > Hi all,
> 
> Hi Stefano,
> 
> > This is first step toward "dom0less" as discussed in the various
> > certifications related threads and discussions.
> > 
> > The goal of this series is to enable Xen to boot multiple domains in
> > parallel, in addition to dom0, out of information found on device tree.
> > 
> > The device tree based boot protocol is extended to carry information
> > about DomUs. Based on that information, Xen creates and starts one or
> > more DomUs. DomUs created this way don't have access to xenstore for the
> > moment. This is actually OK, because this is meant for mission critical
> > applications that typically only access directly assigned devices. They
> > cannot tolerate interference or increased IRQ latency due to PV
> > protocols. Device assignment is not actually covered by this series, it
> > will be added later.
> > 
> > DomUs can print to the Xen serial using the CONSOLEIO hypercalls. A
> > virtual PL011 is also emulated for them so that they can use their
> > regular PL011 driver. This allows unmodified guests to run as Xen on ARM
> > guests -- no Xen support needed at all. Console input also comes from
> > the Xen serial: the Ctrl-AAA switching mechanism is extended to switch
> > among domUs, dom0, and Xen.
> > 
> > In this version of the series, I reordered the patches to make sure they
> > are all bisectable.
> 
> The series is now merged.

Thank you!

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