Re: [Xen-devel] [GSoC] Xen on ARM: create multiple guests from device tree

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Tue, 28 Mar 2017, Stefano Stabellini wrote:
> Hello Luca,
> 
> did you manage to make any progress on the number of cores exposed by the 
> model?
> 
> Thank you for the Makefile patch! If you have time, I encourage you to
> fix one of the other small outstanding bugs, for example XEN-20 or
> XEN-11 (just the ability to load a Dom0 kernel bigger than 128MB or just
> the ability to parse the new image_size field introduced in Linux 3.17).
> 
> Finally, I would like to remind you of the upcoming deadline for
> applications submissions, which is the 3rd of April for GSoC, see:
> 
> http://marc.info/?l=xen-devel&m=149071502330534
> 
> The GSoC application system is
> https://summerofcode.withgoogle.com/get-started/.
> 
> Please give a look at the Xen Project application template here:
> 
> https://wiki.xenproject.org/wiki/GSoC_Student_Application_Template
> 
> It also includes an "Implementation Plan", where you have the chance to
> explain the implementation plan for the project you would like to apply
> for.

FYI I added some more information on this project here:
http://marc.info/?l=xen-devel&m=149074542307880



> 
> On Thu, 23 Mar 2017, Luca Miccio wrote:
> > Hello Julien
> > > Il giorno 23 mar 2017, alle ore 15:49, Julien Grall 
> > > <julien.grall@xxxxxxx> ha scritto:
> > > 
> > > Hello Luca,
> > > 
> > > On 23/03/17 02:23, Luca Miccio wrote:
> > >> I tried also this method but i had the same error. So i came up with the
> > >> idea of removing the
> > >> psci method from the configure and also from the dtsi file that i have
> > >> changed.
> > > 
> > > I guess you are using only 1 core in this case. Am I right?
> > > 
> > No, i am using 4 cores, with —cores option and i think that i am using 
> > actually 4 cores
> > because on the model “control panel” i have 4 green triangles which ones of 
> > them should
> > represent the number of cores and their status. 
> > It is only my opinion so, please, tell me if i am wrong.
> > >> 
> > >> With this configuration the model booted up correctly, even if the
> > >> process took about 10 minutes.
> > >> Just for my personal knowledge: it is normal that the boot is very slow?
> > >> Is the rootfs that i’m using?
> > > 
> > > Booting a full distro on the model can be slow. Usually I write my own 
> > > initscript to start the necessary daemon and skip systemd.
> > > 
> > > 42sh> cat /root/init.sh
> > > 
> > > set -x
> > > mount -t proc proc  /proc
> > > mount -t devtmpfs dev /dev
> > > 
> > > export HOME=/root
> > > 
> > > rm -rf /var/run/xenstore
> > > rm -rf /var/run/xen
> > > 
> > > /etc/init.d/xencommons start
> > > 
> > > exec /bin/bash
> > > 
> > > -------------------
> > > 
> > > And I pass init=/root/init.sh on the Linux kernel command line.
> > > 
> > That helped a lot, thank you.
> > > Cheers,
> > > 
> > > -- 
> > > Julien Grall
> > 
> > Luca.
> >

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