Re: [Xen-users] ARM: Xen on Vexpress

[Jeenu Viswambharan <Jeenu.Viswambharan@xxxxxxx>]

On Tue, Jul 01, 2014 at 17:09:22, Ian Campbell wrote:
> On Mon, 2014-06-30 at 13:21 +0100, Jeenu Viswambharan wrote:
> > On Mon, Jun 30, 2014 at 11:27:11, Ian Campbell wrote:
> > > http://community.arm.com/groups/processors/blog/2014/03/28/virtualization-on-arm-with-xen
> > >  has an example initscript in it which seems to suggest that
> > >         mount -t devtmpfs dev /dev
> > >         /sbin/udevd --daemon
> > >         udevadm trigger --action=add
> > > should do the right thing (I was advising Andrew when he wrote
> > > that and it sounds familiar to me to). If you are going to skip
> > > the usual /sbin/init based setup then I would recommend you use
> > > something akin to the init.sh proposed in that blog post (it
> > > doesn't look like it is terribly openSUSE specific, but YMMV).
> >
> > Thanks. It looks like that helped. The VM creation no more prints
> > any error (about creating terminals, previously) when it returns the
> > shell prompt. 'xl list' lists a guest by name 'guest'. However, when
> > I execute 'xl console guest', the command goes dead; there are no
> > verbose logs even if I pass -vvv to xl.
> >
> > It's almost the same effect if I run the command 'xl -vvv create
> > guest.cfg -c', that it appears stuck and doesn't return prompt.
>
> [...]
>
> It's also worth double checking that you have a multiplatform kernel
> configuration with no DEBUG_LL options enabled, since any UART which
> that might point to will not exist within a guest. I think the option
> conflicts with CONFIG_MULTIPLATFORM so I guess it is unlikely that you
> have it enabled.

Crikey, Both CONFIG_MULTIPLATFORM and DEBUG_LL were enabled in my
config. I've disabled the latter for further runs. Thanks.

Another thing I realized was that I didn't use the 'losetup' command to
setup a backend for /dev/loop0.

Having made the fixes above, I'm now able to launch DomU, and later use
'xl console guest' to get a shell! Phew!

One hiccup is that I can't quit the shell from DomU, as it's init is
/bin/sh and it'll be killed on exit. Because I'm using the same file
system as Dom0, DomU wouldn't be able to start upstart either. So I
can't find a way to go back to Dom0 once I'm in DomU!

--
Jeenu

-- IMPORTANT NOTICE: The contents of this email and any attachments are 
confidential and may also be privileged. If you are not the intended recipient, 
please notify the sender immediately and do not disclose the contents to any 
other person, use it for any purpose, or store or copy the information in any 
medium.  Thank you.

ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered 
in England & Wales, Company No:  2557590
ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, 
Registered in England & Wales, Company No:  2548782

Attachment: xl.console.log
Description: xl.console.log

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxx
http://lists.xen.org/xen-users