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

[Jeenu Viswambharan <Jeenu.Viswambharan@xxxxxxx>]

On Mon, Jun 23, 2014 at 12:10:19, Stefano Stabellini wrote:
> On Mon, 23 Jun 2014, Stefano Stabellini wrote:
> > On Mon, 23 Jun 2014, Jeenu Viswambharan wrote:
> > > I don't! Dom0 logs are mostly silent about Xen.
> >
> > You are missing all the earlyboot stuff from your logs.
> > Try passing earlyprintk to the dom0 kernel command line.
>
> FYI from "xen_netfront: Initialising Xen virtual ethernet driver" I
> gather that the Xen subsystem most probably initialized correctly.
> So it might actually be just a misconfiguration of agetty for hvc0 in
> upstart.

It appears to be a problem with Upstart. I don't think it even runs in
the first place. I can't seem to start it manually either.

When I passed init=/bin/sh, and then 'getty --autologin root hvc0' at
the root prompt, I was dropped to a new shell, which I think is the
intended result?

Moving on, I tried to run xl command, which then reported libyajl and
libfdt as missing dependencies. I noted that they aren't present in the
file system either. Later I created the file system again, passing the
package names explicitly to debootstrap.

With that, 'xl' gives me a list of sub-commands. However, when I try to
execute any of them, it reports the following error:

  root@(none):~# xl list
  xc: error: Could not obtain handle on privileged command interface (2 = No 
such file or directory): Internal error
  libxl: error: libxl.c:92:libxl_ctx_alloc: cannot open libxc handle: No such 
file or directory
  cannot init xl context

A quick grep under the tools directory showed that it's because libxc
failed to open /proc/xen/privcmd. The file seems missing in the proc
tree but I don't see any messages of failure (say, about registering the
file). Any idea what's going wrong?

--
Jeenu

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