I don't know about PDB, but you'll see the permissions problem if 
gdbserver-xen is not run as root.

-Kip

On 8/31/05, Tim Newsham <newsham@lava.net> wrote:
> 
> > Sources from this week give me:
> > [root@cirrus root]# uname -a
> > Linux cirrus.x0d.com <http://cirrus.x0d.com> 2.6.12-xen0 #1 Mon Aug 29 
> 10:04:03 HST 2005 i686 i686
> > i386 GNU/Linux
> > [root@cirrus root]# gdbserver-xen 127.0.0.1:9999 <http://127.0.0.1:9999>--attach 1
> > Dom0 operation failed -- need to rebuild the user-space tool set?
> > dom0 op failed: Permission denied
> > Cannot attach to domain 1: Permission denied (13)
> >
> > I did a clean rebulid of gdbserver-xen. Are the sources out of sync
> > with the xen 'visor?
> 
> I gave pdb a whilr for good measure and it is similarly not working:
> [root@cirrus libxendebug]# pdb 9999
> ERROR: Could not obtain handle on privileged command interface (2 = No
> such file or directory)
> (pdb) error opening xc interface: 2 (No such file or directory)
> ERROR: do_evtchn_op: HYPERVISOR_event_channel_op failed: -1
> (pdb) evtchn_bind_virq error!
> failure: [evtchn_bind_virq error]
> 
> This with a freshly built libxendbug and pdb.
> 
> Tim Newsham
> http://www.lava.net/~newsham/
> 
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