[Gllug] Serial debugging

Richard W.M. Jones rich at annexia.org
Sun Jun 5 14:36:13 UTC 2011


On Sun, Jun 05, 2011 at 10:34:23AM +0100, James Courtier-Dutton wrote:
> On 4 June 2011 13:59, Adrian McMenamin <adrian at mcmen.demon.co.uk> wrote:
> > I want to debug a linux kernel on a serial terminal but one of the
> > machines I want to use does not have a serial port so it seems the
> > trusty null modem cable won't help (it's a laptop too, so I cannot
> > really just plug a cheap PCI card in)
> >
> > Alternatives seem to be:
> >
> > USB -> serial (does this work, searching suggests I need to configure
> > the USB port in a special way but it's not clear)
> >
> > Firewire <-> firewire (there seems to be kernel support for this but is
> > it practical, anyone know)
> >
> > Something else? Anyone know?
> >
>
> Why can't you debug this by running the linux kernel in a kvm
> virtual machine?

We don't know what he's debugging.  If he's debugging a device driver
using KVM won't be any help.

Rich.

-- 
Richard Jones
Red Hat
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