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SubjectRe: [PATCH] virtio_console: Add support for multiple ports for generic guest and host communication
On (Thu) Oct 01 2009 [12:28:30], Christian Borntraeger wrote:
> Am Mittwoch 30 September 2009 19:13:21 schrieben Sie:
> > On (Tue) Sep 29 2009 [15:31:23], Christian Borntraeger wrote:
> > > Am Dienstag 29 September 2009 15:09:50 schrieb Amit Shah:
> > > > Great, thanks. However I was thinking of moving this init to the
> > > > probe() routine instead of in the init_conosle routine just because
> > > > multiple consoles can be added and we don't want to init this each
> > > > time.. just once in probe is fine.
> > >
> > > If you have new patch CC me and I can give it a spin.
> >
> > Hey Christian,
> >
> > I have a new patch that changes a few things:
> > - moves the put_char fix to probe instead of doing it in
> > init_port_console(), which gets called on each console port found.
> > - uses port->id instead of a static hvc_vtermno to pass on a value to
> > hvc_alloc(). Motivation explained within comments in the code.
> > - A few other changes that introduce and make use of port->vcon instead
> > of accessing the static virtconsole directly -- aimed at easing future
> > fix to have multiple virtio-console devices.
> >
> > It would be great if you could test this.
>
> With the latest git kernel + your patch I sometmes get a completely frozen
> console. In the dump there is
>
> <3>virtio_console virtio0: output:id 68 is not a head!
>
> Seems that I can reproduce it with large amounts of output (find / for example)
> Without your patch everything is fine.

Do you mean the entire patch? Or just the last snippet that I sent?

I'm testing things using a few days old linux-next; I guess you're
seeing this with Linus' git tree?

I'll try that.

Amit


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