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Re: [Xen-devel] [PATCH] Paravirt framebuffer use xvc as console [4/5]

To: Jeremy Katz <katzj@xxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH] Paravirt framebuffer use xvc as console [4/5]
From: Steven Smith <sos22-xen@xxxxxxxxxxxxx>
Date: Wed, 6 Sep 2006 10:17:38 +0100
Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Markus Armbruster <armbru@xxxxxxxxxx>, sos22@xxxxxxxxxxxxx, Amos Waterland <apw@xxxxxxxxxx>
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> > > This is the patch from Amos Waterland for the xenconsole to
> > > use /dev/xvc0 instead of taking over ttys.  I've fixed a few places
> > > which needed to check for XVC mode in addition to serial mode.  Also,
> > > until LANANA responds with an official minor, I've adjusted it to use
> > > char 250/187 (in the experimental range) as opposed to 204/187.
> > > 
> > > (Should be identical to this patch from last time)
> > Does this have anything to do with the virtual framebuffer work, or
> > does it stand alone?
> It stands alone, but without it, the framebuffer bits get a little
> confusing to actually try to have used as the console.
What goes wrong?

> > > @@ -194,11 +209,17 @@ static int __init xen_console_init(void)
> > >           kcons_info.write = kcons_write_dom0;
> > >   } else {
> > >           if (xc_mode == XC_DEFAULT)
> > > -                 xc_mode = XC_TTY;
> > > +                 xc_mode = XC_XVC;
> > Not convinced we want to change the default until a little while after
> > the rest of the patch gets merged.
> The default *HAS* to be changed -- otherwise, the xvc console tries to
> take over ttys (which is really really really wrong in the guest)
So why have we survived this far without it?  If XC_TTY is completely
broken, why not remove it completely?

Steven.

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