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From: Christian Borntraeger <borntraeger@de.ibm.com>
To: Rusty Russell <rusty@rustcorp.com.au>
Subject: Re: [RFC PATCH 4/5] hvc_console: Add tty window resizing
Date: Thu, 16 Oct 2008 13:58:40 +0200
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Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>,
       Benjamin Herrenschmidt <benh@kernel.crashing.org>,
       Linux PPC devel <linuxppc-dev@ozlabs.org>,
       Jeremy Fitzhardinge <jeremy@goop.org>,
       "Ryan S. Arnold" <rsa@us.ibm.com>, LKML <linux-kernel@vger.kernel.org>,
       Heiko Carstens <heiko.carstens@de.ibm.com>,
       Martin Schwidefsky <schwidefsky@de.ibm.com>
References: <20081014091247.433079967@linux.vnet.ibm.com> <20081014091413.306993844@linux.vnet.ibm.com> <200810162241.29883.rusty@rustcorp.com.au>
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Am Donnerstag, 16. Oktober 2008 schrieb Rusty Russell:
> > The patch provides the hvc_resize() function to update the terminal
> > window dimensions (struct winsize) for a specified hvc console.
> > The function stores the new window size and schedules a function
> > that finally updates the tty winsize and signals the change to
> > user space (SIGWINCH).
> > Because the winsize update must acquire a mutex and might sleep,
> > the function is scheduled instead of being called from hvc_poll()
> > or khvcd.
> 
> I want this functionality for lguest, too.  But I don't see anything which 
> uses this call yet?   Are we going to use the config_change notifier from 
> virtio?  (Which IIRC neither S/390 nor lguest have plumbed in).

I have some prototype patches for virtio_console, but did not find the time to 
finish them.

Christian