From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50434) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UuIK6-0005ow-CC for qemu-devel@nongnu.org; Wed, 03 Jul 2013 04:22:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UuIK2-00072e-PN for qemu-devel@nongnu.org; Wed, 03 Jul 2013 04:21:58 -0400 Received: from mx1.redhat.com ([209.132.183.28]:19296) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UuIK2-00072G-Fd for qemu-devel@nongnu.org; Wed, 03 Jul 2013 04:21:54 -0400 Message-ID: <51D3DF1A.4070306@redhat.com> Date: Wed, 03 Jul 2013 10:21:46 +0200 From: Paolo Bonzini MIME-Version: 1.0 References: <1372833874-21416-1-git-send-email-mjt@msgid.tls.msk.ru> <51D3CF36.2050302@redhat.com> <51D3DC57.7070205@msgid.tls.msk.ru> In-Reply-To: <51D3DC57.7070205@msgid.tls.msk.ru> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v2 1/2] trap signals for "-serial mon:stdio" List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Michael Tokarev Cc: Anthony Liguori , qemu-devel@nongnu.org Just a couple more suggestions. > /mjt > > --- a/qemu-options.hx > +++ b/qemu-options.hx > @@ -825,7 +825,11 @@ a text mode. Generally only the VGA device models support text mode. > @item none > Do not display video output. The guest will still see an emulated > graphics card, but its output will not be displayed to the QEMU > -user. This option differs from the -nographic option in that it > +user. The fact that we have no display is passed to firmware and > +affects a few other places depending on the target architecture, > +like switching console output to serial console or disabling keyboard > +input. Add an empty line here. > +This option differs from the -nographic option in that it > only affects what is done with video output; -nographic also changes > the destination of the serial and parallel port data. > @item vnc > @@ -841,10 +845,15 @@ STEXI > @findex -nographic > Normally, QEMU uses SDL to display the VGA output. With this option, > you can totally disable graphical output so that QEMU is a simple > -command line application. The emulated serial port is redirected on > -the console and muxed with the monitor (unless redirected elsewhere > -explicitly). Therefore, you can still use QEMU to debug a Linux kernel > -with a serial console. > +command line application. When this option is specified, unless > +redirected explicitly, the emulated serial port and the monitor > +are multiplexed on the console (stdio). When this option is specified, the emulated serial port and the monitor are by default multiplexed on the console (stdio). > +This option is equivalent for equivalent to > +@example > +-display none -serial mon:stdio -parallel none > +@end example > +Since even with no display, emulated serial port is still available, > +you can use QEMU to debug a Linux kernel with a serial console. I would just remove these two lines. Paolo