From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1CtOiH-00072w-VQ for user-mode-linux-devel@lists.sourceforge.net; Tue, 25 Jan 2005 03:18:25 -0800 Received: from dsl092-053-140.phl1.dsl.speakeasy.net ([66.92.53.140] helo=grelber.thyrsus.com) by sc8-sf-mx1.sourceforge.net with esmtp (TLSv1:AES256-SHA:256) (Exim 4.41) id 1CtOiG-00021n-C6 for user-mode-linux-devel@lists.sourceforge.net; Tue, 25 Jan 2005 03:18:25 -0800 From: Rob Landley Subject: Re: [uml-devel] SIGSEGV and SA_NODEFER References: <200501182128.j0ILSgxi013966@ccure.user-mode-linux.org> <20050125084506.GA562@bytesex> <200501251116.18892.blaisorblade@yahoo.it> In-Reply-To: <200501251116.18892.blaisorblade@yahoo.it> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200501250516.39648.rob@landley.net> Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Tue, 25 Jan 2005 05:16:39 -0500 To: Blaisorblade Cc: Gerd Knorr , user-mode-linux-devel@lists.sourceforge.net On Tuesday 25 January 2005 05:16 am, Blaisorblade wrote: > > > > I'm using stdin/stdout as the console. (And even though you put it > > > > into raw mode, I still can't ctrl-c out of the processs I'm running, > > > > either.) > > > > Hmm, ^C works perfectly fine for me. Usually I work with a virtual > > serial line as console ("console=ttyS0 ssl0=fd:0,fd:1 con=pts"), works > > better than the uml console as applications don't expect the linux vt > > ioctls work on these devices ;) > > About this, Rob: do you use /dev/console in the inittab line? If you do, > then that's the problem - it should become a FAQ somewhere I guess. I'm not using init, I'm running my script as init. So I'd guess it's using /dev/console, yes. I know that /dev/console is funky. That's why I want the option to let ctrl-c kill the whole vmlinux instance. (Possibly as a command line option.) I'll look into that later... > > I'm still at 2.6.10 + patches though, not yet at 2.6.11-rc2. > > > > > However, I'm not sure that patch is at fault... there is a locking > > > problem which *could* maybe be responsible of this...; I actually > > > wonder about why this locking problem has never shown up in reports or > > > in testing (it exists, only it's a race condition)... there is a > > > situation where it shows up with a side effect, indeed, so the problem > > > exists... > > > > Heavy swapping (see other mail) and thus some stuff running _very_ slow > > might open such race windows wide enougth that one actually hits them. > > Yes, my only doubt was that he seemed to mean that the guest was swapping, > and *this* different situation would have the opposite effect, probably. Host is swapping, client configured without even support for swap. (If I can get the darn client vmlinux down to 1 megabyte, I'd be thrilled. Didn't somebody once make the entire block layer configurable out once? With hostfs, I don't need it...) Rob ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel