From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1EIiBJ-0006gy-KD for user-mode-linux-devel@lists.sourceforge.net; Fri, 23 Sep 2005 00:41:17 -0700 Received: from smtp.osdl.org ([65.172.181.4]) by mail.sourceforge.net with esmtps (TLSv1:DES-CBC3-SHA:168) (Exim 4.44) id 1EIiBI-0000a3-Bg for user-mode-linux-devel@lists.sourceforge.net; Fri, 23 Sep 2005 00:41:17 -0700 From: Andrew Morton Subject: Re: [uml-devel] [PATCH 06/10] uml: run mconsole "sysrq" in process context Message-Id: <20050923004031.6b7da42a.akpm@osdl.org> In-Reply-To: <20050922203743.GA11648@ccure.user-mode-linux.org> References: <200509211923.21861.blaisorblade@yahoo.it> <20050921172857.10219.71071.stgit@zion.home.lan> <20050921205028.GB9918@ccure.user-mode-linux.org> <200509222120.20922.blaisorblade@yahoo.it> <20050922203743.GA11648@ccure.user-mode-linux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit 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: Fri, 23 Sep 2005 00:40:31 -0700 To: Jeff Dike Cc: blaisorblade@yahoo.it, user-mode-linux-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Jeff Dike wrote: > > On Thu, Sep 22, 2005 at 09:20:20PM +0200, Blaisorblade wrote: > > sysrq t is broken (and stays), > > There's a fix on the way for that. This has nothing to do with interrupt > context anyway. > > > but additionally there are some warnings from > > some commands (enable sleep inside spinlock checking and spinlock debugging), > > which go to the down_read inside handle_page_fault IIRC. So try to run in > > process context. > > Which ones? They should be fixed. > > It is fairly fundamental to sysrq that it work from interrupt context. You > may be diagnosing a system which can't context switch any more. > > This patch should be dropped, and the real problems fixed. > Well Linus has just merged this patch. If you hadn't removed me from the cc yesterday this would not have happened. ------------------------------------------------------- SF.Net email is sponsored by: Tame your development challenges with Apache's Geronimo App Server. Download it for free - -and be entered to win a 42" plasma tv or your very own Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel