Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756692AbZLUP7T (ORCPT ); Mon, 21 Dec 2009 10:59:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756124AbZLUP7R (ORCPT ); Mon, 21 Dec 2009 10:59:17 -0500 Received: from mx1.redhat.com ([209.132.183.28]:22505 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756581AbZLUP7Q (ORCPT ); Mon, 21 Dec 2009 10:59:16 -0500 Date: Mon, 21 Dec 2009 17:53:04 +0100 From: Oleg Nesterov To: Jan Kiszka Cc: Roland McGrath , Frederic Weisbecker , linux-kernel@vger.kernel.org, Alan Stern , utrace-devel@redhat.com, Avi Kivity Subject: Re: x86: do_debug && PTRACE_SINGLESTEP broken by 08d68323d1f0c34452e614263b212ca556dae47f Message-ID: <20091221165304.GA5061@redhat.com> References: <20091218005650.GA20667@redhat.com> <20091218030601.GB16470@nowhere> <20091218172747.GA10924@redhat.com> <20091218200503.2CA0DF9A4@magilla.sf.frob.com> <20091218223230.GA1853@redhat.com> <4B2F4C58.8010303@web.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4B2F4C58.8010303@web.de> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 847 Lines: 28 On 12/21, Jan Kiszka wrote: > > Oleg Nesterov wrote: > > > > Hmm. Now I see how wrong I was when I said this code is "obviously wrong" ;) Yes, it is easy to blame the code you don't understand. My apologies to all. > > I'll add the debugging printk's and report the output. Sorry for delay, > > can't do this today. > > Can't reproduce, runs fine here with with 2.6.33-rc1 as both host&guest > and qemu-kvm latest git. Host uses kvm-intel. Everything runs fine under 2.6.32 as a _host_ kernel. Previously I did the testing under 2.6.26.5-45.fc9. Sorry for noise, thanks all for your help. Oleg. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/