From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Tue, 17 Jun 2014 21:45:01 +0800 From: Real Name Message-ID: <20140617134501.GA3604@name> References: <538F275B.7000508@nod.at> <1401941724-6703-1-git-send-email-enjoymindful@gmail.com> <1401941724-6703-2-git-send-email-enjoymindful@gmail.com> <5390E5FD.5030400@nod.at> <20140609054556.GA2465@name> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140609054556.GA2465@name> Sender: linux-kernel-owner@vger.kernel.org Subject: Re: [PATCH] remove csum_partial_copy_generic_i386 to clean up exception table To: Richard Weinberger Cc: user-mode-linux-devel@lists.sourceforge.net, user-mode-linux-user@lists.sourceforge.net, linux-kernel@vger.kernel.org, jdike@addtoit.com List-ID: On Mon, Jun 09, 2014 at 01:45:56PM +0800, Real Name wrote: > On Thu, Jun 05, 2014 at 11:49:49PM +0200, Richard Weinberger wrote: > > Am 05.06.2014 06:15, schrieb Honggang Li: > > > arch/x86/um/checksum_32.S had been copy & paste from x86. When build > > > x86 uml, csum_partial_copy_generic_i386 mess up the exception table. > > > In fact, exception table dose not work in uml kernel. > > > > Are you sure that exception tables do not work on UML? > > I said, I'm not sure. Can you please find out? > > I think we can't test the exception table with linux-next uml kernel, because > the exception table is broken. > This patch is the root source of the broken exception table of UML kernel. linux]# git bisect visualize commit 706276543b699d80f546e45f8b12574e7b18d952 Author: H. Peter Anvin Date: Fri Apr 20 17:12:48 2012 -0700 x86, extable: Switch to relative exception table entries