From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754017AbaCGWjk (ORCPT ); Fri, 7 Mar 2014 17:39:40 -0500 Received: from mail.skyhub.de ([78.46.96.112]:34200 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752582AbaCGWjj (ORCPT ); Fri, 7 Mar 2014 17:39:39 -0500 Date: Fri, 7 Mar 2014 23:39:29 +0100 From: Borislav Petkov To: Dave Jones Cc: "H. Peter Anvin" , Fengguang Wu , Ingo Molnar , Yinghai Lu , LKML , Paolo Bonzini Subject: Re: [qemu64,+smep,+smap] WARNING: CPU: 1 PID: 0 at arch/x86/kernel/cpu/amd.c:220 init_amd() Message-ID: <20140307223929.GI5255@pd.tnic> References: <20140307015833.GA10048@localhost> <53195336.9080606@linux.intel.com> <20140307055035.GA5230@localhost> <531A164B.8040402@linux.intel.com> <20140307191050.GA10961@redhat.com> <531A33A2.5030706@linux.intel.com> <20140307213856.GF5255@pd.tnic> <20140307220655.GA580@redhat.com> <20140307222018.GG5255@pd.tnic> <20140307222743.GC580@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20140307222743.GC580@redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Mar 07, 2014 at 05:27:43PM -0500, Dave Jones wrote: > When I wrote it 10 years or so back it made more sense than it > probably does now, so I'd be ok with just dropping it all too tbh. > Machines of that vintage probably have bigger problems now anyway. Yeah. > I don't recall seeing a report of the taint flag being set ever in > a Red Hat bug report, but we've seen countless problems from machines > of that era with dying ram or motherboard capacitors or.. Right, this should be a sufficient indicator that those machines won't be running modern kernels anymore :-) Oh, and besides, this really frees up that taint bit TAINT_UNSAFE_SMP for the forcepae thing. Let me cook up a patch - it looks like 3.14 will be the release where we're getting rid of old platforms - look at tip/x86/nuke-platforms. :-) > I still have NexGen docs somewhere ;) Uuuh, more than ancient, make sure to hold on to those :-) -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. --