Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964944AbVKGTCl (ORCPT ); Mon, 7 Nov 2005 14:02:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964950AbVKGTCl (ORCPT ); Mon, 7 Nov 2005 14:02:41 -0500 Received: from smtp3.nextra.sk ([195.168.1.142]:48652 "EHLO mailhub3.nextra.sk") by vger.kernel.org with ESMTP id S964944AbVKGTCk (ORCPT ); Mon, 7 Nov 2005 14:02:40 -0500 Message-ID: <436FA4CB.6020406@rainbow-software.org> Date: Mon, 07 Nov 2005 20:02:35 +0100 From: Ondrej Zary User-Agent: Mozilla Thunderbird 1.0.7 (X11/20050923) X-Accept-Language: en-us, en MIME-Version: 1.0 To: "linux-os (Dick Johnson)" CC: Zachary Amsden , "Maciej W. Rozycki" , Andi Kleen , linux-kernel@vger.kernel.org Subject: Re: 2.6.14: CR4 not needed to be inspected on the 486 anymore? References: <436A3C10.9050302@vmware.com> <436AA1FD.3010401@vmware.com> <436F7673.5040309@vmware.com> <436F8601.4070201@vmware.com> <436F8FAE.90805@vmware.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 752 Lines: 21 linux-os (Dick Johnson) wrote: >>No, you won't. #UD and #GP will not (I hesitate to say never, but other >>than a processor bug, I believe that is correct) reset the processor. >>And CR4 is not "undocumented", even on 486. >> > > > Yes it is. The i486 Programmer's reference manual documents only > to CR3. The manual might be older than the newer 486 CPUs. And don't forget that not every 486 is Intel. There are at least Cyrix, AMD and UMC with interesting Am5x86-P75 and Cx5x86 too. -- Ondrej Zary - 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/