Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750966Ab3IZN0M (ORCPT ); Thu, 26 Sep 2013 09:26:12 -0400 Received: from mail-pa0-f43.google.com ([209.85.220.43]:63186 "EHLO mail-pa0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750798Ab3IZN0G (ORCPT ); Thu, 26 Sep 2013 09:26:06 -0400 MIME-Version: 1.0 In-Reply-To: References: <1377073172-3662-1-git-send-email-richard@nod.at> <1377073172-3662-3-git-send-email-richard@nod.at> <52441025.9030308@nod.at> <52441407.9010603@nod.at> <52442108.1020304@nod.at> Date: Thu, 26 Sep 2013 15:26:06 +0200 X-Google-Sender-Auth: c9mgEBMiyOZqwSMTEGFW8E0oEMk Message-ID: Subject: Re: [PATCH 2/8] um: Do not use SUBARCH From: Geert Uytterhoeven To: Ramkumar Ramachandra Cc: Richard Weinberger , Linux-Arch , Michal Marek , Ralf Baechle , Paul Mundt , Jeff Dike , Guan Xuetao , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , "the arch/x86 maintainers" , linux-kbuild , LKML , linux-m68k , Linux MIPS Mailing List , Linux-sh list , uml-devel Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1680 Lines: 42 On Thu, Sep 26, 2013 at 3:13 PM, Ramkumar Ramachandra wrote: > Ramkumar Ramachandra wrote: >> Richard Weinberger wrote: >>> I told you already that "make defconfig ARCH=um SUBARCH=x86" will spuriously >>> create a x86_64 config on x86_64. >>> This breaks existing setups. >> >> I'll fix this and resubmit soon. > > Wait a minute. You're now arguing about whether the generic "x86" > means i386 or x86_64. Its meaning is already defined in > arch/x86/Kconfig and arch/x86/um/Kconfig: see the config 64BIT. Unless > i386 is explicitly specified, the default is to build a 64-bit kernel. > That is already defined for a normal Linux kernel, and user-mode Linux > should not break that convention. So, in the example you pulled out of > your hat: > > $ make defconfig ARCH=um SUBARCH=x86 > > the user should expect a 64-bit build, and not an i386 build as you > say. Both my patches are correct, and the "regression" that you > pointed out is a red herring. Sorry for chiming in, but... what about cross compiling? SUBARCH=x86 should give you a 32-bit ia32 kernel, right? Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- 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/