From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Weinberger Subject: Re: [PATCH 1/8] um: Create defconfigs for i386 and x86_64 Date: Fri, 27 Sep 2013 11:26:16 +0200 Message-ID: <52454F38.60902@nod.at> References: <1377073172-3662-1-git-send-email-richard@nod.at> <1377073172-3662-2-git-send-email-richard@nod.at> <52440DE0.1030807@nod.at> <52454E58.3010305@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <52454E58.3010305@gmx.de> Sender: linux-sh-owner@vger.kernel.org To: =?UTF-8?B?VG9yYWxmIEbDtnJzdGVy?= Cc: Ramkumar Ramachandra , linux-arch@vger.kernel.org, Michal Marek , geert@linux-m68k.org, ralf@linux-mips.org, lethal@linux-sh.org, Jeff Dike , gxt@mprc.pku.edu.cn, Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, linux-kbuild@vger.kernel.org, LKML , linux-m68k@lists.linux-m68k.org, linux-mips@linux-mips.org, linux-sh@vger.kernel.org, user-mode-linux-devel@lists.sourceforge.net List-Id: linux-arch.vger.kernel.org Am 27.09.2013 11:22, schrieb Toralf F=C3=B6rster: > On 09/26/2013 12:35 PM, Richard Weinberger wrote: >> Am 26.09.2013 12:20, schrieb Ramkumar Ramachandra: >>> Richard Weinberger wrote: >>>> This patch is based on: https://lkml.org/lkml/2013/7/4/396 >>>> >>>> Cc: Ramkumar Ramachandra >>>> Signed-off-by: Richard Weinberger >>>> --- >>>> arch/um/configs/i386_defconfig | 954 ++++++++++++++++++++++++++= +++++++++++++ >>>> arch/um/configs/x86_64_defconfig | 943 ++++++++++++++++++++++++++= ++++++++++++ >>>> 2 files changed, 1897 insertions(+) >>>> create mode 100644 arch/um/configs/i386_defconfig >>>> create mode 100644 arch/um/configs/x86_64_defconfig >>> >>> First, I'm pissed that the upstream tree doesn't build and run out = of >>> the box months after I submitted a fix in July (and it's September >>> now). Fact that you dropped my sane patches aside and decided to wr= ite >>> a much larger series aside, user-mode Linux in upstream is broken. >>> This means that any user who does: >>> >>> $ ARCH=3Dum make defconfig >>> $ ARCH=3Dum make >>> >>> will end up with a *broken* Linux _today_. Unless the user is livin= g >>> in the Stone Age with a 32-bit computer, this is what she will see >>> when she attempts to boot up Linux: >=20 > :-{ >=20 > Grmpf >=20 > There are a lot of 32 bit user land linux installation (beside my own= , > look at the x86 Gentoo world) in the wild - even running on modern 64= bit > CPUs. The simple reason is that those installations run fine and the > performance "boost" of 64bit often isn't worth a new reinstallation. You *can* of course run 32bit userland on UML. Just create a 32bit UML = on x86_64. make defconfig ARCH=3Dum SUBARCH=3Di386 make linux ARCH=3Dum SUBARCH=3Di386 This will work on x86_64 and x86 hosts. Thanks, //richard From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from b.ns.miles-group.at ([95.130.255.144]:1660 "EHLO radon.swed.at" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752904Ab3I0J01 (ORCPT ); Fri, 27 Sep 2013 05:26:27 -0400 Message-ID: <52454F38.60902@nod.at> Date: Fri, 27 Sep 2013 11:26:16 +0200 From: Richard Weinberger MIME-Version: 1.0 Subject: Re: [PATCH 1/8] um: Create defconfigs for i386 and x86_64 References: <1377073172-3662-1-git-send-email-richard@nod.at> <1377073172-3662-2-git-send-email-richard@nod.at> <52440DE0.1030807@nod.at> <52454E58.3010305@gmx.de> In-Reply-To: <52454E58.3010305@gmx.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-arch-owner@vger.kernel.org List-ID: To: =?UTF-8?B?VG9yYWxmIEbDtnJzdGVy?= Cc: Ramkumar Ramachandra , linux-arch@vger.kernel.org, Michal Marek , geert@linux-m68k.org, ralf@linux-mips.org, lethal@linux-sh.org, Jeff Dike , gxt@mprc.pku.edu.cn, Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, linux-kbuild@vger.kernel.org, LKML , linux-m68k@lists.linux-m68k.org, linux-mips@linux-mips.org, linux-sh@vger.kernel.org, user-mode-linux-devel@lists.sourceforge.net Message-ID: <20130927092616.3U8Q4QjAYy-1xCViJrKzpZXs868yOUdZI5IvNVp6NIQ@z> Am 27.09.2013 11:22, schrieb Toralf Förster: > On 09/26/2013 12:35 PM, Richard Weinberger wrote: >> Am 26.09.2013 12:20, schrieb Ramkumar Ramachandra: >>> Richard Weinberger wrote: >>>> This patch is based on: https://lkml.org/lkml/2013/7/4/396 >>>> >>>> Cc: Ramkumar Ramachandra >>>> Signed-off-by: Richard Weinberger >>>> --- >>>> arch/um/configs/i386_defconfig | 954 +++++++++++++++++++++++++++++++++++++++ >>>> arch/um/configs/x86_64_defconfig | 943 ++++++++++++++++++++++++++++++++++++++ >>>> 2 files changed, 1897 insertions(+) >>>> create mode 100644 arch/um/configs/i386_defconfig >>>> create mode 100644 arch/um/configs/x86_64_defconfig >>> >>> First, I'm pissed that the upstream tree doesn't build and run out of >>> the box months after I submitted a fix in July (and it's September >>> now). Fact that you dropped my sane patches aside and decided to write >>> a much larger series aside, user-mode Linux in upstream is broken. >>> This means that any user who does: >>> >>> $ ARCH=um make defconfig >>> $ ARCH=um make >>> >>> will end up with a *broken* Linux _today_. Unless the user is living >>> in the Stone Age with a 32-bit computer, this is what she will see >>> when she attempts to boot up Linux: > > :-{ > > Grmpf > > There are a lot of 32 bit user land linux installation (beside my own, > look at the x86 Gentoo world) in the wild - even running on modern 64bit > CPUs. The simple reason is that those installations run fine and the > performance "boost" of 64bit often isn't worth a new reinstallation. You *can* of course run 32bit userland on UML. Just create a 32bit UML on x86_64. make defconfig ARCH=um SUBARCH=i386 make linux ARCH=um SUBARCH=i386 This will work on x86_64 and x86 hosts. Thanks, //richard