Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755275Ab3DLQii (ORCPT ); Fri, 12 Apr 2013 12:38:38 -0400 Received: from 173-166-109-252-newengland.hfc.comcastbusiness.net ([173.166.109.252]:39105 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754027Ab3DLQig (ORCPT ); Fri, 12 Apr 2013 12:38:36 -0400 Message-ID: <1365784708.18784.158.camel@i7.infradead.org> Subject: Re: [PATCH] x86: Default to ARCH=x86 to avoid overriding CONFIG_64BIT From: David Woodhouse To: richard -rw- weinberger Cc: x86@kernel.org, LKML Date: Fri, 12 Apr 2013 17:38:28 +0100 In-Reply-To: References: <1356040315.3198.51.camel@shinybook.infradead.org> Content-Type: multipart/signed; micalg="sha1"; protocol="application/x-pkcs7-signature"; boundary="=-9isP8DkvNsAwCZt2NVhs" X-Mailer: Evolution 3.6.4 (3.6.4-3.fc18) Mime-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 10353 Lines: 166 --=-9isP8DkvNsAwCZt2NVhs Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, 2013-04-12 at 18:01 +0200, richard -rw- weinberger wrote: > David, >=20 > On Thu, Dec 20, 2012 at 10:51 PM, David Woodhouse w= rote: > > -SUBARCH :=3D $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64= / \ > > +SUBARCH :=3D $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ > > + -e s/sun4u/sparc64/ \ > > -e s/arm.*/arm/ -e s/sa110/arm/ \ > > -e s/s390x/s390/ -e s/parisc64/parisc= / \ > > -e s/ppc.*/powerpc/ -e s/mips.*/mips/= \ >=20 > Why is this change needed? Especially the -e s/x86_64/x86. > It causes UML to get build for x86 which is a nasty change > of the default behavior. Which one? The "new" change of {i.86,x86_64} -> x86, or the pre-existing ones for s390, parisc, powerpc and mips that it's falling into line with? > Before your change you got a UML kernel for the underlying arch just > by running "make linux ARCH=3Dum". > Now it will always build a x86 UML kernel, also if you run it on > x86_64 and one is forced to override > SUBARCH by hand. I know this was true a number of years ago when I first submitted this fix. But I thought the ARCH=3Dx86 UML build had been fixed since then. And I was fairly sure I'd *tested* that belief when recently resubmitting... Isn't it merely a case of setting CONFIG_64BIT to the desired value? --=20 dwmw2 --=-9isP8DkvNsAwCZt2NVhs Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIUbjCCBjQw ggQcoAMCAQICAR4wDQYJKoZIhvcNAQEFBQAwfTELMAkGA1UEBhMCSUwxFjAUBgNVBAoTDVN0YXJ0 Q29tIEx0ZC4xKzApBgNVBAsTIlNlY3VyZSBEaWdpdGFsIENlcnRpZmljYXRlIFNpZ25pbmcxKTAn BgNVBAMTIFN0YXJ0Q29tIENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTA3MTAyNDIxMDE1NVoX DTE3MTAyNDIxMDE1NVowgYwxCzAJBgNVBAYTAklMMRYwFAYDVQQKEw1TdGFydENvbSBMdGQuMSsw KQYDVQQLEyJTZWN1cmUgRGlnaXRhbCBDZXJ0aWZpY2F0ZSBTaWduaW5nMTgwNgYDVQQDEy9TdGFy dENvbSBDbGFzcyAxIFByaW1hcnkgSW50ZXJtZWRpYXRlIENsaWVudCBDQTCCASIwDQYJKoZIhvcN AQEBBQADggEPADCCAQoCggEBAMcJg8zOLdgasSmkLhOrlr6KMoOMpohBllVHrdRvEg/q6r8jR+EK 75xCGhR8ToREoqe7zM9/UnC6TS2y9UKTpT1v7RSMzR0t6ndl0TWBuUr/UXBhPk+Kmy7bI4yW4urC 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