From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754039Ab2LZIn3 (ORCPT ); Wed, 26 Dec 2012 03:43:29 -0500 Received: from merlin.infradead.org ([205.233.59.134]:35353 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753940Ab2LZIn1 (ORCPT ); Wed, 26 Dec 2012 03:43:27 -0500 Message-ID: <1356511396.7010.13.camel@shinybook.infradead.org> Subject: Re: [tip:x86/build] x86: Default to ARCH= x86 to avoid overriding CONFIG_64BIT From: David Woodhouse To: David Rientjes Cc: Ingo Molnar , "H. Peter Anvin" , tglx@linutronix.de, "H. Peter Anvin" , linux-kernel@vger.kernel.org, linux-tip-commits@vger.kernel.org Date: Wed, 26 Dec 2012 08:43:16 +0000 In-Reply-To: References: <1356040315.3198.51.camel@shinybook.infradead.org> Content-Type: multipart/signed; micalg="sha1"; protocol="application/x-pkcs7-signature"; boundary="=-r3KwfBein0gQLf0Tv1xe" X-Mailer: Evolution 3.6.2 (3.6.2-3.fc18) Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-r3KwfBein0gQLf0Tv1xe Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2012-12-25 at 22:32 -0800, David Rientjes wrote: > This creates quite a few build failures on auto-latest: > > arch/x86/built-in.o: In function `hpet_setup_msi_irq': > hpet.c:(.text+0x34638): undefined reference to `arch_setup_hpet_msi' > hpet.c:(.text+0x34651): undefined reference to `destroy_irq' > arch/x86/built-in.o: In function `hpet_msi_capability_lookup': > hpet.c:(.text+0x347ff): undefined reference to `create_irq_nr' > arch/x86/built-in.o:(.data+0xd1c): undefined reference to `native_setup_m= si_irqs' > arch/x86/built-in.o:(.data+0xd20): undefined reference to `native_teardow= n_msi_irq' > drivers/built-in.o: In function `dmar_set_interrupt': > (.text+0x89eec0): undefined reference to `create_irq' > drivers/built-in.o: In function `dmar_set_interrupt': > (.text+0x89ef0b): undefined reference to `arch_setup_dmar_msi' > drivers/built-in.o: In function `dmar_set_interrupt': > (.text+0x89ef44): undefined reference to `destroy_irq' > drivers/built-in.o: In function `free_dmar_iommu': > (.text+0x8a6ae8): undefined reference to `destroy_irq' >=20 > These functions require CONFIG_X86_IO_APIC, which is only possible with= =20 > X86_64 or X86_32_NON_STANDARD. CONFIG_HPET_TIMER, however, can be enable= d=20 > with X86_32, and CONFIG_DMAR_TABLE can be enabled with any X86 via=20 > CONFIG_INTEL_IOMMU. I don't think it can have created them, surely? They must have existed already when building with ARCH=3Dx86. And probably with ARCH=3Di386 too? I'll take a further look in more detail, but at first glance it doesn't seem correct to describe them as bugs caused by this patch; merely bugs that this patch helped us to *find*. Please could you provide the .config file? > That said, I didn't try to fix this up because I believe the commit itsel= f=20 > is wrong.=20 That seems like completely the wrong approach. > When I do "make randconfig" and uname -m is x86_64, I expect=20 > CONFIG_64BIT to always be set. This commit makes this random for all x86= =20 > so that "make randconfig" may result in a 32-bit build. That should be= =20 > the behavior for "make ARCH=3Di386 randconfig" but not "make randconfig" = on=20 > a 64-bit machine. We've had this bizarre "I don't really want randconfig to be random" conversation before. If don't want randconfig to be random, you can use $KCONFIG_ALLCONFIG to override anything you like. Or, for the specific case of CONFIG_64BIT on x86, you can use ARCH=3Di386 or ARCH=3Dx86_64 to override just that one option. I'll look at the dependency problems that already existed, and try to sort them out despite the fact that they seem unrelated to the patch I posted. Thanks for reporting them. --=20 dwmw2 --=-r3KwfBein0gQLf0Tv1xe 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 +y7P3/1/X7U8ocb8VpH/Clt+4iq7nirMcNh6qJR+xjOhV+VHzQMALuGYn5KZmc1NbJQYclsGkDxD 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