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[209.132.180.67]) by mx.google.com with ESMTP id a16si2644574plm.365.2018.11.29.08.44.34; Thu, 29 Nov 2018 08:45:00 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729784AbeK3DtN (ORCPT + 99 others); Thu, 29 Nov 2018 22:49:13 -0500 Received: from ale.deltatee.com ([207.54.116.67]:56506 "EHLO ale.deltatee.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729388AbeK3DtN (ORCPT ); Thu, 29 Nov 2018 22:49:13 -0500 Received: from guinness.priv.deltatee.com ([172.16.1.162]) by ale.deltatee.com with esmtp (Exim 4.89) (envelope-from ) id 1gSPPF-00045c-HO; Thu, 29 Nov 2018 09:43:15 -0700 To: Nadav Amit Cc: Ingo Molnar , Ingo Molnar , Masahiro Yamada , Michal Marek , Thomas Gleixner , Borislav Petkov , "H. Peter Anvin" , X86 ML , Linux Kbuild mailing list , LKML References: <20181112150215.508-1-namit@vmware.com> <20181112150215.508-2-namit@vmware.com> <20181113113000.GB4788@gmail.com> <40E4E1B4-EF5F-43A1-B42C-C4CF6349FC62@vmware.com> <48577A3F-0F76-4CCA-A959-965344D7259F@vmware.com> <7ff5de62-d1df-9a67-1c86-497ce00a4de4@deltatee.com> <7072A2D8-30F8-45CB-AB0C-B1BE4A30259A@vmware.com> <521458D7-A27C-4112-81ED-1974EFE96A76@vmware.com> <5682CCB4-B7D3-4DDC-81BB-2D4DCE968A3D@vmware.com> <336cf7d8-6495-b112-8d3a-c146222fda78@deltatee.com> <1CAF7187-4732-4BC9-8F7F-93EB16ED14E9@vmware.com> From: Logan Gunthorpe Message-ID: <7602f831-72db-888b-4b99-14763a2a3ac5@deltatee.com> Date: Thu, 29 Nov 2018 09:43:10 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.3.0 MIME-Version: 1.0 In-Reply-To: <1CAF7187-4732-4BC9-8F7F-93EB16ED14E9@vmware.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-CA Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 172.16.1.162 X-SA-Exim-Rcpt-To: linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, x86@kernel.org, hpa@zytor.com, bp@alien8.de, tglx@linutronix.de, michal.lkml@markovi.net, yamada.masahiro@socionext.com, mingo@redhat.com, mingo@kernel.org, namit@vmware.com X-SA-Exim-Mail-From: logang@deltatee.com X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on ale.deltatee.com X-Spam-Level: X-Spam-Status: No, score=-8.9 required=5.0 tests=ALL_TRUSTED,BAYES_00, GREYLIST_ISWHITE autolearn=ham autolearn_force=no version=3.4.2 Subject: Re: [PATCH 1/2] Makefile: Fix distcc compilation with x86 macros X-SA-Exim-Version: 4.2.1 (built Tue, 02 Aug 2016 21:08:31 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2018-11-28 6:31 p.m., Nadav Amit wrote: >> On Nov 28, 2018, at 4:49 PM, Logan Gunthorpe wrote: >> >> >> >> On 2018-11-28 5:38 p.m., Nadav Amit wrote: >>> So what’s your take? Would you think this patch is still needed? Should it >>> only be enabled automatically for distcc and not for distcc-pump? >> >> Not sure. The patch will probably slow things down a lot (seeing >> assembly is always done locally and there are twice as many compile >> steps) and will create some confusion once it's possible to disable it >> for the new versions. Maybe hold off and see if anyone else complains? >> >> I don't really know how you'd detect whether pump is in use or not and >> I'm uncertain as to whether any of the auto detection can actually be >> made to be reliable. > > A silly `$(CC) —version | grep pump ` test. Actually I'm not sure that's going to work in all cases. If CC="distcc gcc", then "$(CC) --version" just looks like "gcc --version"... Logan