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[209.132.180.67]) by mx.google.com with ESMTP id 102si743280plb.176.2019.02.13.16.06.43; Wed, 13 Feb 2019 16:06:59 -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; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405962AbfBMSnp convert rfc822-to-8bit (ORCPT + 99 others); Wed, 13 Feb 2019 13:43:45 -0500 Received: from mga01.intel.com ([192.55.52.88]:4318 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2405195AbfBMSnn (ORCPT ); Wed, 13 Feb 2019 13:43:43 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 13 Feb 2019 10:43:42 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,366,1544515200"; d="scan'208";a="274813198" Received: from orsmsx109.amr.corp.intel.com ([10.22.240.7]) by orsmga004.jf.intel.com with ESMTP; 13 Feb 2019 10:43:42 -0800 Received: from orsmsx123.amr.corp.intel.com (10.22.240.116) by ORSMSX109.amr.corp.intel.com (10.22.240.7) with Microsoft SMTP Server (TLS) id 14.3.408.0; Wed, 13 Feb 2019 10:43:42 -0800 Received: from orsmsx110.amr.corp.intel.com ([169.254.10.97]) by ORSMSX123.amr.corp.intel.com ([169.254.1.230]) with mapi id 14.03.0415.000; Wed, 13 Feb 2019 10:43:42 -0800 From: "Luck, Tony" To: Peter Zijlstra , Linus Torvalds CC: Will Deacon , linux-arch , Linux List Kernel Mailing , "Paul E. McKenney" , Benjamin Herrenschmidt , Arnd Bergmann , Andrea Parri , "Daniel Lustig" , David Howells , Alan Stern Subject: RE: [RFC PATCH] docs/memory-barriers.txt: Rewrite "KERNEL I/O BARRIER EFFECTS" section Thread-Topic: [RFC PATCH] docs/memory-barriers.txt: Rewrite "KERNEL I/O BARRIER EFFECTS" section Thread-Index: AQHUw8CQ0KdwUdxVmkGQLqc6bwLy7qXekhCAgAABswD//3t/4A== Date: Wed, 13 Feb 2019 18:43:41 +0000 Message-ID: <3908561D78D1C84285E8C5FCA982C28F7D4FF0DE@ORSMSX110.amr.corp.intel.com> References: <20190211172948.3322-1-will.deacon@arm.com> <20190213172047.GH6346@brain-police> <20190213183314.GB32494@hirez.programming.kicks-ass.net> In-Reply-To: <20190213183314.GB32494@hirez.programming.kicks-ass.net> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-titus-metadata-40: eyJDYXRlZ29yeUxhYmVscyI6IiIsIk1ldGFkYXRhIjp7Im5zIjoiaHR0cDpcL1wvd3d3LnRpdHVzLmNvbVwvbnNcL0ludGVsMyIsImlkIjoiMmJmZTg0YzUtMDZhNy00OGMzLWEzMzctNjEwZTQ4MzY4ZGI5IiwicHJvcHMiOlt7Im4iOiJDVFBDbGFzc2lmaWNhdGlvbiIsInZhbHMiOlt7InZhbHVlIjoiQ1RQX05UIn1dfV19LCJTdWJqZWN0TGFiZWxzIjpbXSwiVE1DVmVyc2lvbiI6IjE3LjEwLjE4MDQuNDkiLCJUcnVzdGVkTGFiZWxIYXNoIjoid3pcL1M3QllyMEhXVVY5OVliQkZLMUpSeVNXek9iNTJPXC9PeXRxeDNJRE5RYjViUDNOOFhPZ2kyd25DWDlmSWlyIn0= x-ctpclassification: CTP_NT dlp-product: dlpe-windows dlp-version: 11.0.400.15 dlp-reaction: no-action x-originating-ip: [10.22.254.140] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > I think the last time this came up, it was said that those people still > running Linux on Itanium were running old distro kernels, not upstream. > > So yeah, we could probably do whatever and nobody would ever notice, > except maybe Al, who is rumoured to still have an ia64 :-) I haven't heard of anyone taking upstream kernels and actually using them for production work in a long time. It's mostly just a few folks keeping ia64 alive "just because" these days. I doubt any of them have an SGI Altix to test on (so realistically Altix was probably broken upstream many releases ago). -Tony