Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932306AbaGIXdV (ORCPT ); Wed, 9 Jul 2014 19:33:21 -0400 Received: from mga09.intel.com ([134.134.136.24]:58752 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932210AbaGIXdU (ORCPT ); Wed, 9 Jul 2014 19:33:20 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,634,1400050800"; d="scan'208";a="570853299" From: "Luck, Tony" To: Havard Skinnemoen , Andi Kleen CC: Borislav Petkov , Linux Kernel , Ewout van Bekkum Subject: RE: [PATCH 4/6] x86-mce: Add spinlocks to prevent duplicated MCP and CMCI reports. Thread-Topic: [PATCH 4/6] x86-mce: Add spinlocks to prevent duplicated MCP and CMCI reports. Thread-Index: AQHPm7VRKQRI444FeUKUaXDupa/8IJuYveoA//+l3oA= Date: Wed, 9 Jul 2014 23:32:53 +0000 Message-ID: <3908561D78D1C84285E8C5FCA982C28F328578D2@ORSMSX114.amr.corp.intel.com> References: <1404925766-32253-1-git-send-email-hskinnemoen@google.com> <1404925766-32253-5-git-send-email-hskinnemoen@google.com> <87a98inucv.fsf@tassilo.jf.intel.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.22.254.140] Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id s69NXPG4003655 > I don't think we got the description right here. I think the real > issue here was machine check polls happening on multiple CPUs with > shared banks, all reporting the same MCEs. This is very reproducible > when booting with mce=no_cmci, since all CPUs will handle all banks, > and there's AFAICT no good way to identify shared banks without > enabling CMCI. Ok - then update the description to enumerate the problem cases. Probably: *) mce=no_cmci *) Intel cpus with MCG_CAP.MCG_CMCI_P=0 *) AMD cpus (they don't do CMCI at all, do they??) -Tony ????{.n?+???????+%?????ݶ??w??{.n?+????{??G?????{ay?ʇڙ?,j??f???h?????????z_??(?階?ݢj"???m??????G????????????&???~???iO???z??v?^?m???? ????????I?