From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4E54AC433B4 for ; Tue, 20 Apr 2021 15:42:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 148F461354 for ; Tue, 20 Apr 2021 15:42:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232915AbhDTPn1 (ORCPT ); Tue, 20 Apr 2021 11:43:27 -0400 Received: from mga02.intel.com ([134.134.136.20]:57988 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232303AbhDTPn0 (ORCPT ); Tue, 20 Apr 2021 11:43:26 -0400 IronPort-SDR: Kn2+hmN/QxvdemEnS9tzdf4AVHsDXJa/bth/UddiioPz3mq6oKSTQYb/l/+G3TZX6NZdyqVPGk thtoCPFivqUA== X-IronPort-AV: E=McAfee;i="6200,9189,9960"; a="182660869" X-IronPort-AV: E=Sophos;i="5.82,237,1613462400"; d="scan'208";a="182660869" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Apr 2021 08:42:54 -0700 IronPort-SDR: unoWFt/RJnmiNcieQXJzY2Un2GpMb8M25Wd5f9DCUQMOSqY73zRfHS7OsDFcKoXfh2MUxDnl0O psuXPIu7ydRg== X-IronPort-AV: E=Sophos;i="5.82,237,1613462400"; d="scan'208";a="523853448" Received: from agluck-desk2.sc.intel.com (HELO agluck-desk2.amr.corp.intel.com) ([10.3.52.146]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Apr 2021 08:42:54 -0700 Date: Tue, 20 Apr 2021 08:42:53 -0700 From: "Luck, Tony" To: Jue Wang Cc: nao.horiguchi@gmail.com, akpm@linux-foundation.org, bp@alien8.de, david@redhat.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, luto@kernel.org, naoya.horiguchi@nec.com, osalvador@suse.de, yaoaili@kingsoft.com Subject: Re: [PATCH v1 3/3] mm,hwpoison: add kill_accessing_process() to find error virtual address Message-ID: <20210420154253.GA577572@agluck-desk2.amr.corp.intel.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Apr 19, 2021 at 06:49:15PM -0700, Jue Wang wrote: > On Tue, 13 Apr 2021 07:43:20 +0900, Naoya Horiguchi wrote: > ... > > + * This function is intended to handle "Action Required" MCEs on already > > + * hardware poisoned pages. They could happen, for example, when > > + * memory_failure() failed to unmap the error page at the first call, or > > + * when multiple Action Optional MCE events races on different CPUs with > > + * Local MCE enabled. > > +Tony Luck > > Hey Tony, I thought SRAO MCEs are broadcasted to all cores in the system > as they come without an execution context, is it correct? > > If Yes, Naoya, I think we might want to remove the comments about the > "multiple Action Optional MCE racing" part. Jue, Correct. SRAO machine checks are broadcast. But rather than remove the second part, just replace with "multiple local machine checks on different CPUs". -Tony