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=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS autolearn=ham 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 A8A5FC10F14 for ; Thu, 18 Apr 2019 22:58:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 76DE720674 for ; Thu, 18 Apr 2019 22:58:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="HFEFY2qW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726317AbfDRW6q (ORCPT ); Thu, 18 Apr 2019 18:58:46 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:38330 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725890AbfDRW6p (ORCPT ); Thu, 18 Apr 2019 18:58:45 -0400 Received: by mail-pf1-f193.google.com with SMTP id 10so1753670pfo.5 for ; Thu, 18 Apr 2019 15:58:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=eHksTS8uj6LgnVRr/W7+Jie87BJjsqBO+MRB/xckssk=; b=HFEFY2qWuThtw7vRwO1Oy4LoNNWDaHLcVzcUUKBI/CrYHkJH42z2PUi2HH+bjv3xt4 qbQtn5O7jiy94A+PVonJUNCuHNp+MKHRZT0WHGvbb2MzuTRsmAVh9xF3vLC7K0Z0Tpfv wIkFtP86yVGoqsFW7wrCuwWcgI/p1ohCONlqB74eA82z7pJHJU8LaNLP9wa2DFd4yeQ4 tecKWwl8kXMzBP7V0mYBbGZzZVJJggahX1LHw0TbtyKusfLSxLStLAqs+0/AW9EShDlW 5jAu3yRKUx8z+R5Etv/+2v165b0YgwrZckJ+LovJnXeyHrWmi/zkNei4lp2rGpLWF7D3 lIrw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=eHksTS8uj6LgnVRr/W7+Jie87BJjsqBO+MRB/xckssk=; b=XJ1w7kZ5cKPGXQCfLskRqFUhA0m624+j//7OKp3M7PGejnvoYOQrcI4U6ZNGjPWBH8 PnYPISx7bm+l1xxJgDbjey1kplcT/c8nxi0HGO55nKmLGoZNKcDFl8Kg1Mb+gBuYh2GP U44HkN0EydEdSSlQo1sB8tcH9YxWqhCt26QfoP1bE/VYIwUzAYINHSxPprIOiAnpJcLt /2//3oHe9c7PooEcu6R53SJao36xfsQEPO8Os8npidYc6ZxTuLu/0Y2il5JzblOzlU8o OY8oGuWpbvBuWLse/h7rg69Pt/z1NxpswSJ68MRV+0B4x1wGcpxpNgAhHYL4VOwcUH1h RNkg== X-Gm-Message-State: APjAAAUJdIdQDQtkdE97tERwAOXItJIhG2WPx4kU6kN/mkG09H9O+nMQ z7+4BMqnbIHtOWbofdoSpkw4t2tfP6Kfl9X6D+4= X-Google-Smtp-Source: APXvYqzJWSzMC1D1b/OJS7TvYjAsQRrntS+B0MYq0eC2OI90oflw+W/RX2Ead5DTv3wCBRp1abgilw7YCs+3Ha93ma4= X-Received: by 2002:aa7:914d:: with SMTP id 13mr211719pfi.149.1555627879623; Thu, 18 Apr 2019 15:51:19 -0700 (PDT) MIME-Version: 1.0 References: <20190418220229.32133-1-tony.luck@intel.com> In-Reply-To: <20190418220229.32133-1-tony.luck@intel.com> From: Cong Wang Date: Thu, 18 Apr 2019 15:51:07 -0700 Message-ID: Subject: Re: [PATCH] RAS/CEC: Add debugfs switch to disable at run time To: Tony Luck Cc: Borislav Petkov , LKML Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Apr 18, 2019 at 3:02 PM Tony Luck wrote: > > Useful when running error injection tests that want to > see all of the MCi_(STATUS|ADDR|MISC) data via /dev/mcelog. > > Signed-off-by: Tony Luck We saw the same problem, CONFIG_RAS hijacks all the correctable memory errors, which leaves mcelog "broken" silently. I know it is arguable, but until we can switch from mcelog to rasdaemon, mcelog should still work as before. I like this idea of disabling it at runtime, so: Acked-by: Cong Wang Thanks.