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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6D1E9E732DB for ; Thu, 28 Sep 2023 14:44:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230251AbjI1OoB (ORCPT ); Thu, 28 Sep 2023 10:44:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41390 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230207AbjI1On7 (ORCPT ); Thu, 28 Sep 2023 10:43:59 -0400 Received: from mail.alien8.de (mail.alien8.de [IPv6:2a01:4f9:3051:3f93::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7AFB219E for ; Thu, 28 Sep 2023 07:43:58 -0700 (PDT) Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTP id DDC0240E0176; Thu, 28 Sep 2023 14:43:55 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at mail.alien8.de Authentication-Results: mail.alien8.de (amavisd-new); dkim=pass (4096-bit key) header.d=alien8.de Received: from mail.alien8.de ([127.0.0.1]) by localhost (mail.alien8.de [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id OWLQHTNbZWTX; Thu, 28 Sep 2023 14:43:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=alien8; t=1695912233; bh=h1/LDhE8fzT9yHzOAMn/O1uQcjI/GQRZwIc2SRP75FA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=iZ5FRVunRWlEOnzVstKpLgxo9Pq1pLk58HzP++2IaqcTwzO8HrerFTvz+m0xvvPbA /1OYLbkPTP8O7vAFVM23V3gaF/swxmTcjRGRnDzcX6HKQ60eDJ9lFFmZx8SRyOwt4a gyyNnqRe+YgkZsoj+PJlVyCRJfSQBhxg8htG0sPi4XPKyx6hQkP8dikTsmct2e3Ifl UJ5PpeYWN6IbaMlFA2mv5N6SgFZhyMzBJOB702tLvbSQLn0+99W7IZfuPRozvWtxmP coGgcLA/k7hwojbNnq9oxY6uYA5481XGe2E0cDYK3VIVADW0p6WyVfAX8HuIcB+I2U OUTKPKDwtS5d8g/bLwq4yVYAm7OcT+lIFK1fKgmdggeKQqkNdKeDSu+7hSork76W1n B0xOU/+he+a/RqX6UyQyMS+kkfkQx7hIGxIeBZ9YgP8M1qEZJBd6Kl00RhuQRUBFV5 wx2Ec8ZQlHwYd/MA6hQ5QH8u/cCNug+w7aFQVWzPunz/Ay7xqRMpbM+b4qRSHZmN+k RQig38hcXZ1IoLJa5xR1LXPxDFLcz61ZMbVx2/vem56E/luM49qcnwJQ5n6AMVJm2L xOIu9TAw8C3ZOTYf4EpvJUp2GAXG7WSB1O0j8IKufzGudrIurXHvYjx4Iijzna35tD I9qe4vVT+23x0C4PkzqztaUA= Received: from nazgul.tnic (unknown [88.128.88.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 4AD0D40E00B3; Thu, 28 Sep 2023 14:43:32 +0000 (UTC) Date: Thu, 28 Sep 2023 16:43:45 +0200 From: Borislav Petkov To: Shuai Xue Cc: keescook@chromium.org, tony.luck@intel.com, gpiccoli@igalia.com, rafael@kernel.org, lenb@kernel.org, james.morse@arm.com, tglx@linutronix.de, mingo@redhat.com, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, ardb@kernel.org, robert.moore@intel.com, linux-hardening@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org, linux-efi@vger.kernel.org, acpica-devel@lists.linuxfoundation.org, baolin.wang@linux.alibaba.com Subject: Re: [RFC PATCH v2 0/9] Use ERST for persistent storage of MCE and APEI errors Message-ID: <20230928144345.GAZRWRIXH1Tfgn5EpO@fat_crate.local> References: <20230925074426.97856-1-xueshuai@linux.alibaba.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20230925074426.97856-1-xueshuai@linux.alibaba.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Sep 25, 2023 at 03:44:17PM +0800, Shuai Xue wrote: > After /dev/mcelog character device deprecated by commit 5de97c9f6d85 > ("x86/mce: Factor out and deprecate the /dev/mcelog driver"), the > serialized MCE error record, of previous boot in persistent storage is not > collected via APEI ERST. You lost me here. /dev/mcelog is deprecated but you can still use it and apei_write_mce() still happens. Looking at your patches, you're adding this to ghes so how about you sit down first and explain your exact use case and what exactly you wanna do? Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette