From patchwork Thu Aug 11 09:17:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jia He X-Patchwork-Id: 12941276 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 F288CC19F2A for ; Thu, 11 Aug 2022 09:17:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234946AbiHKJRa (ORCPT ); Thu, 11 Aug 2022 05:17:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59206 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234843AbiHKJR3 (ORCPT ); Thu, 11 Aug 2022 05:17:29 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 5E83A3DBCD; Thu, 11 Aug 2022 02:17:27 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id A7779113E; Thu, 11 Aug 2022 02:17:27 -0700 (PDT) Received: from entos-ampere-02.shanghai.arm.com (unknown [10.169.212.215]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 6F3D73F70D; Thu, 11 Aug 2022 02:17:21 -0700 (PDT) From: Jia He To: Ard Biesheuvel , Len Brown , James Morse , Tony Luck , Borislav Petkov , Mauro Carvalho Chehab , Robert Richter , Robert Moore Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org, devel@acpica.org, "Rafael J . Wysocki" , Shuai Xue , Jarkko Sakkinen , linux-efi@vger.kernel.org, nd@arm.com, toshi.kani@hpe.com, Jia He Subject: [PATCH 0/2] Modularize ghes_edac driver Date: Thu, 11 Aug 2022 09:17:11 +0000 Message-Id: <20220811091713.10427-1-justin.he@arm.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org Commit dc4e8c07e9e2 ("ACPI: APEI: explicit init of HEST and GHES in apci_init()") introduced a bug that ghes_edac_register() would be invoked before edac_init(). Because at that time, the bus "edac" hasn't been even registered, this created sysfs /devices/mc0 instead of /sys/devices/system/edac/mc/mc0 on an Ampere eMag server. The solution is modularizing the ghes_edac driver. I tested the cases as follows: 1. build test with ghes_edac built-in and module on Aarch64 2. build test with ghes_edac built-in and module on x86_64 3. boot test with ghes_edac built-in and module on Aarch64 4. modprobe and -r for multiple times on Aarch64. Jia He (2): efi/cper: export several helpers for ghes edac to use EDAC/ghes: Modularize ghes_edac driver to remove the dependency on ghes drivers/acpi/apei/ghes.c | 49 ++++++++++++++++++++++-- drivers/edac/Kconfig | 4 +- drivers/edac/ghes_edac.c | 74 ++++++++++++++++++++++++++----------- drivers/firmware/efi/cper.c | 3 ++ include/acpi/ghes.h | 33 ++++------------- 5 files changed, 110 insertions(+), 53 deletions(-)