From patchwork Tue Sep 5 11:06:06 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xie XiuQi X-Patchwork-Id: 9938445 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id C02C9600CB for ; Tue, 5 Sep 2017 11:06:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B349A28925 for ; Tue, 5 Sep 2017 11:06:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A7E9828939; Tue, 5 Sep 2017 11:06:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2CB8128925 for ; Tue, 5 Sep 2017 11:06:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751621AbdIELGc (ORCPT ); Tue, 5 Sep 2017 07:06:32 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:5968 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751106AbdIELGA (ORCPT ); Tue, 5 Sep 2017 07:06:00 -0400 Received: from 172.30.72.60 (EHLO DGGEMS411-HUB.china.huawei.com) ([172.30.72.60]) by dggrg04-dlp.huawei.com (MOS 4.4.6-GA FastPath queued) with ESMTP id DGO22120; Tue, 05 Sep 2017 19:05:21 +0800 (CST) Received: from localhost.localdomain.localdomain (10.175.113.25) by DGGEMS411-HUB.china.huawei.com (10.3.19.211) with Microsoft SMTP Server id 14.3.301.0; Tue, 5 Sep 2017 19:05:11 +0800 From: Xie XiuQi To: , , , , , , , , , , , , CC: , , , , , , , , , , Subject: [PATCH v2 3/3] arm64/ras: save error address from memory section for recovery Date: Tue, 5 Sep 2017 19:06:06 +0800 Message-ID: <1504609566-66318-4-git-send-email-xiexiuqi@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1504609566-66318-1-git-send-email-xiexiuqi@huawei.com> References: <1504609566-66318-1-git-send-email-xiexiuqi@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020205.59AE84F1.018A, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: d10d5a59900155dd676ed2049208751a Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP In some platform, when SEA triggerred, physical address might be reported by memory section, so we save it for error recovery later. Signed-off-by: Xie XiuQi Tested-by: Wang Xiongfeng --- arch/arm64/kernel/ras.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/arch/arm64/kernel/ras.c b/arch/arm64/kernel/ras.c index 5710b2e..8a44c01 100644 --- a/arch/arm64/kernel/ras.c +++ b/arch/arm64/kernel/ras.c @@ -141,3 +141,34 @@ void arm_process_error(struct ghes *ghes, struct cper_sec_proc_arm *err) set_thread_flag(TIF_SEA_NOTIFY); } +int ghes_mem_err_callback(struct notifier_block *nb, unsigned long val, void *data) +{ + bool info_saved = false; + struct ghes_mem_err *ghes_mem = (struct ghes_mem_err *)data; + struct cper_sec_mem_err *mem_err = ghes_mem->mem_err; + + if ((ghes_mem->notify_type != ACPI_HEST_NOTIFY_SEA) || + (ghes_mem->severity != CPER_SEV_RECOVERABLE)) + return 0; + + if (mem_err->validation_bits & CPER_MEM_VALID_PA) { + info_saved = sea_save_info(mem_err->physical_addr); + } + + if (info_saved) + set_thread_flag(TIF_SEA_NOTIFY); + + return 0; +} + +static struct notifier_block ghes_mem_err_nb = { + .notifier_call = ghes_mem_err_callback, +}; + +static int arm64_err_recov_init(void) +{ + atomic_notifier_chain_register(&ghes_mem_err_chain, &ghes_mem_err_nb); + return 0; +} + +late_initcall(arm64_err_recov_init);