From patchwork Fri Jan 26 12:31:25 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xie XiuQi X-Patchwork-Id: 10185519 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 D0A3360383 for ; Fri, 26 Jan 2018 12:25:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C55D9287C3 for ; Fri, 26 Jan 2018 12:25:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B60C5287DB; Fri, 26 Jan 2018 12:25:53 +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 38DF2287C3 for ; Fri, 26 Jan 2018 12:25:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751793AbeAZMZj (ORCPT ); Fri, 26 Jan 2018 07:25:39 -0500 Received: from szxga05-in.huawei.com ([45.249.212.191]:4737 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751990AbeAZMZZ (ORCPT ); Fri, 26 Jan 2018 07:25:25 -0500 Received: from DGGEMS411-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 7F80C42038B5D; Fri, 26 Jan 2018 20:25:09 +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 14.3.361.1; Fri, 26 Jan 2018 20:25:04 +0800 From: Xie XiuQi To: , , , , , , , , , , , , , CC: , , , , , , , , , , , , Subject: [PATCH v5 3/3] arm64/ras: save error address from memory section for recovery Date: Fri, 26 Jan 2018 20:31:25 +0800 Message-ID: <1516969885-150532-4-git-send-email-xiexiuqi@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1516969885-150532-1-git-send-email-xiexiuqi@huawei.com> References: <1516969885-150532-1-git-send-email-xiexiuqi@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-CFilter-Loop: Reflected 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 Tested-by: Tyler Baicar --- 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 05d3871..4690193 100644 --- a/arch/arm64/kernel/ras.c +++ b/arch/arm64/kernel/ras.c @@ -140,3 +140,34 @@ void ghes_arm_process_error(struct ghes *ghes, struct cper_sec_proc_arm *err) if (info_saved) 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);