From patchwork Mon Apr 9 21:36:36 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dongjiu Geng X-Patchwork-Id: 10331351 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 CB5CC6020F for ; Mon, 9 Apr 2018 13:33:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BE24728AA8 for ; Mon, 9 Apr 2018 13:33:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B263C28AAB; Mon, 9 Apr 2018 13:33:37 +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=-6.0 required=2.0 tests=BAYES_00, DATE_IN_FUTURE_06_12, MAILING_LIST_MULTI,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 5D59828AA8 for ; Mon, 9 Apr 2018 13:33:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752369AbeDINbx (ORCPT ); Mon, 9 Apr 2018 09:31:53 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:6732 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752364AbeDINbT (ORCPT ); Mon, 9 Apr 2018 09:31:19 -0400 Received: from DGGEMS403-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 0C11C3C02876D; Mon, 9 Apr 2018 21:31:01 +0800 (CST) Received: from localhost.localdomain (10.143.28.90) by DGGEMS403-HUB.china.huawei.com (10.3.19.203) with Microsoft SMTP Server id 14.3.361.1; Mon, 9 Apr 2018 21:30:55 +0800 From: Dongjiu Geng To: , , , , , , , , , , , , , , , , CC: , , Subject: [PATCH v11 4/4] arm64: handle NOTIFY_SEI notification by the APEI driver Date: Tue, 10 Apr 2018 05:36:36 +0800 Message-ID: <1523309796-36423-5-git-send-email-gengdongjiu@huawei.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1523309796-36423-1-git-send-email-gengdongjiu@huawei.com> References: <1523309796-36423-1-git-send-email-gengdongjiu@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.143.28.90] 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 Add a helper to handle the NOTIFY_SEI notification, when kernel gets the NOTIFY_SEI notification, call this helper and let APEI driver to handle this notification. Signed-off-by: Dongjiu Geng --- arch/arm64/include/asm/system_misc.h | 1 + arch/arm64/kernel/traps.c | 4 ++++ arch/arm64/mm/fault.c | 10 ++++++++++ 3 files changed, 15 insertions(+) diff --git a/arch/arm64/include/asm/system_misc.h b/arch/arm64/include/asm/system_misc.h index 07aa8e3..9ee13ad 100644 --- a/arch/arm64/include/asm/system_misc.h +++ b/arch/arm64/include/asm/system_misc.h @@ -57,6 +57,7 @@ void hook_debug_fault_code(int nr, int (*fn)(unsigned long, unsigned int, }) int handle_guest_sea(phys_addr_t addr, unsigned int esr); +int handle_guest_sei(void); #endif /* __ASSEMBLY__ */ diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index bbb0fde..d888eb2 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -681,6 +681,10 @@ bool arm64_is_fatal_ras_serror(struct pt_regs *regs, unsigned int esr) { u32 aet = arm64_ras_serror_get_severity(esr); + /* The APEI driver may handle this RAS error. */ + if (!handle_guest_sei()) + return false; + switch (aet) { case ESR_ELx_AET_CE: /* corrected error */ case ESR_ELx_AET_UEO: /* restartable, not yet consumed */ diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index f76bb2c..8f29bd8 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -683,6 +683,16 @@ int handle_guest_sea(phys_addr_t addr, unsigned int esr) return ret; } +int handle_guest_sei(void) +{ + int ret = -ENOENT; + + if (IS_ENABLED(CONFIG_ACPI_APEI_SEI)) + ret = ghes_notify_sei(); + + return ret; +} + asmlinkage void __exception do_mem_abort(unsigned long addr, unsigned int esr, struct pt_regs *regs) {