From patchwork Tue May 15 20:58:07 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dongjiu Geng X-Patchwork-Id: 10401065 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 99594601C8 for ; Tue, 15 May 2018 12:54:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 84243287AC for ; Tue, 15 May 2018 12:54:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 78B5B287B4; Tue, 15 May 2018 12:54:56 +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=-1.0 required=2.0 tests=BAYES_00, DATE_IN_FUTURE_06_12, DKIM_SIGNED, DKIM_VALID, MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E60A3287AC for ; Tue, 15 May 2018 12:54:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=l2x1H9ALwzSYN6CyFVSDAe+XQ0bh31sdJ+93AbkUKGQ=; b=XGJhy+QL0xUjzj 4cW9osyfsYODrAnzbyCPD8PndLU1KvxecXGdY6w/9ARBvoQAcAvh60Fxcc2EBETG9mKLfYM3oL3MS 2n4wUvOIZs9fWdzbaoXJ8aOkvtOBSQbtJoyJ6FSiETRAZtaCyXR3KE+25tlP9HMwxKuGGTPLLw+d6 FZIrsdFdaOMYCg/jQBJ9NAGigVnH2VM8Urs3tzu1TZrLhM3ktLPfBpN4mBJy2Z8xlrMfZgEnUVOgS CMWt11XUaVKgFKtMFasGg5fZUydLPUqk1ElL1pPD40kCsNMu2zgQcpmPbkP4dKUtvd2iMR/gaImIs yhr1XDnumaKgn8b1Gmvw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fIZTZ-0004Gh-5R; Tue, 15 May 2018 12:54:45 +0000 Received: from szxga05-in.huawei.com ([45.249.212.191] helo=huawei.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fIZRx-00030z-3q for linux-arm-kernel@lists.infradead.org; Tue, 15 May 2018 12:53:08 +0000 Received: from DGGEMS407-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 3EDDDDB64E1AB; Tue, 15 May 2018 20:52:35 +0800 (CST) Received: from localhost.localdomain (10.143.28.90) by DGGEMS407-HUB.china.huawei.com (10.3.19.207) with Microsoft SMTP Server id 14.3.382.0; Tue, 15 May 2018 20:52:29 +0800 From: Dongjiu Geng To: , , , , , , , , , , , , , , , , Subject: [PATCH v12 4/4] arm64: handle NOTIFY_SEI notification by the APEI driver Date: Wed, 16 May 2018 04:58:07 +0800 Message-ID: <1526417887-25843-5-git-send-email-gengdongjiu@huawei.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1526417887-25843-1-git-send-email-gengdongjiu@huawei.com> References: <1526417887-25843-1-git-send-email-gengdongjiu@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.143.28.90] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180515_055305_392408_CDFE16F9 X-CRM114-Status: GOOD ( 12.04 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: zhengxiang9@huawei.com, huangshaoyu@huawei.com, gengdongjiu@huawei.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.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) {