From patchwork Wed Feb 1 17:16:49 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tyler Baicar X-Patchwork-Id: 9550259 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 915F5604A7 for ; Wed, 1 Feb 2017 17:18:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7FDD227F94 for ; Wed, 1 Feb 2017 17:18:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 741EC28451; Wed, 1 Feb 2017 17:18:05 +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=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=unavailable 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 24F6F2808C for ; Wed, 1 Feb 2017 17:18:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753540AbdBARRr (ORCPT ); Wed, 1 Feb 2017 12:17:47 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:35722 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752867AbdBARRo (ORCPT ); Wed, 1 Feb 2017 12:17:44 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id B34BE60BE6; Wed, 1 Feb 2017 17:17:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1485969463; bh=sBIxhKVHLLmZeeeJkEicSTXrHLRDo6qzIrx9v425lMg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=H4e+9RZ1CPRBkviMQHPjsvoYrHnf177FA4JBlkB/Xs3VT/E23sJVASLhpGUIFHaEU KqRme8nLElCdlPuTiQtTABv2iUWPZIXHdzlaSOnNigX2H+t2wtMo6EeVCpIXYG1/Xn 3jac4chXZFuEQbwBEK1rB3ZcIjgHXj2eayQTFFsA= Received: from tbaicar-lnx.qualcomm.com (unknown [129.46.14.132]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: tbaicar@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 27534608A5; Wed, 1 Feb 2017 17:17:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1485969446; bh=sBIxhKVHLLmZeeeJkEicSTXrHLRDo6qzIrx9v425lMg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pJc/tvRI8/pEqXyanswpQjGyFzqhu4ALAZeuVDvYOlTtgi6xcrQ4fnQDlNl9/CTHM nMdK/0Er46P0ZYQILil0bkAdAfOfNkUC7MvHPpV9jJvDavCkdrMfXxhows+XLxUKvC NNRb35oD7kuLGtUKG8SXPPF1nvsLxSNDf460Rn5k= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 27534608A5 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=tbaicar@codeaurora.org From: Tyler Baicar To: christoffer.dall@linaro.org, marc.zyngier@arm.com, pbonzini@redhat.com, rkrcmar@redhat.com, linux@armlinux.org.uk, catalin.marinas@arm.com, will.deacon@arm.com, rjw@rjwysocki.net, lenb@kernel.org, matt@codeblueprint.co.uk, robert.moore@intel.com, lv.zheng@intel.com, nkaje@codeaurora.org, zjzhang@codeaurora.org, mark.rutland@arm.com, james.morse@arm.com, akpm@linux-foundation.org, eun.taik.lee@samsung.com, sandeepa.s.prabhu@gmail.com, labbott@redhat.com, shijie.huang@arm.com, rruigrok@codeaurora.org, paul.gortmaker@windriver.com, tn@semihalf.com, fu.wei@linaro.org, rostedt@goodmis.org, bristot@redhat.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-efi@vger.kernel.org, devel@acpica.org, Suzuki.Poulose@arm.com, punit.agrawal@arm.com, astone@redhat.com, harba@codeaurora.org, hanjun.guo@linaro.org, john.garry@huawei.com, shiju.jose@huawei.com Cc: Tyler Baicar Subject: [PATCH V8 06/10] acpi: apei: panic OS with fatal error status block Date: Wed, 1 Feb 2017 10:16:49 -0700 Message-Id: <1485969413-23577-7-git-send-email-tbaicar@codeaurora.org> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1485969413-23577-1-git-send-email-tbaicar@codeaurora.org> References: <1485969413-23577-1-git-send-email-tbaicar@codeaurora.org> 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 From: "Jonathan (Zhixiong) Zhang" Even if an error status block's severity is fatal, the kernel does not honor the severity level and panic. With the firmware first model, the platform could inform the OS about a fatal hardware error through the non-NMI GHES notification type. The OS should panic when a hardware error record is received with this severity. Call panic() after CPER data in error status block is printed if severity is fatal, before each error section is handled. Signed-off-by: Jonathan (Zhixiong) Zhang Signed-off-by: Tyler Baicar Reviewed-by: James Morse --- drivers/acpi/apei/ghes.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index 8756172..86c1f15 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -133,6 +133,8 @@ static struct ghes_estatus_cache *ghes_estatus_caches[GHES_ESTATUS_CACHES_SIZE]; static atomic_t ghes_estatus_cache_alloced; +static int ghes_panic_timeout __read_mostly = 30; + static int ghes_ioremap_init(void) { ghes_ioremap_area = __get_vm_area(PAGE_SIZE * GHES_IOREMAP_PAGES, @@ -687,6 +689,13 @@ static int ghes_ack_error(struct acpi_hest_generic_v2 *generic_v2) return rc; } +static void __ghes_call_panic(void) +{ + if (panic_timeout == 0) + panic_timeout = ghes_panic_timeout; + panic("Fatal hardware error!"); +} + static int ghes_proc(struct ghes *ghes) { int rc; @@ -698,6 +707,10 @@ static int ghes_proc(struct ghes *ghes) if (ghes_print_estatus(NULL, ghes->generic, ghes->estatus)) ghes_estatus_cache_add(ghes->generic, ghes->estatus); } + if (ghes_severity(ghes->estatus->error_severity) >= GHES_SEV_PANIC) { + __ghes_call_panic(); + } + ghes_do_proc(ghes, ghes->estatus); if (IS_HEST_TYPE_GENERIC_V2(ghes)) { @@ -828,8 +841,6 @@ static inline void ghes_sea_remove(struct ghes *ghes) static LIST_HEAD(ghes_nmi); -static int ghes_panic_timeout __read_mostly = 30; - static void ghes_proc_in_irq(struct irq_work *irq_work) { struct llist_node *llnode, *next; @@ -922,9 +933,7 @@ static void __ghes_panic(struct ghes *ghes) __ghes_print_estatus(KERN_EMERG, ghes->generic, ghes->estatus); /* reboot to log the error! */ - if (panic_timeout == 0) - panic_timeout = ghes_panic_timeout; - panic("Fatal hardware error!"); + __ghes_call_panic(); } static int ghes_notify_nmi(unsigned int cmd, struct pt_regs *regs)