From patchwork Tue Apr 18 23:05:19 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tyler Baicar X-Patchwork-Id: 9686579 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 7EE99601C2 for ; Tue, 18 Apr 2017 23:08:51 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6F91127D4D for ; Tue, 18 Apr 2017 23:08:51 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 63A1A2839C; Tue, 18 Apr 2017 23:08:51 +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=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D021127D4D for ; 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Tue, 18 Apr 2017 23:05:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1492556760; bh=52PQYuhEi8J4Ht2knjGOV3Y5hgQDWbLuv6MMyLfhlbE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IxBUWVtQ1yV60LBc4Ze0IkSbnkEtYF1YQ0xq2GoUuRlzapjAMel7nJp9J0K9Blp+u DSIP/cyQTgn6Mxr46Rv68ZlKl4pGV0qT1TPhUEz5urN4rymMZZpvejkuIyDouxybnR eRXV1p9Im59KjUncDo+FwF+TGsyhBiTnjfHM3j7M= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org A68C860FF5 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, joe@perches.com, bp@alien8.de, rafael@kernel.org, tony.luck@intel.com, gengdongjiu@huawei.com, xiexiuqi@huawei.com Subject: [PATCH V15 07/11] acpi: apei: panic OS with fatal error status block Date: Tue, 18 Apr 2017 17:05:19 -0600 Message-Id: <1492556723-9189-8-git-send-email-tbaicar@codeaurora.org> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1492556723-9189-1-git-send-email-tbaicar@codeaurora.org> References: <1492556723-9189-1-git-send-email-tbaicar@codeaurora.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170418_160622_829040_494AD575 X-CRM114-Status: GOOD ( 13.47 ) 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: Tyler Baicar MIME-Version: 1.0 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 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 2d387f8..b91123f 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -134,6 +134,8 @@ 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, @@ -692,6 +694,13 @@ static int ghes_ack_error(struct acpi_hest_generic_v2 *generic_v2) return apei_write(val, &generic_v2->read_ack_register); } +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; @@ -699,6 +708,10 @@ static int ghes_proc(struct ghes *ghes) rc = ghes_read_estatus(ghes, 0); if (rc) goto out; + if (ghes_severity(ghes->estatus->error_severity) >= GHES_SEV_PANIC) { + __ghes_print_estatus(KERN_EMERG, ghes->generic, ghes->estatus); + __ghes_call_panic(); + } if (!ghes_estatus_cached(ghes->estatus)) { if (ghes_print_estatus(NULL, ghes->generic, ghes->estatus)) ghes_estatus_cache_add(ghes->generic, ghes->estatus); @@ -835,8 +848,6 @@ 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; @@ -929,9 +940,7 @@ 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)