From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=I/I1=QE=vger.kernel.org=linux-kernel-owner@kernel.org>
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on
	aws-us-west-2-korg-lkml-1.web.codeaurora.org
X-Spam-Level: 
X-Spam-Status: No, score=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS autolearn=ham autolearn_force=no
	version=3.4.0
Received: from mail.kernel.org (mail.kernel.org [198.145.29.99])
	by smtp.lore.kernel.org (Postfix) with ESMTP id AAFDAC282C8
	for <linux-kernel@archiver.kernel.org>; Mon, 28 Jan 2019 12:26:16 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [209.132.180.67])
	by mail.kernel.org (Postfix) with ESMTP id 7EFD02171F
	for <linux-kernel@archiver.kernel.org>; Mon, 28 Jan 2019 12:26:16 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1726805AbfA1M0O (ORCPT
        <rfc822;linux-kernel@archiver.kernel.org>);
        Mon, 28 Jan 2019 07:26:14 -0500
Received: from foss.arm.com ([217.140.101.70]:44630 "EHLO foss.arm.com"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1726415AbfA1M0O (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
        Mon, 28 Jan 2019 07:26:14 -0500
Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249])
        by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D6579EBD;
        Mon, 28 Jan 2019 04:26:13 -0800 (PST)
Received: from big-swifty.misterjones.org (big-swifty.cambridge.arm.com [10.1.39.122])
        by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 26D1B3F59C;
        Mon, 28 Jan 2019 04:26:10 -0800 (PST)
Date:   Mon, 28 Jan 2019 12:26:13 +0000
Message-ID: <86sgxdufx6.wl-marc.zyngier@arm.com>
From:   Marc Zyngier <marc.zyngier@arm.com>
To:     Julien Thierry <julien.thierry@arm.com>
Cc:     <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>, <daniel.thompson@linaro.org>,
        <joel@joelfernandes.org>, <christoffer.dall@arm.com>,
        <james.morse@arm.com>, <catalin.marinas@arm.com>,
        <will.deacon@arm.com>, <mark.rutland@arm.com>,
        Dave Martin <dave.martin@arm.com>
Subject: Re: [PATCH v9 23/26] arm64: Handle serror in NMI context
In-Reply-To: <1548084825-8803-24-git-send-email-julien.thierry@arm.com>
References: <1548084825-8803-1-git-send-email-julien.thierry@arm.com>
        <1548084825-8803-24-git-send-email-julien.thierry@arm.com>
User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue)
 FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 EasyPG/1.0.0 Emacs/25.1
 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO)
Organization: ARM Ltd
MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue")
Content-Type: text/plain; charset=US-ASCII
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Mon, 21 Jan 2019 15:33:42 +0000,
Julien Thierry <julien.thierry@arm.com> wrote:
> 
> Per definition of the daifflags, Serrors can occur during any interrupt
> context, that includes NMI contexts. Trying to nmi_enter in an nmi context
> will crash.
> 
> Skip nmi_enter/nmi_exit when serror occurred during an NMI.
> 
> Suggested-by: James Morse <james.morse@arm.com>
> Signed-off-by: Julien Thierry <julien.thierry@arm.com>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will.deacon@arm.com>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: Dave Martin <dave.martin@arm.com>
> Cc: James Morse <james.morse@arm.com>

Acked-by: Marc Zyngier <marc.zyngier@arm.com>

	M.

-- 
Jazz is not dead, it just smell funny.