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Fri, 25 Feb 2022 10:35:10 +0000 From: "hasegawa-hitomi@fujitsu.com" To: "gregkh@linuxfoundation.org" , "jirislaby@kernel.org" List-Id: CC: Arnd Bergmann , Linux ARM , SoC Team , Olof Johansson , Catalin Marinas , Will Deacon Subject: Re: [PATCH] soc: fujitsu: Add A64FX diagnostic interrupt driver Thread-Topic: [PATCH] soc: fujitsu: Add A64FX diagnostic interrupt driver Thread-Index: AQHYJKtWrul8ggSTx0iTWIouzkxBW6yZHSiAgAZKI9KABLN+gg== Date: Fri, 25 Feb 2022 10:35:10 +0000 Message-ID: References: <20220218092010.1327309-1-hasegawa-hitomi@fujitsu.com> In-Reply-To: Accept-Language: ja-JP, en-US Content-Language: ja-JP X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: MSIP_Label_a7295cc1-d279-42ac-ab4d-3b0f4fece050_Enabled=True;MSIP_Label_a7295cc1-d279-42ac-ab4d-3b0f4fece050_SiteId=a19f121d-81e1-4858-a9d8-736e267fd4c7;MSIP_Label_a7295cc1-d279-42ac-ab4d-3b0f4fece050_SetDate=2022-02-25T10:33:32.424Z;MSIP_Label_a7295cc1-d279-42ac-ab4d-3b0f4fece050_Name=FUJITSU-RESTRICTED;MSIP_Label_a7295cc1-d279-42ac-ab4d-3b0f4fece050_ContentBits=0;MSIP_Label_a7295cc1-d279-42ac-ab4d-3b0f4fece050_Method=Standard; 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charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: fujitsu.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: OSZPR01MB7050.jpnprd01.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 515fabb5-0048-42d5-f13e-08d9f84a7fac X-MS-Exchange-CrossTenant-originalarrivaltime: 25 Feb 2022 10:35:10.2319 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a19f121d-81e1-4858-a9d8-736e267fd4c7 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: aoGBllEDsOYEL2CBVuaAsOs5rCFzEIl1SFPlbhhERhEX12+UuVUD1cgGJ9QFoO/elu2FUjaKsJGnSWanyChge+jitOx96Kdgm5T1k/2CsAk= X-MS-Exchange-Transport-CrossTenantHeadersStamped: OSBPR01MB2646 Hi Greg and Jiri,=0A= =0A= I'm trying to implement a feature for A64FX that will panic when=0A= a diagnostic interrupt is received.=0A= Arnd suggested that handle_sysrq() should be used=0A= but I'm wonderingif it's ok to call it in NMI.=0A= Would you please let me know if we can call handle_sysrq() in NMI?=0A= =0A= Thank you.=0A= Hitomi Hasegawa= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 51A99C433F5 for ; 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Greg and Jiri, I'm trying to implement a feature for A64FX that will panic when a diagnostic interrupt is received. Arnd suggested that handle_sysrq() should be used but I'm wonderingif it's ok to call it in NMI. Would you please let me know if we can call handle_sysrq() in NMI? Thank you. Hitomi Hasegawa _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel