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Wed, 30 Sep 2020 08:51:54 +0000 Received: from OSAPR01MB4227.jpnprd01.prod.outlook.com ([fe80::b5c4:75d0:68ff:e400]) by OSAPR01MB4227.jpnprd01.prod.outlook.com ([fe80::b5c4:75d0:68ff:e400%6]) with mapi id 15.20.3412.029; Wed, 30 Sep 2020 08:51:54 +0000 From: "ito-yuichi@fujitsu.com" To: 'Marc Zyngier' CC: "sumit.garg@linaro.org" , "tglx@linutronix.de" , "jason@lakedaemon.net" , "catalin.marinas@arm.com" , "will@kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH 0/2] Enable support IPI_CPU_CRASH_STOP to be pseudo-NMI Thread-Topic: [PATCH 0/2] Enable support IPI_CPU_CRASH_STOP to be pseudo-NMI Thread-Index: AQHWki1OzvWvE6qquUyffKCpvoCHGKl9XDZAgABqwgCAAQTGkIAArc6AgAFayhA= Date: Wed, 30 Sep 2020 08:51:54 +0000 Message-ID: References: <20200924044236.1245808-1-ito-yuichi@fujitsu.com> <498b10b51f5c961f00b3d18e17c52e94@kernel.org> <74f6c812041970cb8f5e8c0da22fca92@kernel.org> In-Reply-To: <74f6c812041970cb8f5e8c0da22fca92@kernel.org> Accept-Language: ja-JP, en-US Content-Language: ja-JP X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: kernel.org; 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x-ms-exchange-antispam-messagedata: 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 x-ms-exchange-transport-forked: True Content-Type: text/plain; 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: OSAPR01MB4227.jpnprd01.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: bdba938a-d33a-4ca2-15ca-08d8651e14dc X-MS-Exchange-CrossTenant-originalarrivaltime: 30 Sep 2020 08:51:54.5587 (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: pnfXPRjPIebiRT1GjAPSwil/tPfL48OfpzBxBCg28zw8YZDULcDtpULmPTS/Ls0uMNjp7S0Dr3NDHAlzq1WL7cJg2TDc6Sbn0k7zk5A9f7s= X-MS-Exchange-Transport-CrossTenantHeadersStamped: OSBPR01MB4741 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Marc >=20 > On 2020-09-29 06:50, ito-yuichi@fujitsu.com wrote: > > Hi Marc >=20 > [...] >=20 > >> >> The patch has been tested on ThunderX. > >> > >> Which ThunderX? TX2 (at least the incarnation I used in the past) > >> wasn't able > >> to correctly deal with priorities. > > > > I tried it with ThunderX CN8890. > > If you tell me steps to reproduce the problem of TX2, I will > > investigate it with TX as well. >=20 > PMR_EL1 reporting fantasy values, non-uniform priority support across > the interrupt classes, and generally prone to lockups. The original TX > is a very different machine though (TX 1 and 2 only share the engraving > of the manufacturer on the heat-spreader). Thank you for the information. I will check if we have a ThunderX1 or X2 environment. If we have either on= e, I will investigate it. > M. > -- > Jazz is not dead. It just smells funny... Thank you and best regards, Yuichi Ito