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Bottomley" , Jinyoung Choi , Kiwoong Kim , open list Subject: RE: [PATCH v4 02/16] ufs: core: Probe for ext_iid support Thread-Topic: [PATCH v4 02/16] ufs: core: Probe for ext_iid support Thread-Index: AQHY9HOQpOqayFOFs0emAApStvxcaq43+dAQ Date: Thu, 10 Nov 2022 10:47:06 +0000 Message-ID: References: <94a483673c3c7e03d8897fffd6e6145027979517.1668022680.git.quic_asutoshd@quicinc.com> In-Reply-To: <94a483673c3c7e03d8897fffd6e6145027979517.1668022680.git.quic_asutoshd@quicinc.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=wdc.com; x-ms-publictraffictype: Email x-ms-traffictypediagnostic: DM6PR04MB6575:EE_|CH0PR04MB8020:EE_ x-ms-office365-filtering-correlation-id: f0bc4245-5529-4df0-1580-08dac308e909 wdcipoutbound: EOP-TRUE x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DM6PR04MB6575.namprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230022)(4636009)(136003)(366004)(376002)(396003)(39860400002)(346002)(451199015)(55016003)(83380400001)(8936002)(41300700001)(7416002)(5660300002)(38070700005)(4744005)(66476007)(66556008)(71200400001)(64756008)(478600001)(52536014)(76116006)(2906002)(66446008)(86362001)(33656002)(8676002)(7696005)(186003)(54906003)(316002)(4326008)(110136005)(6506007)(66946007)(82960400001)(26005)(9686003)(38100700002)(122000001);DIR:OUT;SFP:1102; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM6PR04MB6575.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: f0bc4245-5529-4df0-1580-08dac308e909 X-MS-Exchange-CrossTenant-originalarrivaltime: 10 Nov 2022 10:47:06.2719 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: tsUl6JiDH3tjvTxiDW1bCsSPAmFw1egKYomOJ/kbzWjiu792Hq6TEwnn6eyn9NhhK/bQgvOJAi3Gt3Y4pZfVLA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR04MB8020 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >=20 > Task Tag is limited to 8 bits and this restricts the number of active IOs= to 255. > In Multi-circular queue mode, this may not be enough. > The specification provides EXT_IID which can be used to increase the numb= er of > IOs if the UFS device and UFSHC support it. > This patch adds support to probe for ext_iid support in ufs device and UF= SHC. >=20 > Co-developed-by: Can Guo > Signed-off-by: Can Guo > Signed-off-by: Asutosh Das Reviewed-by: Avri Altman