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Fri, 7 Sep 2018 00:38:13 +0000 Received: from CY4PR21MB0776.namprd21.prod.outlook.com ([fe80::7c3a:eea8:1391:1611]) by CY4PR21MB0776.namprd21.prod.outlook.com ([fe80::7c3a:eea8:1391:1611%7]) with mapi id 15.20.1143.008; Fri, 7 Sep 2018 00:38:13 +0000 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Miao Zhong , Will Deacon , Robin Murphy , Sasha Levin Subject: [PATCH AUTOSEL 4.14 03/67] iommu/arm-smmu-v3: sync the OVACKFLG to PRIQ consumer register Thread-Topic: [PATCH AUTOSEL 4.14 03/67] iommu/arm-smmu-v3: sync the OVACKFLG to PRIQ consumer register Thread-Index: AQHURkLx6i0GvT6U70W6+LfjYtQoYw== Date: Fri, 7 Sep 2018 00:37:22 +0000 Message-ID: <20180907003716.57737-3-alexander.levin@microsoft.com> References: <20180907003716.57737-1-alexander.levin@microsoft.com> In-Reply-To: <20180907003716.57737-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;CY4PR21MB0503;6:neki7T1mCBqJ9Qdm4k6GpHbDdY4kwASEWSg9mODhf1JZLfiz/5XCtfrGARt8CTne3MAG9MONCrXWS2Bupwvnw+/wpaqMtEr5hml7iIBSp9c47v0Fg4sF2h8yfJPO8DQl6QTFhqaamnTuKG4pgYPctcHds+8N9nx1lck69xCSK4EI3WNpP5+1KACwOxvTAjM013hNmDL2FR5/9q2fkjIDc+gbVWqbO2q5a2xOFHbazYTIo0NDMzR7wXLpywPr98N5+MLo5wuEj7Kp9/MoF+/7BeJWPU+Rg21ojJc1taLxVYrzEXMywqqDDdEFlKvPCwL7gUKFekZGqJss6bzMnRqDrbakXK3Lm9KqBNAsFk1L5oCzW3yAEtgi2u/OkS4bS1GnVyJKGuni1MUukoauUMUbP5v/eaHgoRIyvgfVcdLDERjAcAfEYMQejW3rRSIljAfpURzPcfeSKp3HPkvztWTDhQ==;5:sun/uNwbzarNtabeC0l0xRiaG2tan71EKnOrqmvM0ZnX/73SmRw7oAaeRW1OThVKz/aw4eUowDVN/2OXt4tgsiEkQ0Adq588iTo5W3rgCCK8uamVDz+2pbWqaUxVm0y5GMHxOuGHx8XHZh/zWIS34aOqFdQwDQ1y5PgmyMF3GIg=;7:k9tWNbywTrSyt22cne4g55ZwA6igMreVfXg6i2kBS9IbRoQXFg8oFu7zZiG3eioIS3OI9v3MwaI77c64BGvizZWwPqRjBzcn+I2BScnMQBOrY5b6g7c6uYWTIVLr4Ob/6cYuYuWMXdTAhAxPCMGMiFkxwu5ZaLPWoKNNVlUc0wJnktV4iJjOV8t/DzAtARBs9pOFUvG8+SJxHR/Wx5TU1YGFRubcgPnzOVhdnhDVEPlKop80ReH7e9tUnSvEb3L+ x-ms-office365-filtering-correlation-id: 00280b05-1f1a-4ab8-3599-08d6145a31d6 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989137)(4534165)(4627221)(201703031133081)(201702281549075)(8990107)(5600074)(711020)(4618075)(2017052603328)(7193020);SRVR:CY4PR21MB0503; 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received-spf: None (protection.outlook.com: microsoft.com does not designate permitted sender hosts) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-message-info: WS6IdBzaAXcGtUZ3+J3MM80bUbbbl78DZPNdFakfbT2IXU0rlbjyL/NmHHDxJGjwZZkpuO/TCgRz0q0AA/FJKQcxu9WwUJQw8qGHUTt0UriqLGgEBmjlPNXCThfdnkB15yXQsaB1bz+ptJk6uvYmkU1Vuc3rojPjDi48QKW8Nf85AFzlDD3hsW44KdgpQLEank8MGO2OG5pHubmIN/4UttKLNoj9ZEOqvCrVeGhm0taraOZgmxU1/uCnrwmL7DgmzGVuhrWOiL/cZGekArpmBRWzwpvFlh3OBFSACMiNeO6mGWf9rBAnP1/jEWtwrxD2rF6o+pMSiSbtv3YAgDh0QxKzsLEsTe87PqOk/Ots7T8= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 00280b05-1f1a-4ab8-3599-08d6145a31d6 X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Sep 2018 00:37:22.8956 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR21MB0503 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Miao Zhong [ Upstream commit 0d535967ac658966c6ade8f82b5799092f7d5441 ] When PRI queue occurs overflow, driver should update the OVACKFLG to the PRIQ consumer register, otherwise subsequent PRI requests will not be processed. Cc: Will Deacon Cc: Robin Murphy Signed-off-by: Miao Zhong Signed-off-by: Will Deacon Signed-off-by: Sasha Levin --- drivers/iommu/arm-smmu-v3.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 8f7a3c00b6cf..26e99c03390f 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1272,6 +1272,7 @@ static irqreturn_t arm_smmu_priq_thread(int irq, void= *dev) =20 /* Sync our overflow flag, as we believe we're up to speed */ q->cons =3D Q_OVF(q, q->prod) | Q_WRP(q, q->cons) | Q_IDX(q, q->cons); + writel(q->cons, q->cons_reg); return IRQ_HANDLED; } =20 --=20 2.17.1