Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
To:     linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org
Cc:     joro@8bytes.org, will@kernel.org, jsnitsel@redhat.com,
        pmenzel@molgen.mpg.de, Jon.Grimm@amd.com,
        Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Subject: [PATCH 0/2] iommu/amd: Revert and remove failing PMC test
Date:   Fri,  9 Apr 2021 03:58:46 -0500
Message-Id: <20210409085848.3908-1-suravee.suthikulpanit@amd.com>
Content-Type: text/plain
MIME-Version: 1.0
X-MS-Exchange-MessageSentRepresentingType: 1
Received: from ethanolx5673host.amd.com (165.204.78.2) by SN6PR01CA0011.prod.exchangelabs.com (2603:10b6:805:b6::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4020.17 via Frontend Transport; Fri, 9 Apr 2021 08:47:30 +0000
X-MS-PublicTrafficType: Email
X-MS-Office365-Filtering-Correlation-Id: 6588fbdf-471b-43d8-d7aa-08d8fb341c7a
X-MS-TrafficTypeDiagnostic: BY5PR12MB3889:
X-MS-Exchange-Transport-Forked: True
X-Microsoft-Antispam-PRVS: <BY5PR12MB3889BA796A85F81C827E42CBF3739@BY5PR12MB3889.namprd12.prod.outlook.com>
X-MS-Oob-TLC-OOBClassifiers: OLM:7691;
X-MS-Exchange-SenderADCheck: 1
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:BYAPR12MB4597.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(376002)(136003)(396003)(366004)(346002)(39860400002)(7696005)(52116002)(38100700001)(36756003)(26005)(38350700001)(83380400001)(4326008)(8936002)(8676002)(66946007)(44832011)(5660300002)(2616005)(86362001)(478600001)(2906002)(66476007)(1076003)(16526019)(6486002)(186003)(956004)(316002)(6666004)(66556008)(4744005);DIR:OUT;SFP:1101;
X-MS-Exchange-AntiSpam-MessageData: =?us-ascii?Q?0bfRJzq3Hjhgl+i5K7rrHv2qjlnQuvYTuMDFrllp4EJqprh2wCRs+2NBhoLC?=
 =?us-ascii?Q?z7RhnSMSvnmpy3jl9TxzlzFRnnNlm5GwIX35tTXVOeNlwUu+eqkGERjyhrZc?=
 =?us-ascii?Q?RBkP8oLgA9mI/a+Lv6YupQw/5WdpACHIvKn/Un1WwspmvdnG1tuPRk4bVD9Y?=
 =?us-ascii?Q?g1Danog566NNeFNdpoGvRdRsY74B0NlDkOGGMqJrEPlv7sN9Y8nxGxAU6jnD?=
 =?us-ascii?Q?pGXF27wra/hLO8gfCDQL2sGO1KUo/YhyelwbI+1RINfxoygm7nFXYktXWMd/?=
 =?us-ascii?Q?NNrBckwOSqNqvdKWUFei7bGnXrofpynp2+lZ/a4Vl33XThH1QKDbdOMH3fjK?=
 =?us-ascii?Q?HMWpxToyuIIlCbBeMdMEaSLGd22InbFMrgIxCezIz6VwP/uCj9b2WGIz+SqC?=
 =?us-ascii?Q?2YHCm3NoKqM+G25BASzZp+YC1HdcQKsKBTEg7n2qczPKI5XAbAo99n2fW68P?=
 =?us-ascii?Q?ucN5COziR75KMfb5K9lX3XqjlI0qXLBW/sD8h/ecPEiIgbOxIImkkAaCND1g?=
 =?us-ascii?Q?sW8bWRBpdUmToyUMJz1QmgB0LAt19R7/aYaLulg3gOU2/ZqcUdtCj4uwsc6O?=
 =?us-ascii?Q?qSH+SVKRRFqkmM4aCXKd/SaQp/MOEuaIXOkklTWij21Jj8qX7v2pv//GXMBv?=
 =?us-ascii?Q?ONMm1vkZibvulpigTDoOkDqUP3vl8XCU7NNK7B79atXHLOLOrE0db6ZnQ3+e?=
 =?us-ascii?Q?YiVQBgH8aCe0cbQERrIs02QVNEla8fxNM6fW7EIn9E8IzMWGIR6FmRsJQLU8?=
 =?us-ascii?Q?wIFIgnxeXr7w5QcP+Fezfh+sXqxN/t2dnIX3ZQY/fYuTwB/GIStFX/mwCVDm?=
 =?us-ascii?Q?ci8r1bxVcE1PO1BjHq0gVvcMGNtAt9r+aySg3y4r/61T0opdKt00/1c+okp0?=
 =?us-ascii?Q?3BR4bzs0XzjD4i8eLoveDmJpyeXH/w89z5TKQE3ks3qpuaDPaToPIZfp1lMz?=
 =?us-ascii?Q?GTANM4ot5+EaY6DCYfATOEAXqc9O7XTTqkYtz1KmZZHZMfc0UARRxl8YLE1K?=
 =?us-ascii?Q?upbOk721JuSHIw9Yu+vGRB7r4SIdbxrq22NLsDnQWdvDgvrNsOmAsCTt34TC?=
 =?us-ascii?Q?PKpas6fLh7GrvyZvH3Fm2HGbI2XeS4cfd9A6ytY5+K5MEOaUiO76JMfT0kuI?=
 =?us-ascii?Q?a0Kpq/pTivBGKYLoiNujweqxaf4qW2EodGVWSLacFjnEVeEsQO47p6ZCXmi8?=
 =?us-ascii?Q?sDuDMKCW1Bf4aLBVykDSimT5CQTPRZim1oeklKmn1dZfMuwECm+HUExSrQlC?=
 =?us-ascii?Q?lU6x18Ea30SvGVJU4RPW7DPAYBC2JBP42btFrCwo+LOF5Lwm8iXjc1KNKKah?=
 =?us-ascii?Q?+Sir5xcnw6eVrYfV3b8HIZOA?=
X-OriginatorOrg: amd.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 6588fbdf-471b-43d8-d7aa-08d8fb341c7a
X-MS-Exchange-CrossTenant-AuthSource: BYAPR12MB4597.namprd12.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Apr 2021 08:47:31.1156
 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d
X-MS-Exchange-CrossTenant-MailboxType: HOSTED
X-MS-Exchange-CrossTenant-UserPrincipalName: FNSUMrGINxbOqiXfnqoneTCYKo4jJSyWBdFxW8i1NPSFtvZLaSituLWAEPEvQ7cNY1ZyaGJJDOYYmMo6PkBP7g==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB3889
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

This has prevented PMC to work on more recent desktop/mobile platforms,
where the PMC power-gating is normally enabled. After consulting
with HW designers and IOMMU maintainer, we have decide to remove
the legacy test altogether to avoid future PMC enabling issues.

Thanks the community for helping to test, investigate, provide data
and report issues on several platforms in the field.

Regards,
Suravee 

Paul Menzel (1):
  Revert "iommu/amd: Fix performance counter initialization"

Suravee Suthikulpanit (1):
  iommu/amd: Remove performance counter pre-initialization test

 drivers/iommu/amd/init.c | 49 ++--------------------------------------
 1 file changed, 2 insertions(+), 47 deletions(-)

-- 
2.17.1