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Mon, 17 Aug 2020 15:18:29 +0000 Date: Mon, 17 Aug 2020 10:18:21 -0500 From: Yazen Ghannam To: Borislav Petkov Cc: linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org, tony.luck@intel.com, x86@kernel.org Subject: Re: [PATCH] x86/MCE/AMD, EDAC/mce_amd: Remove struct smca_hwid.xec_bitmap Message-ID: <20200817151821.GA1095089@yaz-nikka.amd.com> References: <20200720145353.43924-1-Yazen.Ghannam@amd.com> <20200817093956.GC549@zn.tnic> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200817093956.GC549@zn.tnic> X-ClientProxiedBy: DM3PR12CA0093.namprd12.prod.outlook.com (2603:10b6:0:55::13) To BN8PR12MB3108.namprd12.prod.outlook.com (2603:10b6:408:40::20) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from yaz-nikka.amd.com (165.204.77.1) by DM3PR12CA0093.namprd12.prod.outlook.com (2603:10b6:0:55::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3283.15 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 3f3774bf-eaea-4375-89f8-08d842c0cb6b X-MS-Exchange-CrossTenant-AuthSource: BN8PR12MB3108.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Aug 2020 15:18:28.9100 (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: kTbDKjXHNMHiNaAxYm5O4w+0c80cZidks7Q48w1ZFtfCEHrBvwaGQFh/MKGABtDFhXDizCAJB4dMgmapZIi8qA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR12MB1379 Sender: linux-edac-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org On Mon, Aug 17, 2020 at 11:40:07AM +0200, Borislav Petkov wrote: > On Mon, Jul 20, 2020 at 02:53:53PM +0000, Yazen Ghannam wrote: > > From: Yazen Ghannam > > > > The Extended Error Code Bitmap (xec_bitmap) for a Scalable MCA bank type > > was intended to be used by the kernel to filter out invalid error codes > > on a system. However, this is unnecessary because the hardware will only > > report valid error codes. > > That's a kinda bold statement. :) > Yeah, I'm trying to keep "may" out of my vocabulary. :) > Are you saying, you wanna trust verification and that check is totally > useless? > I do. This check was added because I wasn't sure what to expect with this new architecural extension. But after a few product releases, it has been unnecessary. And I don't see a need for it with future systems. Thanks, Yazen