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Mon, 14 Apr 2025 12:38:45 +0000 Subject: Re: [REGRESSION] e1000e heavy packet loss on Meteor Lake - 6.14.2 To: =?UTF-8?Q?Marek_Marczykowski-G=c3=b3recki?= , Jesse Brandeburg , Tony Nguyen , , CC: , , Sasha Levin References: From: "Lifshits, Vitaly" Message-ID: Date: Mon, 14 Apr 2025 15:38:39 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 In-Reply-To: Content-Type: text/plain; charset="utf-8"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-ClientProxiedBy: TL0P290CA0006.ISRP290.PROD.OUTLOOK.COM (2603:1096:950:5::9) To MW4PR11MB5934.namprd11.prod.outlook.com (2603:10b6:303:189::7) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MW4PR11MB5934:EE_|DM4PR11MB6214:EE_ X-MS-Office365-Filtering-Correlation-Id: 1cd5f246-5551-44b5-17ce-08dd7b514bee X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|376014; 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And > the e1000e driver is running in a Xen HVM (with PCI passthrough). > Interestingly, I have also another one with Intel Core Ultra 7 155H > where the issue does not happen. I don't see what is different about > network adapter there, they look identical on lspci (but there are > differences about other devices)... > > I see the commit above was already backported to other stable branches > too... > > #regzbot introduced: 85f6414167da39e0da30bf370f1ecda5a58c6f7b > Thank you for this report. Do you see the high packet loss without the virtualization? Can you please share the lspci output? Does your switch/link partner support flow control? if it is configurable can you try to enable it? Do you see any errors in dmesg related to the e1000e driver?