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Mon, 31 Jan 2022 04:21:59 +0000 Received: from DBAPR08MB5814.eurprd08.prod.outlook.com ([fe80::7c20:8c83:fc45:db99]) by DBAPR08MB5814.eurprd08.prod.outlook.com ([fe80::7c20:8c83:fc45:db99%7]) with mapi id 15.20.4930.021; Mon, 31 Jan 2022 04:21:58 +0000 From: Honnappa Nagarahalli To: wangyunjian , "dev@dpdk.org" , "users@dpdk.org" CC: Feifei Wang , Ruifeng Wang , Huangshaozhang , dingxiaoxiong , Honnappa Nagarahalli , nd Subject: RE: [dpdk-dev][dpdk-users] A problem about memory may not be all-zero allocated by rte_zmalloc_socket() Thread-Topic: [dpdk-dev][dpdk-users] A problem about memory may not be all-zero allocated by rte_zmalloc_socket() Thread-Index: AdgViF0h9zoMAuSNQ6SwzCLA7pDXJwA0WT2g Date: Mon, 31 Jan 2022 04:21:57 +0000 Message-ID: References: <61c1d85e0f8a42d4812830864fc59b0a@huawei.com> In-Reply-To: <61c1d85e0f8a42d4812830864fc59b0a@huawei.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ts-tracking-id: 3CB3805F6BEEF0449742AD4370EA7686.0 x-checkrecipientchecked: true Authentication-Results-Original: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=arm.com; 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DIR:OUT; SFP:1101; X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 31 Jan 2022 04:22:14.5760 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 649c700c-f40a-4f8c-e7b5-08d9e4714263 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d; Ip=[63.35.35.123]; Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: DB5EUR03FT052.eop-EUR03.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR08MB3295 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org --_000_DBAPR08MB58145AE8598C5B3E38A91AF298259DBAPR08MB5814eurp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Yunjian, That's interesting. Is it possible to elaborate the use cas= e or possibly provide the code snippet? It is possible that it is a synchronization problem due to relaxed memory m= odel that Arm architecture uses. There could be a barrier missing in the co= de. Thanks, Honnappa From: wangyunjian Sent: Saturday, January 29, 2022 9:21 PM To: dev@dpdk.org; users@dpdk.org Cc: Feifei Wang ; Ruifeng Wang = ; Huangshaozhang ; dingxiaoxiong Subject: [dpdk-dev][dpdk-users] A problem about memory may not be all-zero = allocated by rte_zmalloc_socket() Hi, all There's a problem that the memory are allocated by rte_zmalloc_socket() may not be all-zero on the ARM platform. However, the x86 platform does not have this problem. Any ideas ? Thanks, Yunjian --_000_DBAPR08MB58145AE8598C5B3E38A91AF298259DBAPR08MB5814eurp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi Yunjian,

   &= nbsp;            Tha= t’s interesting. Is it possible to elaborate the use case or possibly= provide the code snippet?

 

It is possible that= it is a synchronization problem due to relaxed memory model that Arm archi= tecture uses. There could be a barrier missing in the code.

 

Thanks,<= /span>

Honnappa=

 

From: = wangyunjian <wangyunjian@huawei.com>
Sent: Saturday, January 29, 2022 9:21 PM
To: dev@dpdk.org; users@dpdk.org
Cc: Feifei Wang <Feifei.Wang2@arm.com>; Ruifeng Wang <Ruife= ng.Wang@arm.com>; Huangshaozhang <huangshaozhang@huawei.com>; ding= xiaoxiong <dingxiaoxiong@huawei.com>
Subject: [dpdk-dev][dpdk-users] A problem about memory may not be al= l-zero allocated by rte_zmalloc_socket()

 =

Hi, all

&nbs= p;

There's a= problem that the memory are allocated by rte_zmalloc_socket()

may not b= e all-zero on the ARM platform.

&nbs= p;

However, = the x86 platform does not have this problem.

&nbs= p;

Any id= eas ?

&nbs= p;

Thanks= ,

Yunjia= n

&nbs= p;

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