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Wed, 23 Oct 2019 15:35:11 +0000 Received: from CY4PR1801MB1863.namprd18.prod.outlook.com ([fe80::d918:c54e:c3b1:3167]) by CY4PR1801MB1863.namprd18.prod.outlook.com ([fe80::d918:c54e:c3b1:3167%7]) with mapi id 15.20.2387.019; Wed, 23 Oct 2019 15:35:11 +0000 From: Pavan Nikhilesh Bhagavatula To: Aaron Conole CC: David Marchand , Jerin Jacob Kollanukkaran , Stephen Hemminger , dev , dpdk stable Thread-Topic: [dpdk-dev] [PATCH] eal/reciprocal: fix off by one when divisor is 32bit Thread-Index: AdWJt1aAXi+3JV0KQvWzEuDG/268Gw== Date: Wed, 23 Oct 2019 15:35:11 +0000 Message-ID: Accept-Language: en-IN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [122.171.232.163] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 4b77bdcb-5783-4e92-beca-08d757ce97af x-ms-traffictypediagnostic: CY4PR1801MB1909: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:9508; x-forefront-prvs: 019919A9E4 x-forefront-antispam-report: SFV:NSPM; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 4b77bdcb-5783-4e92-beca-08d757ce97af X-MS-Exchange-CrossTenant-originalarrivaltime: 23 Oct 2019 15:35:11.4632 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 70e1fb47-1155-421d-87fc-2e58f638b6e0 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: /GOo34XnMjYJvCshF5kJy6E+rmh8ifx7Bl3v+NXjizaq1SkzFrobsSVWaZPhVOer+FWt4t8PDXVYU95DhLD5NlPJ+spONKmgcQDXIeqE4ps= X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR1801MB1909 X-OriginatorOrg: marvell.com X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,1.0.8 definitions=2019-10-23_04:2019-10-23,2019-10-23 signatures=0 Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH] eal/reciprocal: fix off by one when divisor is 32bit X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" >Pavan Nikhilesh Bhagavatula writes: > >>>Pavan Nikhilesh Bhagavatula writes: >>> >>>>>> > >>>>>> >Any review? >>>>>> > >>>>>> >Are we missing an update in the unit test to catch this issue? >>>>>> >Thanks. >>>>>> >>>>>> We actually caught it in a unit test >>>>>> >test_reciprocal_division >>>>> >>>>>We had this problem since the very start then. >>>>> >>>>>Both reciprocal_division and reciprocal_division_perf are in the >>>"perf" >>>>>list. >>>>>Can they be promoted to the standard list? >>>> >>>> Both of these tests take >=3D5 min depending on the platform in use >>>which is why >>>> they are placed in perf tests. >>> >>>Is it possible to write a smaller set of tests that can be put in the >>>standard list? >>> >> >> Currently we have MAX_ITERATIONS (1ULL << 32) for both the tests >> maybe we can reduce it to 1 << 16 for the normal case? > >Sounds good to me. If you submit a patch, we can look at the run time >from the robot submission as well. > Yup, I'll send a patch. >>>>> >>>>> >>>>>-- >>>>>David Marchand