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Fri, 30 Oct 2020 10:16:41 +0000 Received: from SN6PR11MB3103.namprd11.prod.outlook.com ([fe80::e43b:59bb:161:8349]) by SN6PR11MB3103.namprd11.prod.outlook.com ([fe80::e43b:59bb:161:8349%3]) with mapi id 15.20.3499.029; Fri, 30 Oct 2020 10:16:41 +0000 From: "McDaniel, Timothy" To: Thomas Monjalon CC: "dev@dpdk.org" , "Carrillo, Erik G" , "Eads, Gage" , "Van Haaren, Harry" , "jerinj@marvell.com" , "david.marchand@redhat.com" Thread-Topic: [PATCH v5 00/23] Add DLB2 PMD Thread-Index: AQHWrqOyO/va3ZFfcUaVCyeZzLweQqmv7Kbg Date: Fri, 30 Oct 2020 10:16:41 +0000 Message-ID: References: <1602958879-8558-2-git-send-email-timothy.mcdaniel@intel.com> <1604051021-26699-1-git-send-email-timothy.mcdaniel@intel.com> <3010612.HaWdak5MLs@thomas> In-Reply-To: <3010612.HaWdak5MLs@thomas> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-reaction: no-action dlp-version: 11.5.1.3 authentication-results: monjalon.net; dkim=none (message not signed) header.d=none;monjalon.net; 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DIR:OUT; SFP:1102; x-ms-exchange-antispam-messagedata: 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SN6PR11MB3103.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 77afc5df-dfeb-4bd8-a0e6-08d87cbce539 X-MS-Exchange-CrossTenant-originalarrivaltime: 30 Oct 2020 10:16:41.3280 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 6lfGGw2s8obzHUIn1Cb3+DxDcJrARqQCOuEisteNPz3O/025jXI4Rb2ia0qC0vl083Oivxh0ZokUDWYR2SS4z9cnF8q1qOKOXj0kpZ1nGDc= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA2PR11MB5164 X-OriginatorOrg: intel.com Subject: Re: [dpdk-dev] [PATCH v5 00/23] Add DLB2 PMD X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Archived-At: List-Archive: > -----Original Message----- > From: Thomas Monjalon > Sent: Friday, October 30, 2020 5:02 AM > To: McDaniel, Timothy > Cc: dev@dpdk.org; Carrillo, Erik G ; Eads, Gag= e > ; Van Haaren, Harry ; > jerinj@marvell.com; david.marchand@redhat.com > Subject: Re: [PATCH v5 00/23] Add DLB2 PMD >=20 > 30/10/2020 10:43, Timothy McDaniel: > > - note that the code still uses its private byte-encoded versions of > > umonitor/umwait, rather than the new functions in the power > > patch that are built on top of those intrinsics. This is intentional. >=20 > Why? Now these intrinsics are available in the main branch. > We should avoid duplicating such code. >=20 >=20 I had asked that the low level intrinsics (UMWAIT/UMONITOR) be split out so= that DLB/DLB2 could use them instead of its own private byte-encoded versi= ons, but instead we have these wrappers that call the low level intrinsics.= Those wrappers introduce additional overhead that is not required for DLB/DLB2. I have a m= eeting with Ma Liang on Monday to discuss.