From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id DF8DB959 for ; Wed, 30 Jul 2014 17:36:26 +0200 (CEST) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga101.fm.intel.com with ESMTP; 30 Jul 2014 08:36:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,764,1400050800"; d="scan'208";a="569500930" Received: from irsmsx101.ger.corp.intel.com ([163.33.3.153]) by fmsmga001.fm.intel.com with ESMTP; 30 Jul 2014 08:36:51 -0700 Received: from irsmsx110.ger.corp.intel.com (163.33.3.25) by IRSMSX101.ger.corp.intel.com (163.33.3.153) with Microsoft SMTP Server (TLS) id 14.3.123.3; Wed, 30 Jul 2014 16:36:50 +0100 Received: from irsmsx105.ger.corp.intel.com ([169.254.7.65]) by IRSMSX110.ger.corp.intel.com ([163.33.3.25]) with mapi id 14.03.0123.003; Wed, 30 Jul 2014 16:36:50 +0100 From: "Ananyev, Konstantin" To: Neil Horman , "dev@dpdk.org" Thread-Topic: [PATCH v2 0/2] dpdk: Allow for dynamic enablement of some isolated features Thread-Index: AQHPrAWl5l1OJQgoukKB6Oa2PFEqfJu4v5tA Date: Wed, 30 Jul 2014 15:36:50 +0000 Message-ID: <2601191342CEEE43887BDE71AB9772582134581E@IRSMSX105.ger.corp.intel.com> References: <1406665466-29654-1-git-send-email-nhorman@tuxdriver.com> <1406731769-18523-1-git-send-email-nhorman@tuxdriver.com> In-Reply-To: <1406731769-18523-1-git-send-email-nhorman@tuxdriver.com> Accept-Language: en-IE, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [163.33.239.182] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: Re: [dpdk-dev] [PATCH v2 0/2] dpdk: Allow for dynamic enablement of some isolated features X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2014 15:36:27 -0000 > -----Original Message----- > From: Neil Horman [mailto:nhorman@tuxdriver.com] > Sent: Wednesday, July 30, 2014 3:49 PM > To: dev@dpdk.org > Cc: Ananyev, Konstantin; Neil Horman; Thomas Monjalon > Subject: [PATCH v2 0/2] dpdk: Allow for dynamic enablement of some isolat= ed features >=20 > Hey all- > I've been trying to update the fedora dpdk package to support VFI= O > enabled drivers and ran into a problem in which ixgbe didn't compile beca= use the > rxtx_vec code uses sse4.2 instruction intrinsics, which aren't supported = in the > default config I have. I tried to remedy this by replacing the intrinsic= s with > the __builtin macros, but it was pointed out (correctly), that this doesn= 't work > properly. So this is my second attempt, which I actually like a bit bett= er. I > noted that code that uses intrinsics (ixgbe and the acl library), don't n= eed to > have those instructions turned on build-wide. Rather, we can just enable= the > instructions in the specific code we want to build with support for that,= and > test for instruction support dynamically at run time. This allows me to = build > the dpdk for a generic platform, but in such a way that some optimization= s can > be used if the executing cpu supports them at run time. >=20 > Change notes: >=20 > v2) > * Added Log messages to run time check failures per Konstantin > * Removed run time check caching in acl per Konstantin >=20 > Signed-off-by: Neil Horman > CC: Thomas Monjalon Acked-by: Konstantin Ananyev