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From: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>
To: Neil Horman <nhorman@tuxdriver.com>, "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v2 0/2] dpdk: Allow for dynamic enablement of some isolated features
Date: Wed, 30 Jul 2014 15:36:50 +0000	[thread overview]
Message-ID: <2601191342CEEE43887BDE71AB9772582134581E@IRSMSX105.ger.corp.intel.com> (raw)
In-Reply-To: <1406731769-18523-1-git-send-email-nhorman@tuxdriver.com>

> -----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 isolated features
> 
> Hey all-
>         I've been trying to update the fedora dpdk package to support VFIO
> enabled drivers and ran into a problem in which ixgbe didn't compile because 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 intrinsics 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 better.  I
> noted that code that uses intrinsics (ixgbe and the acl library), don't need 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 optimizations can
> be used if the executing cpu supports them at run time.
> 
> Change notes:
> 
> v2)
> 	* Added Log messages to run time check failures per Konstantin
> 	* Removed run time check caching in acl per Konstantin
> 
> Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
> CC: Thomas Monjalon <thomas.monjalon@6wind.com>

Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

  parent reply	other threads:[~2014-07-30 15:36 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-29 20:24 [dpdk-dev] [PATCH " Neil Horman
2014-07-29 20:24 ` [dpdk-dev] [PATCH 1/2] ixgbe: test sse4.2 support at runtime for vectorized receive operations Neil Horman
2014-07-29 20:24 ` [dpdk-dev] [PATCH 2/2] acl: Preform dynamic sse4.2 support check Neil Horman
2014-07-30 12:07 ` [dpdk-dev] [PATCH 0/2] dpdk: Allow for dynamic enablement of some isolated features Ananyev, Konstantin
2014-07-30 13:01   ` Neil Horman
2014-07-30 13:44     ` Ananyev, Konstantin
2014-07-30 14:49 ` [dpdk-dev] [PATCH v2 " Neil Horman
2014-07-30 14:49   ` [dpdk-dev] [PATCH v2 1/2] ixgbe: test sse4.2 support at runtime for vectorized receive operations Neil Horman
2014-07-30 14:49   ` [dpdk-dev] [PATCH v2 2/2] acl: Preform dynamic sse4.2 support check Neil Horman
2014-07-30 15:36   ` Ananyev, Konstantin [this message]
2014-07-30 19:03   ` [dpdk-dev] [PATCH v2 0/2] dpdk: Allow for dynamic enablement of some isolated features Venky Venkatesan
2014-07-30 19:17     ` Neil Horman
2014-07-30 19:34     ` Neil Horman
2014-07-30 18:59 ` [dpdk-dev] [PATCH " Bruce Richardson
2014-07-30 19:28   ` Neil Horman
2014-07-30 21:09     ` Bruce Richardson
2014-07-31  9:30       ` Thomas Monjalon
2014-07-31 11:36       ` Ananyev, Konstantin
2014-07-31 13:13       ` Neil Horman
2014-07-31 13:26         ` Thomas Monjalon
2014-07-31 14:32           ` Neil Horman
2014-07-31 18:10             ` Neil Horman
2014-07-31 18:36               ` Bruce Richardson
2014-07-31 19:01                 ` Neil Horman
2014-07-31 20:19                   ` Bruce Richardson
2014-08-01 13:36                     ` Neil Horman
2014-08-01 13:56                       ` Ananyev, Konstantin
2014-08-01 14:26                         ` Venkatesan, Venky
2014-08-01 14:27                         ` Neil Horman
2014-07-31 19:58                 ` John W. Linville
2014-07-31 20:20                   ` Bruce Richardson
2014-07-31 20:32                     ` John W. Linville
2014-08-01  8:46                       ` Vincent JARDIN
2014-08-01 14:06                         ` Neil Horman
2014-08-01 14:57                           ` Vincent JARDIN
2014-08-01 15:19                             ` Neil Horman
2014-07-31 20:10                 ` Neil Horman
2014-07-31 20:25                   ` Bruce Richardson
2014-08-01 15:06                     ` Neil Horman
2014-08-01 19:22                       ` Bruce Richardson
2014-08-01 20:43                         ` Neil Horman
2014-08-01 21:08                           ` Bruce Richardson
2014-08-02 12:56                             ` Neil Horman
2014-07-31 21:53               ` Thomas Monjalon
2014-07-31 21:25             ` Thomas Monjalon

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