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From: "Walsh, Conor" <conor.walsh@intel.com>
To: "Richardson, Bruce" <bruce.richardson@intel.com>,
	"dev@dpdk.org" <dev@dpdk.org>
Cc: "Liu, Yongxin" <yongxin.liu@windriver.com>,
	"stable@dpdk.org" <stable@dpdk.org>,
	"Laatz, Kevin" <kevin.laatz@intel.com>,
	Chengwen Feng <fengchengwen@huawei.com>
Subject: RE: [PATCH] dma/idxd: fix AVX2 code in non-datapath functions
Date: Mon, 20 Jun 2022 09:20:26 +0000	[thread overview]
Message-ID: <SA2PR11MB521067C14B9DCE6E23398AEEFFB09@SA2PR11MB5210.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20220617105920.354707-1-bruce.richardson@intel.com>

> While all systems which will use the idxd driver for hardware will
> support AVX2, if the driver is present the initialization functions e.g.
> to register logs, will be called on all systems - irrespective of HW
> support. This can cause issues if the system running DPDK does not have
> AVX2, and the compiler has included AVX instructions in the
> initialization code.
> 
> To fix this, remove AVX2 instruction set from the whole build of the
> driver. Instead, we add "target(avx2)" attribute to all datapath
> functions, so those - and only those functions - will having AVX2
> instructions in them.
> 
> Bugzilla ID: 1038
> Fixes: 3d36a0a1c7de ("dma/idxd: add data path job submission")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> ---

Acked-by: Conor Walsh <conor.walsh@intel.com>

  reply	other threads:[~2022-06-20  9:20 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-17 10:59 Bruce Richardson
2022-06-20  9:20 ` Walsh, Conor [this message]
2022-06-21 16:21   ` Thomas Monjalon

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