From: "Zhang, Qi Z" <qi.z.zhang@intel.com>
To: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>,
"Rong, Leyi" <leyi.rong@intel.com>
Cc: "david.marchand@redhat.com" <david.marchand@redhat.com>,
"Yigit, Ferruh" <ferruh.yigit@intel.com>,
"thomas@monjalon.net" <thomas@monjalon.net>,
"Richardson, Bruce" <bruce.richardson@intel.com>,
"talshn@nvidia.com" <talshn@nvidia.com>,
"Kadam, Pallavi" <pallavi.kadam@intel.com>,
"Menon, Ranjit" <ranjit.menon@intel.com>,
"Xing, Beilei" <beilei.xing@intel.com>,
"aconole@redhat.com" <aconole@redhat.com>,
"dev@dpdk.org" <dev@dpdk.org>, "ci@dpdk.org" <ci@dpdk.org>
Subject: Re: [dpdk-ci] [dpdk-dev] [PATCH v2] net/i40e: fix avx code error on MinGW
Date: Thu, 4 Feb 2021 10:41:56 +0000 [thread overview]
Message-ID: <5ec7623cbb604753bb70fa9f4b0a7c3a@intel.com> (raw)
In-Reply-To: <20210203020758.12cd8089@sovereign>
> -----Original Message-----
> From: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
> Sent: Wednesday, February 3, 2021 7:08 AM
> To: Rong, Leyi <leyi.rong@intel.com>
> Cc: david.marchand@redhat.com; Zhang, Qi Z <qi.z.zhang@intel.com>; Yigit,
> Ferruh <ferruh.yigit@intel.com>; thomas@monjalon.net; Richardson, Bruce
> <bruce.richardson@intel.com>; talshn@nvidia.com; Kadam, Pallavi
> <pallavi.kadam@intel.com>; Menon, Ranjit <ranjit.menon@intel.com>; Xing,
> Beilei <beilei.xing@intel.com>; aconole@redhat.com; dev@dpdk.org;
> ci@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v2] net/i40e: fix avx code error on MinGW
>
> On Tue, 2 Feb 2021 22:32:58 +0800, Leyi Rong wrote:
> > Adds extra cflags '-fno-asynchronous-unwind-tables'
> > to avoid the MinGW build error:
> > Error: invalid register for .seh_savexmm
> >
> > Fixes: 5c38c33f7880 ("net/i40e: disable AVX512 with MinGW")
> >
> > Signed-off-by: Leyi Rong <leyi.rong@intel.com>
>
> Tested-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
>
> Re: -fno-asynchronous-unwind-tables, when cross-compiling from Linux, I
> observe bit-to-bit identical i40e_rxtx_vec_avx512.c.obj. My guess it that this
> option somehow affects GCC inlining heuristics. Similar issue existed in
> librte_acl (at least a year ago win GCC 6, I believe), where GCC generated
> incorrect code unless certain functions had been inlined (caught by test app).
> No an AVX expert, just my 2c.
Applied to dpdk-next-net-intel.
Thanks
Qi
next prev parent reply other threads:[~2021-02-04 10:42 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-02 9:06 [dpdk-ci] [PATCH] net/i40e: disable AVX512 with MinGW Leyi Rong
2021-02-02 10:24 ` Bruce Richardson
2021-02-02 14:13 ` Tal Shnaiderman
2021-02-02 14:31 ` Rong, Leyi
2021-02-02 14:32 ` [dpdk-ci] [PATCH v2] net/i40e: fix avx code error on MinGW Leyi Rong
2021-02-02 23:07 ` [dpdk-ci] [dpdk-dev] " Dmitry Kozlyuk
2021-02-04 10:41 ` Zhang, Qi Z [this message]
2021-02-04 12:36 ` Ferruh Yigit
2021-02-04 12:59 ` Thomas Monjalon
2021-02-04 13:43 ` David Marchand
2021-02-04 21:57 ` Lincoln Lavoie
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