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From: "Rong, Leyi" <leyi.rong@intel.com>
To: Tal Shnaiderman <talshn@nvidia.com>,
	"Richardson, Bruce" <bruce.richardson@intel.com>
Cc: "david.marchand@redhat.com" <david.marchand@redhat.com>,
	"Zhang, Qi Z" <qi.z.zhang@intel.com>,
	"Yigit, Ferruh" <ferruh.yigit@intel.com>,
	NBU-Contact-Thomas Monjalon <thomas@monjalon.net>,
	"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-dev] [PATCH] net/i40e: disable AVX512 with MinGW
Date: Tue, 2 Feb 2021 14:31:35 +0000	[thread overview]
Message-ID: <BYAPR11MB2614FB3CF5B08177F4DCB457ECB59@BYAPR11MB2614.namprd11.prod.outlook.com> (raw)
In-Reply-To: <DM6PR12MB39451E504412B37B48EFFF5FA4B59@DM6PR12MB3945.namprd12.prod.outlook.com>


> -----Original Message-----
> From: Tal Shnaiderman <talshn@nvidia.com>
> Sent: Tuesday, February 2, 2021 10:14 PM
> To: Richardson, Bruce <bruce.richardson@intel.com>; 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>; NBU-Contact-Thomas Monjalon
> <thomas@monjalon.net>; 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: [PATCH] net/i40e: disable AVX512 with MinGW
> 
> > Subject: Re: [PATCH] net/i40e: disable AVX512 with MinGW
> >
> > External email: Use caution opening links or attachments
> >
> >
> > On Tue, Feb 02, 2021 at 05:06:39PM +0800, Leyi Rong wrote:
> > > Disable i40e AVX512 code path for Windows build regardless of CPU
> > > capability to avoid the MinGW build error:
> > >       Error: invalid register for .seh_savexmm
> > >
> > > Signed-off-by: Leyi Rong <leyi.rong@intel.com>
> > > ---
> > >  drivers/net/i40e/meson.build | 1 +
> > >  1 file changed, 1 insertion(+)
> > >
> > > diff --git a/drivers/net/i40e/meson.build
> > > b/drivers/net/i40e/meson.build index f5fc5a17e..26cd201ee 100644
> > > --- a/drivers/net/i40e/meson.build
> > > +++ b/drivers/net/i40e/meson.build
> > > @@ -56,6 +56,7 @@ if arch_subdir == 'x86'
> > >
> > >       if is_windows and cc.get_id() != 'clang'
> > >               i40e_avx512_cc_support = false
> > > +             i40e_avx512_cpu_support = false
> > >       endif
> > >
> >
> > This fix seems to imply that there is something else wrong in the
> > logic in the build file. If the compiler does not support avx512, the
> > fact that the CPU supports it should be completely irrelevant.
> > Therefore, I think a more correct fix (logically) should be to remove the
> "i40e_avx512_cpu_support"
> > from the next "if" condition, and only check the compiler support. We
> > don't do anything with the cpu support variable.
> 
> Moreover, this patch doesn't resolve the issue [1].
> 
>  [1]  http://mails.dpdk.org/archives/test-report/2021-February/177665.html
> 

[139/227] Compiling C object drivers/a715181@@tmp_rte_net_i40e@sta/net_i40e_i40e_rxtx_vec_avx2.c.obj.
FAILED: drivers/a715181@@tmp_rte_net_i40e@sta/net_i40e_i40e_rxtx_vec_avx2.c.obj 
gcc @drivers/a715181@@tmp_rte_net_i40e@sta/net_i40e_i40e_rxtx_vec_avx2.c.obj.rsp
{standard input}: Assembler messages:
{standard input}:2024: Error: invalid register for .seh_savexmm
{standard input}:2026: Error: invalid register for .seh_savexmm
{standard input}:2028: Error: invalid register for .seh_savexmm

Seems that avx2 file also causes the same issue, will send a new patch to have the test.

> >
> > /Bruce

  reply	other threads:[~2021-02-02 14:31 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-02  9:06 Leyi Rong
2021-02-02  9:30 ` Thomas Monjalon
2021-02-02 10:24 ` Bruce Richardson
2021-02-02 14:13   ` Tal Shnaiderman
2021-02-02 14:31     ` Rong, Leyi [this message]
2021-02-02 14:32 ` [dpdk-dev] [PATCH v2] net/i40e: fix avx code error on MinGW Leyi Rong
2021-02-02 23:07   ` Dmitry Kozlyuk
2021-02-04 10:41     ` Zhang, Qi Z
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           ` [dpdk-dev] [dpdk-ci] " Lincoln Lavoie

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