From: David Marchand <david.marchand@redhat.com>
To: Bruce Richardson <bruce.richardson@intel.com>
Cc: Vladimir Medvedkin <vladimir.medvedkin@intel.com>,
dev <dev@dpdk.org>, Thomas Monjalon <thomas@monjalon.net>,
"Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
Lance Richardson <lance.richardson@broadcom.com>,
Ji@dpdk.org, Kai <kai.ji@intel.com>,
Yipeng Wang <yipeng1.wang@intel.com>,
Sameh Gobriel <sameh.gobriel@intel.com>
Subject: Re: [PATCH v2] hash: fix thash gfni implementation
Date: Tue, 16 Nov 2021 15:17:09 +0100 [thread overview]
Message-ID: <CAJFAV8w2N9MboN9sYZTf4EOGqjF2W0eTHV0Ej7w480CBWFYi9g@mail.gmail.com> (raw)
In-Reply-To: <YZO7z0JgzOfdHZnK@bricha3-MOBL.ger.corp.intel.com>
On Tue, Nov 16, 2021 at 3:10 PM Bruce Richardson
<bruce.richardson@intel.com> wrote:
>
> On Tue, Nov 16, 2021 at 02:53:49PM +0100, David Marchand wrote:
> > On Fri, Nov 12, 2021 at 3:17 PM Vladimir Medvedkin
> > <vladimir.medvedkin@intel.com> wrote:
> > >
> > > 1. This patch replaces _mm512_set_epi8 with _mm512_set_epi32
> > > due to the lack of support by some compilers.
> >
> > Ok, it was the initial report from Lance.
> >
> > > 2. This patch checks if AVX512F is supported along with GFNI.
> > > This is done if the code is built on a platform that supports GFNI,
> > > but does not support AVX512.
> >
> > Ok.
> >
> > > 3. Also this patch fixes compilation problems on 32bit arch due to
> > > lack of support for _mm_extract_epi64() by implementing XOR folding
> > > with _mm_extract_epi32() on 32-bit arch.
> >
> > This code is under a #if defined(__GFNI__) && defined(__AVX512F__).
> >
> > Does such a 32 bits processor exist, that supports AVX512 and GFNI?
> >
> The processor would be 64-bit but the code could well be 32-bit, and even
> then can still use these AVX512 instruction sets.
Oh, thanks for the explanation.
--
David Marchand
next prev parent reply other threads:[~2021-11-16 14:17 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-09 17:24 [dpdk-dev] [PATCH] " Vladimir Medvedkin
2021-11-09 17:34 ` Lance Richardson
2021-11-09 18:08 ` Ji, Kai
2021-11-12 14:17 ` [PATCH v2] " Vladimir Medvedkin
2021-11-16 13:53 ` David Marchand
2021-11-16 14:08 ` Walsh, Conor
2021-11-16 14:10 ` Bruce Richardson
2021-11-16 14:17 ` David Marchand [this message]
2021-11-16 14:18 ` Medvedkin, Vladimir
2021-11-16 14:33 ` [PATCH v3] " Vladimir Medvedkin
2021-11-17 9:20 ` David Marchand
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