From: Stefano Brivio <sbrivio@redhat.com>
To: Eric Biggers <ebiggers@kernel.org>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org,
linux-raid@vger.kernel.org, Christoph Hellwig <hch@infradead.org>,
linux-crypto@vger.kernel.org,
Herbert Xu <herbert@gondor.apana.org.au>,
Taehee Yoo <ap420073@gmail.com>,
netfilter-devel@vger.kernel.org,
Pablo Neira Ayuso <pablo@netfilter.org>,
Florian Westphal <fw@strlen.de>, Phil Sutter <phil@nwl.cc>,
stable@vger.kernel.org
Subject: Re: [PATCH 6/6] netfilter: nft_set_pipapo_avx2: add missing vzeroupper
Date: Mon, 17 Aug 2026 13:17:50 +0200 (CEST) [thread overview]
Message-ID: <20260817131749.6e1408bb@elisabeth> (raw)
In-Reply-To: <20260815205750.169336-7-ebiggers@kernel.org>
On Sat, 15 Aug 2026 13:57:50 -0700
Eric Biggers <ebiggers@kernel.org> wrote:
> Since pipapo_get_avx2() uses YMM registers, execute vzeroupper before
> returning from it. This is needed to avoid degrading the performance of
> any later SSE code that may happen to be executed.
>
> Fixes: 7400b063969b ("nft_set_pipapo: Introduce AVX2-based lookup implementation")
> Cc: stable@vger.kernel.org
> Cc: Florian Westphal <fw@strlen.de>
> Cc: Stefano Brivio <sbrivio@redhat.com>
> Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
--
Stefano
next prev parent reply other threads:[~2026-08-17 11:17 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-15 20:57 [PATCH 0/6] x86: add missing vzeroupper instructions Eric Biggers
2026-08-15 20:57 ` [PATCH 1/6] xor: add missing vzeroupper to AVX code Eric Biggers
2026-08-15 20:57 ` [PATCH 2/6] raid6: add missing vzeroupper to AVX2 code Eric Biggers
2026-08-15 21:07 ` sashiko-bot
2026-08-15 20:57 ` [PATCH 3/6] raid6: add missing vzeroupper to AVX-512 code Eric Biggers
2026-08-15 21:06 ` sashiko-bot
2026-08-15 20:57 ` [PATCH 4/6] crypto: x86/aria - add missing vzeroupper in AVX2 code Eric Biggers
2026-08-15 21:08 ` sashiko-bot
2026-08-15 20:57 ` [PATCH 5/6] crypto: x86/aria - add missing vzeroupper in AVX-512 code Eric Biggers
2026-08-15 20:57 ` [PATCH 6/6] netfilter: nft_set_pipapo_avx2: add missing vzeroupper Eric Biggers
2026-08-16 10:38 ` Stefano Brivio
2026-08-16 17:15 ` Eric Biggers
2026-08-17 11:17 ` Stefano Brivio
2026-08-17 11:17 ` Stefano Brivio [this message]
2026-08-16 15:14 ` [PATCH 0/6] x86: add missing vzeroupper instructions David Laight
2026-08-16 17:31 ` Eric Biggers
2026-08-17 9:15 ` Christoph Hellwig
2026-08-17 10:55 ` David Laight
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