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[176.103.220.4]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4999d0876b8sm44870005e9.8.2026.08.17.04.17.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Aug 2026 04:17:51 -0700 (PDT) From: Stefano Brivio To: Eric Biggers Cc: x86@kernel.org, linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, Christoph Hellwig , linux-crypto@vger.kernel.org, Herbert Xu , Taehee Yoo , netfilter-devel@vger.kernel.org, Pablo Neira Ayuso , Florian Westphal , Phil Sutter , stable@vger.kernel.org Subject: Re: [PATCH 6/6] netfilter: nft_set_pipapo_avx2: add missing vzeroupper Message-ID: <20260817131749.6e1408bb@elisabeth> In-Reply-To: <20260815205750.169336-7-ebiggers@kernel.org> References: <20260815205750.169336-1-ebiggers@kernel.org> <20260815205750.169336-7-ebiggers@kernel.org> Organization: Red Hat X-Mailer: Claws Mail 4.2.0 (GTK 3.24.49; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-raid@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Date: Mon, 17 Aug 2026 13:17:50 +0200 (CEST) On Sat, 15 Aug 2026 13:57:50 -0700 Eric Biggers 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 > Cc: Stefano Brivio > Signed-off-by: Eric Biggers Reviewed-by: Stefano Brivio -- Stefano