From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AEED81E7640; Sat, 26 Apr 2025 06:51:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745650301; cv=none; b=Cdf89e8gFxXAt3NsuMqnyMhyUVNasVk1ipRGmMxPB5T8yfLpcAQTpUkUW+f6m5rpHsZGcTGEcUne1AEf0i9IgRRLQhTbxXJHNzTQaoiHhkf385LgMZuJljSnd8/KKAElN6A9HMYM28KqXafV+RoYQGbzc7E0/2l5ejyN1iTNNqs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745650301; c=relaxed/simple; bh=tT7xHizMSeBb7KvPb+oh3/Ig96zej6yrrgzCapsgU4A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=oYvZW1cIJ8DkXGw1Q7ywVb38mB2TR55K7KmxetIJ4nZhD8pcn9zEQf5puuc8x6mgaazmBH04mxZjQWK+dzr/ooxnhHzCxDG4GTfk+lfnQQmpq21beQ4sSc9LCHwqHk1ut30iT4ESZ6ITXDGIx/25qraLp2UPCjO1mlpVUXGvJuo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Lcsr7CT6; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Lcsr7CT6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BB467C4CEEB; Sat, 26 Apr 2025 06:51:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745650301; bh=tT7xHizMSeBb7KvPb+oh3/Ig96zej6yrrgzCapsgU4A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Lcsr7CT6H9XpOvDDW/C83SMoazZN1PRVMrqjz50cIA8jvmCUTp4hbSP/O3xWDYddd YZ0Ca/KBHzX6l/dLL8hxBuVetdDeZw6hpcDAZ35cOMN09OfSLYS0ycv+SBXsap2x9T nYa388Rpg9JgkkRno5+iBFIWegN8KKu5pmrB5RAANFCP2wNWIJ8cg4uo4UGSC1YmXX 3PyA35KurVu6MUW3T2QiEAViSJb9VVp4oVLGMgGOqouczpABo7xEpnV5PbcofFOcyJ SrKpi4wF6nF6wj1xAmeQyg10nxHDcqBjKLSEqqQyHj2PlfzO/+3AwSUvpeth2rtySI 75WbMMZSzlWhA== From: Eric Biggers To: linux-crypto@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, sparclinux@vger.kernel.org, linux-s390@vger.kernel.org, x86@kernel.org, Ard Biesheuvel , "Jason A . Donenfeld " , Linus Torvalds Subject: [PATCH 03/13] crypto: arm64/sha256 - remove obsolete chunking logic Date: Fri, 25 Apr 2025 23:50:29 -0700 Message-ID: <20250426065041.1551914-4-ebiggers@kernel.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250426065041.1551914-1-ebiggers@kernel.org> References: <20250426065041.1551914-1-ebiggers@kernel.org> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Eric Biggers Since kernel-mode NEON sections are now preemptible on arm64, there is no longer any need to limit the length of them. Signed-off-by: Eric Biggers --- arch/arm64/crypto/sha256-glue.c | 19 ++----------------- 1 file changed, 2 insertions(+), 17 deletions(-) diff --git a/arch/arm64/crypto/sha256-glue.c b/arch/arm64/crypto/sha256-glue.c index 26f9fdfae87bf..d63ea82e1374e 100644 --- a/arch/arm64/crypto/sha256-glue.c +++ b/arch/arm64/crypto/sha256-glue.c @@ -84,27 +84,12 @@ static struct shash_alg algs[] = { { } }; static int sha256_update_neon(struct shash_desc *desc, const u8 *data, unsigned int len) { - do { - unsigned int chunk = len; - - /* - * Don't hog the CPU for the entire time it takes to process all - * input when running on a preemptible kernel, but process the - * data block by block instead. - */ - if (IS_ENABLED(CONFIG_PREEMPTION)) - chunk = SHA256_BLOCK_SIZE; - - chunk -= sha256_base_do_update_blocks(desc, data, chunk, - sha256_neon_transform); - data += chunk; - len -= chunk; - } while (len >= SHA256_BLOCK_SIZE); - return len; + return sha256_base_do_update_blocks(desc, data, len, + sha256_neon_transform); } static int sha256_finup_neon(struct shash_desc *desc, const u8 *data, unsigned int len, u8 *out) { -- 2.49.0