arm64: defconfig: disable plain NEON implementation of AES

Message ID	1465829842-3668-1-git-send-email-ard.biesheuvel@linaro.org
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Headers	show Delivered-To: patch@linaro.org Received-SPF: pass (google.com: best guess record for domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) client-ip=2001:1868:205::9; From: Ard Biesheuvel <ard.biesheuvel@linaro.org> To: linux-arm-kernel@lists.infradead.org, arnd@arndb.de Subject: [PATCH] arm64: defconfig: disable plain NEON implementation of AES Date: Mon, 13 Jun 2016 16:57:22 +0200 Message-Id: <1465829842-3668-1-git-send-email-ard.biesheuvel@linaro.org> summary: Content analysis details: (-2.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [2a00:1450:400c:c09:0:0:0:22c listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid Precedence: list Cc: catalin.marinas@arm.com, arm@kernel.org, Ard Biesheuvel <ard.biesheuvel@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org

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1465829842-3668-1-git-send-email-ard.biesheuvel@linaro.org

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16740e7f89fb74253b5897a7525c68becee65beb

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From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
To: linux-arm-kernel@lists.infradead.org,
	arnd@arndb.de
Subject: [PATCH] arm64: defconfig: disable plain NEON implementation of AES
Date: Mon, 13 Jun 2016 16:57:22 +0200
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	Ard Biesheuvel <ard.biesheuvel@linaro.org>
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Commit Message

Ard Biesheuvel June 13, 2016, 2:57 p.m. UTC

The plain NEON implementation of AES is only suited for v8 cores that lack
the ARMv8 Crypto Extensions but have an implementation of the NEON tbl/tbx
instruction that is not pathetically slow. Unfortunately, this is currently
the empty set, so there is no point in including this implementation by
default. So disable it.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

---
 arch/arm64/configs/defconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
1.9.1


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diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index fd2d74d0491e..ab76f74e859b 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -343,5 +343,5 @@  CONFIG_CRYPTO_SHA2_ARM64_CE=y
 CONFIG_CRYPTO_GHASH_ARM64_CE=y
 CONFIG_CRYPTO_AES_ARM64_CE_CCM=y
 CONFIG_CRYPTO_AES_ARM64_CE_BLK=y
-CONFIG_CRYPTO_AES_ARM64_NEON_BLK=y
+# CONFIG_CRYPTO_AES_ARM64_NEON_BLK is not set
 CONFIG_CRYPTO_CRC32_ARM64=y

arm64: defconfig: disable plain NEON implementation of AES

Commit Message

Patch