linux-kernel - [PATCH 3/4] ARM: multi_v7_defconfig: Enable s5p-secss driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-id: <1464846916-3110-3-git-send-email-k.kozlowski@samsung.com>
Date:	Thu, 02 Jun 2016 07:55:15 +0200
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Kukjin Kim <kgene@...nel.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Javier Martinez Canillas <javier@....samsung.com>,
	Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Kevin Hilman <khilman@...nel.org>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: [PATCH 3/4] ARM: multi_v7_defconfig: Enable s5p-secss driver

The Exynos SoC provides a Security SubSystem block for accelerating some
cryptographic operations.  Enable the driver for it - s5p-secss to
utilize the hardware acceleration.

Currently the s5p-secss driver supports AES in CBC and ECB modes.
However its usefulness could be doubted. Excerpt of tests on Odroid XU3
(Exynos5422), for 256 bit key, encryption, performance CPU freq governor:

  algorithm        | block size [b] | average speed [MB/s] |
  cbc-aes-s5p      |             16 |                 11.5 |
  cbc-aes-s5p      |             64 |                 25.4 |
  cbc-aes-s5p      |            256 |                 41.0 |
  cbc-aes-s5p      |           1024 |                 47.4 |
  cbc-aes-s5p      |           8192 |                 49.0 |
  cbc(aes-generic) |             16 |                  0.4 |
  cbc(aes-generic) |             64 |                  1.8 |
  cbc(aes-generic) |            256 |                  6.6 |
  cbc(aes-generic) |           1024 |                 25.2 |
  cbc(aes-generic) |           8192 |                 83.1 |

Anyway enable the driver so it will get some testing coverage by
community.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
---
 arch/arm/configs/multi_v7_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index 68cb3c766c39..ee7c884ab5d8 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -875,6 +875,7 @@ CONFIG_KEYSTONE_IRQ=y
 CONFIG_HW_RANDOM=y
 CONFIG_HW_RANDOM_ST=y
 CONFIG_CRYPTO_DEV_MARVELL_CESA=m
+CONFIG_CRYPTO_DEV_S5P=m
 CONFIG_CRYPTO_DEV_SUN4I_SS=m
 CONFIG_CRYPTO_DEV_ROCKCHIP=m
 CONFIG_ARM_CRYPTO=y
-- 
1.9.1