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From: Laura Abbott <lauraa@codeaurora.org>
To: Grant Likely <grant.likely@linaro.org>,
	Rob Herring <robh+dt@kernel.org>, Arnd Bergmann <arnd@arndb.de>
Cc: Laura Abbott <lauraa@codeaurora.org>,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Kumar Gala <galak@codeaurora.org>,
	Kees Cook <keescook@chromium.org>
Subject: [RFC/PATCH 2/3] arm: Add ARCH_WANT_OF_RANDOMNESS
Date: Tue, 11 Feb 2014 17:33:24 -0800	[thread overview]
Message-ID: <1392168805-14200-3-git-send-email-lauraa@codeaurora.org> (raw)
In-Reply-To: <1392168805-14200-1-git-send-email-lauraa@codeaurora.org>

The stack canary for ARM is currently the same across reboots
due to lack of randomness early enough. Add ARCH_WANT_OF_RANDOMNESS
to allow devices to add whatever randomness they need.

Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
---
 arch/arm/Kconfig              |    3 +++
 arch/arm/kernel/vmlinux.lds.S |    1 +
 2 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index e254198..7ab0db1 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -222,6 +222,9 @@ config NEED_RET_TO_USER
 config ARCH_MTD_XIP
 	bool
 
+config ARCH_WANT_OF_RANDOMNESS
+	def_bool n
+
 config VECTORS_BASE
 	hex
 	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 7bcee5c..2198258 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -202,6 +202,7 @@ SECTIONS
 		INIT_SETUP(16)
 		INIT_CALLS
 		CON_INITCALL
+		EARLY_RANDOM_FUNCS
 		SECURITY_INITCALL
 		INIT_RAM_FS
 	}
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation


WARNING: multiple messages have this Message-ID (diff)
From: lauraa@codeaurora.org (Laura Abbott)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC/PATCH 2/3] arm: Add ARCH_WANT_OF_RANDOMNESS
Date: Tue, 11 Feb 2014 17:33:24 -0800	[thread overview]
Message-ID: <1392168805-14200-3-git-send-email-lauraa@codeaurora.org> (raw)
In-Reply-To: <1392168805-14200-1-git-send-email-lauraa@codeaurora.org>

The stack canary for ARM is currently the same across reboots
due to lack of randomness early enough. Add ARCH_WANT_OF_RANDOMNESS
to allow devices to add whatever randomness they need.

Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
---
 arch/arm/Kconfig              |    3 +++
 arch/arm/kernel/vmlinux.lds.S |    1 +
 2 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index e254198..7ab0db1 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -222,6 +222,9 @@ config NEED_RET_TO_USER
 config ARCH_MTD_XIP
 	bool
 
+config ARCH_WANT_OF_RANDOMNESS
+	def_bool n
+
 config VECTORS_BASE
 	hex
 	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 7bcee5c..2198258 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -202,6 +202,7 @@ SECTIONS
 		INIT_SETUP(16)
 		INIT_CALLS
 		CON_INITCALL
+		EARLY_RANDOM_FUNCS
 		SECURITY_INITCALL
 		INIT_RAM_FS
 	}
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation

  parent reply	other threads:[~2014-02-12  1:33 UTC|newest]

Thread overview: 71+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-12  1:33 [RFC/PATCH 0/3] Add devicetree scanning for randomness Laura Abbott
2014-02-12  1:33 ` Laura Abbott
     [not found] ` < 201402121251.06280.arnd@arndb.de>
2014-02-12  1:33 ` [RFC/PATCH 1/3] of: Add early randomness hooks Laura Abbott
2014-02-12  1:33   ` Laura Abbott
2014-02-12 16:47   ` Grant Likely
2014-02-12 16:47     ` Grant Likely
2014-02-12 16:47     ` Grant Likely
2014-02-12  1:33 ` Laura Abbott [this message]
2014-02-12  1:33   ` [RFC/PATCH 2/3] arm: Add ARCH_WANT_OF_RANDOMNESS Laura Abbott
2014-02-12 16:49   ` Grant Likely
2014-02-12 16:49     ` Grant Likely
2014-02-12 16:49     ` Grant Likely
2014-02-13  0:54     ` Laura Abbott
2014-02-13  0:54       ` Laura Abbott
2014-02-13  0:54       ` Laura Abbott
2014-02-12  1:33 ` [RFC/PATCH 3/3] init: Move stack canary initialization after setup_arch Laura Abbott
2014-02-12  1:33   ` Laura Abbott
2014-02-12 11:51 ` [RFC/PATCH 0/3] Add devicetree scanning for randomness Arnd Bergmann
2014-02-12 11:51   ` Arnd Bergmann
2014-02-12 11:51   ` Arnd Bergmann
2014-02-12 17:45   ` Jason Cooper
2014-02-12 17:45     ` Jason Cooper
2014-02-12 17:45     ` Jason Cooper
2014-02-12 18:13     ` Olof Johansson
2014-02-12 18:13       ` Olof Johansson
2014-02-12 18:13       ` Olof Johansson
2014-02-12 18:32       ` Jason Cooper
2014-02-12 18:32         ` Jason Cooper
2014-02-12 18:32         ` Jason Cooper
2014-02-12 18:17     ` Arnd Bergmann
2014-02-12 18:17       ` Arnd Bergmann
2014-02-12 18:17       ` Arnd Bergmann
2014-02-12 18:45       ` Jason Cooper
2014-02-12 18:45         ` Jason Cooper
2014-02-12 18:45         ` Jason Cooper
2014-02-12 19:12         ` Arnd Bergmann
2014-02-12 19:12           ` Arnd Bergmann
2014-02-12 19:43           ` Jason Cooper
2014-02-12 19:43             ` Jason Cooper
2014-02-12 23:55           ` Rob Herring
2014-02-12 23:55             ` Rob Herring
2014-02-12 23:55             ` Rob Herring
2014-02-12 18:20     ` Jason Gunthorpe
2014-02-12 18:20       ` Jason Gunthorpe
2014-02-12 18:20       ` Jason Gunthorpe
2014-02-12 18:51       ` Jason Cooper
2014-02-12 18:51         ` Jason Cooper
2014-02-12 18:51         ` Jason Cooper
2014-02-17 15:54       ` Grant Likely
2014-02-17 15:54         ` Grant Likely
2014-02-17 16:13         ` Arnd Bergmann
2014-02-17 16:13           ` Arnd Bergmann
2014-02-17 16:13           ` Arnd Bergmann
2014-02-17 18:23           ` Jason Cooper
2014-02-17 18:23             ` Jason Cooper
2014-02-17 21:07             ` Geert Uytterhoeven
2014-02-17 21:07               ` Geert Uytterhoeven
2014-02-17 21:07               ` Geert Uytterhoeven
2014-02-18 17:56               ` Jason Cooper
2014-02-18 17:56                 ` Jason Cooper
2014-02-18 17:56                 ` Jason Cooper
2014-02-18  9:39           ` Grant Likely
2014-02-18  9:39             ` Grant Likely
2014-02-18  9:39             ` Grant Likely
2014-02-18 18:19         ` Jason Gunthorpe
2014-02-18 18:19           ` Jason Gunthorpe
2014-02-12 21:35     ` Kees Cook
2014-02-12 21:35       ` Kees Cook
2014-02-12 21:35       ` Kees Cook
2014-02-13  0:06   ` Laura Abbott
2014-02-13  0:06     ` Laura Abbott

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