linux-kernel - [PATCH] nommu: Enable the strict alignment (CR

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Date:	Thu, 29 Nov 2012 12:04:02 +0100
From:	Armando Visconti <armando.visconti@...com>
To:	<armando.visconti@...com>, <linux@....linux.org.uk>
Cc:	<hsweeten@...ionengravers.com>, <swarren@...dia.com>,
	<nico@...aro.org>, <kgene.kim@...sung.com>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <spear-devel@...t.st.com>
Subject: [PATCH] nommu: Enable the strict alignment (CR_A) bit only if ARCH < v6

This patch keeps disabled the strict alignment CP15 bit for
all armv6 and armv7 processor without the mmu. This behaviour
is now same as in the mmu case.

Signed-off-by: Armando Visconti <armando.visconti@...com>
---
 arch/arm/kernel/head-nommu.S |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S
index 278cfc1..2c228a0 100644
--- a/arch/arm/kernel/head-nommu.S
+++ b/arch/arm/kernel/head-nommu.S
@@ -68,7 +68,7 @@ __after_proc_init:
 	 * CP15 system control register value returned in r0 from
 	 * the CPU init function.
 	 */
-#ifdef CONFIG_ALIGNMENT_TRAP
+#if defined(CONFIG_ALIGNMENT_TRAP) && __LINUX_ARM_ARCH__ < 6
 	orr	r0, r0, #CR_A
 #else
 	bic	r0, r0, #CR_A
-- 
1.7.4.4

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