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| author | Catalin Marinas <catalin.marinas@arm.com> | 2011-11-07 18:05:53 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-11-08 18:25:04 +0000 |
| commit | 8428e84d42179c2a00f5f6450866e70d802d1d05 (patch) | |
| tree | f6d316f13665e51f4cb27ea13c5e4f5dcd259690 /arch | |
| parent | 71e63e748ee6f4bad482b8021386eeb74f6e47f1 (diff) | |
| download | linux-8428e84d42179c2a00f5f6450866e70d802d1d05.tar.gz linux-8428e84d42179c2a00f5f6450866e70d802d1d05.tar.bz2 linux-8428e84d42179c2a00f5f6450866e70d802d1d05.zip | |
ARM: 7150/1: Allow kernel unaligned accesses on ARMv6+ processors
Recent gcc versions generate unaligned accesses by default on ARMv6 and
later processors. This patch ensures that the SCTLR.A bit is always
cleared on such processors to avoid kernel traping before
alignment_init() is called.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: John Linn <John.Linn@xilinx.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/kernel/head.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index 566c54c2a1fe..08c82fd844a8 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -360,7 +360,7 @@ __secondary_data: * r13 = *virtual* address to jump to upon completion */ __enable_mmu: -#ifdef CONFIG_ALIGNMENT_TRAP +#if defined(CONFIG_ALIGNMENT_TRAP) && __LINUX_ARM_ARCH__ < 6 orr r0, r0, #CR_A #else bic r0, r0, #CR_A |