[PATCH 1/3] ARM: nommu: allow unaligned accesses on ARMv6+ processors

[Nicolas Pitre]

On Mon, 3 Dec 2012, Will Deacon wrote:

> Commit 8428e84d ("ARM: 7150/1: Allow kernel unaligned accesses on ARMv6+
> processors") unconditionally clears SCTLR.A for ARMv6+ processors, since
> newer toolchains assume that unaligned memory accesses will not fault
> for these cores.
> 
> This patch adds the corresponding change for nommu kernel builds.
> 
> Signed-off-by: Will Deacon <will.deacon at arm.com>
> ---
> 
> Identical to Armando's recent patch but included here for completeness.

For patches 1 to 3:

Acked-by: Nicolas Pitre <nico at linaro.org>

> 
>  arch/arm/kernel/head-nommu.S | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> 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
> -- 
> 1.8.0
> 
> 
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