Re: [PATCH] nommu: Enable the strict alignment (CR_A) bit only ifARCH < v6

From: Nicolas Pitre
Date: Mon Dec 03 2012 - 11:51:15 EST


On Mon, 3 Dec 2012, Armando Visconti wrote:

> On 11/29/2012 12:04 PM, Armando VISCONTI wrote:
> > 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@xxxxxx>
> > ---
> > 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
>
> Any feedback on this simple patch?

Acked-by: Nicolas Pitre <nico@xxxxxxxxxx>


Nicolas
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