Re: [Xen-devel] [PATCH 05/17] xen: arm32: resync atomics with (almost) v3.14-rc7

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi Ian,

On 03/20/2014 03:45 PM, Ian Campbell wrote:
> diff --git a/xen/include/asm-arm/arm32/atomic.h 
> b/xen/include/asm-arm/arm32/atomic.h
> index 3f024d4..d309f66 100644
> --- a/xen/include/asm-arm/arm32/atomic.h
> +++ b/xen/include/asm-arm/arm32/atomic.h
> @@ -21,6 +21,7 @@ static inline void atomic_add(int i, atomic_t *v)
>       unsigned long tmp;
>       int result;
>  
> +     prefetchw(&v->counter);

Xen on ARM doesn't provide prefetch* helper. Shall we implement it?

Regards,

-- 
Julien Grall

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