[PATCH] armv8: cache_v8: fix mmu_set_region_dcache_behaviour

[Peng Fan]

> Subject: [PATCH] armv8: cache_v8: fix mmu_set_region_dcache_behaviour

Any comments?

Thanks,
Peng.

> 
> enum dcache_option already shift left 2 bits, PMD_ATTRINDX(option), will
> wrongly shift left the attr 4bits, which is wrong. And make the region user set
> not has expected attribute and might affect the splitted block region.
> 
> Reviewed-by: Ye Li <ye.li at nxp.com>
> Signed-off-by: Peng Fan <peng.fan at nxp.com>
> ---
>  arch/arm/cpu/armv8/cache_v8.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/cpu/armv8/cache_v8.c
> b/arch/arm/cpu/armv8/cache_v8.c index 6a5518f9de..35ee5572e9 100644
> --- a/arch/arm/cpu/armv8/cache_v8.c
> +++ b/arch/arm/cpu/armv8/cache_v8.c
> @@ -555,7 +555,7 @@ static u64 set_one_region(u64 start, u64 size, u64
> attrs, bool flag, int level)  void
> mmu_set_region_dcache_behaviour(phys_addr_t start, size_t size,
>  				     enum dcache_option option)
>  {
> -	u64 attrs = PMD_ATTRINDX(option);
> +	u64 attrs = PMD_ATTRINDX(option >> 2);
>  	u64 real_start = start;
>  	u64 real_size = size;
> 
> --
> 2.16.4