Re: [Xen-devel] [PATCH RFC 1/7] xen: arm: Load xen under 4GB on 32-bit

[Julien Grall <julien.grall@xxxxxxxxxx>]

On 09/17/2013 02:40 AM, Ian Campbell wrote:
> We need to be able to use a 1:1 mapping during bring up.
> 
> Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Acked-by: Julien Grall <julien.grall@xxxxxxxxxx>
> ---
>  xen/arch/arm/setup.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c
> index 4b31623..d0220d9 100644
> --- a/xen/arch/arm/setup.c
> +++ b/xen/arch/arm/setup.c
> @@ -258,6 +258,14 @@ static paddr_t __init get_xen_paddr(void)
>              if ( !e )
>                  continue;
>  
> +#ifdef CONFIG_ARM_32
> +            /* Xen must be under 4GB */
> +            if ( e > 0x100000000ULL )
> +                e = 0x100000000ULL;
> +            if ( e < bank->start )
> +                continue;
> +#endif
> +
>              s = e - min_size;
>  
>              if ( s > paddr )
> 


-- 
Julien Grall

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