Re: [Qemu-devel] [kvm-unit-tests PATCH v6 08/11] libcflat: add IS_ALIGNED() macro, and page sizes

[Auger Eric]

Hi,
On 14/11/2016 22:08, Andrew Jones wrote:
> From: Peter Xu <address@hidden>
> 
> These macros will be useful to do page alignment checks.
> 
> Reviewed-by: Andre Przywara <address@hidden>
> Signed-off-by: Peter Xu <address@hidden>
> [drew: also added SZ_64K and changed to shifts]
> Signed-off-by: Andrew Jones <address@hidden>
> 
> ---
> v6: change to shifts [Alex]
> ---
>  lib/libcflat.h | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/lib/libcflat.h b/lib/libcflat.h
> index 82005f5d014f..244e40a724be 100644
> --- a/lib/libcflat.h
> +++ b/lib/libcflat.h
> @@ -33,6 +33,12 @@
>  #define __ALIGN_MASK(x, mask)        (((x) + (mask)) & ~(mask))
>  #define __ALIGN(x, a)                __ALIGN_MASK(x, (typeof(x))(a) - 1)
>  #define ALIGN(x, a)          __ALIGN((x), (a))
> +#define IS_ALIGNED(x, a)     (((x) & ((typeof(x))(a) - 1)) == 0)
> +
> +#define SZ_4K                        (1 << 12)
> +#define SZ_64K                       (1 << 16)
> +#define SZ_2M                        (1 << 21)
> +#define SZ_1G                        (1 << 30)
>  
>  typedef uint8_t              u8;
>  typedef int8_t               s8;
> 
Reviewed-by: Eric Auger <address@hidden>

Eric