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Re: [Qemu-devel] [kvm-unit-tests PATCH v4 08/11] libcflat: add IS_ALIGNE
From: |
Andre Przywara |
Subject: |
Re: [Qemu-devel] [kvm-unit-tests PATCH v4 08/11] libcflat: add IS_ALIGNED() macro, and page sizes |
Date: |
Wed, 9 Nov 2016 14:59:44 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 |
Hi,
On 08/11/16 20:21, Andrew Jones wrote:
> From: Peter Xu <address@hidden>
>
> These macros will be useful to do page alignment checks.
Reviewed-by: Andre Przywara <address@hidden>
Cheers,
Andre.
> Signed-off-by: Peter Xu <address@hidden>
> [drew: also added SZ_64K]
> Signed-off-by: Andrew Jones <address@hidden>
> ---
> lib/libcflat.h | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/lib/libcflat.h b/lib/libcflat.h
> index 82005f5d014f..143fc53061fe 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 (0x1000)
> +#define SZ_64K (0x10000)
> +#define SZ_2M (0x200000)
> +#define SZ_1G (0x40000000)
>
> typedef uint8_t u8;
> typedef int8_t s8;
>
- Re: [Qemu-devel] [kvm-unit-tests PATCH v4 03/11] arm/arm64: smp: support more than 8 cpus, (continued)
[Qemu-devel] [kvm-unit-tests PATCH v4 04/11] arm/arm64: add some delay routines, Andrew Jones, 2016/11/08
[Qemu-devel] [kvm-unit-tests PATCH v4 05/11] arm/arm64: irq enable/disable, Andrew Jones, 2016/11/08
[Qemu-devel] [kvm-unit-tests PATCH v4 06/11] arm/arm64: add initial gicv2 support, Andrew Jones, 2016/11/08
[Qemu-devel] [kvm-unit-tests PATCH v4 08/11] libcflat: add IS_ALIGNED() macro, and page sizes, Andrew Jones, 2016/11/08
[Qemu-devel] [kvm-unit-tests PATCH v4 07/11] arm/arm64: gicv2: add an IPI test, Andrew Jones, 2016/11/08
[Qemu-devel] [kvm-unit-tests PATCH v4 09/11] arm/arm64: add initial gicv3 support, Andrew Jones, 2016/11/08
[Qemu-devel] [kvm-unit-tests PATCH v4 10/11] arm/arm64: gicv3: add an IPI test, Andrew Jones, 2016/11/08