From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Jones Subject: [PATCH kvm-unit-tests v8 07/10] libcflat: add IS_ALIGNED() macro, and page sizes Date: Thu, 8 Dec 2016 18:50:27 +0100 Message-ID: <20161208175030.12269-8-drjones@redhat.com> References: <20161208175030.12269-1-drjones@redhat.com> Cc: peter.maydell@linaro.org, marc.zyngier@arm.com, andre.przywara@arm.com, eric.auger@redhat.com, pbonzini@redhat.com, alex.bennee@linaro.org, christoffer.dall@linaro.org, Peter Xu To: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, qemu-devel@nongnu.org, qemu-arm@nongnu.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:46066 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752013AbcLHRuy (ORCPT ); Thu, 8 Dec 2016 12:50:54 -0500 In-Reply-To: <20161208175030.12269-1-drjones@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: From: Peter Xu These macros will be useful to do page alignment checks. Reviewed-by: Andre Przywara Reviewed-by: Eric Auger Signed-off-by: Peter Xu [drew: also added SZ_64K and changed to shifts] Signed-off-by: Andrew Jones --- 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 15dbcadc6c7a..e636705e12b3 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; -- 2.9.3