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Date:   Mon,  5 Dec 2022 23:23:38 +0000
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Subject: [V2 PATCH 3/6] KVM: selftests: x86: Add IS_ALIGNED/IS_PAGE_ALIGNED helpers
From:   Vishal Annapurve <vannapurve@google.com>
To:     x86@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-kselftest@vger.kernel.org
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        Vishal Annapurve <vannapurve@google.com>
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Precedence: bulk

Add IS_ALIGNED/IS_PAGE_ALIGNED helpers for selftests.

Signed-off-by: Vishal Annapurve <vannapurve@google.com>
---
 tools/testing/selftests/kvm/include/kvm_util_base.h    | 3 +++
 tools/testing/selftests/kvm/include/x86_64/processor.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/tools/testing/selftests/kvm/include/kvm_util_base.h b/tools/testing/selftests/kvm/include/kvm_util_base.h
index 4ad99f295f2a..7ba32471df50 100644
--- a/tools/testing/selftests/kvm/include/kvm_util_base.h
+++ b/tools/testing/selftests/kvm/include/kvm_util_base.h
@@ -170,6 +170,9 @@ extern enum vm_guest_mode vm_mode_default;
 #define MIN_PAGE_SIZE		(1U << MIN_PAGE_SHIFT)
 #define PTES_PER_MIN_PAGE	ptes_per_page(MIN_PAGE_SIZE)
 
+/* @a is a power of 2 value */
+#define IS_ALIGNED(x, a)		(((x) & ((typeof(x))(a) - 1)) == 0)
+
 struct vm_guest_mode_params {
 	unsigned int pa_bits;
 	unsigned int va_bits;
diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h
index 5d310abe6c3f..4d5dd9a467e1 100644
--- a/tools/testing/selftests/kvm/include/x86_64/processor.h
+++ b/tools/testing/selftests/kvm/include/x86_64/processor.h
@@ -279,6 +279,7 @@ static inline unsigned int x86_model(unsigned int eax)
 #define PAGE_SHIFT		12
 #define PAGE_SIZE		(1ULL << PAGE_SHIFT)
 #define PAGE_MASK		(~(PAGE_SIZE-1) & PHYSICAL_PAGE_MASK)
+#define IS_PAGE_ALIGNED(x)	IS_ALIGNED(x, PAGE_SIZE)
 
 #define HUGEPAGE_SHIFT(x)	(PAGE_SHIFT + (((x) - 1) * 9))
 #define HUGEPAGE_SIZE(x)	(1UL << HUGEPAGE_SHIFT(x))
-- 
2.39.0.rc0.267.gcb52ba06e7-goog