linux-kernel - [PATCH 026/128] KVM: selftests: Drop 'int' return from asserting *_has_device

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Date:   Wed,  4 May 2022 22:47:32 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Andrew Jones <drjones@...hat.com>,
        David Matlack <dmatlack@...gle.com>,
        Ben Gardon <bgardon@...gle.com>,
        Oliver Upton <oupton@...gle.com>,
        Sean Christopherson <seanjc@...gle.com>
Subject: [PATCH 026/128] KVM: selftests: Drop 'int' return from asserting *_has_device_attr()

Drop 'int' returns from *_device_has_attr() helpers that assert the
return is '0', there's no point in returning '0' and "requiring" the
caller to perform a redundant assertion.

Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 .../testing/selftests/kvm/aarch64/vgic_init.c |  4 ++--
 .../selftests/kvm/include/kvm_util_base.h     | 20 ++++++++++++++++---
 tools/testing/selftests/kvm/lib/kvm_util.c    | 17 ----------------
 3 files changed, 19 insertions(+), 22 deletions(-)

diff --git a/tools/testing/selftests/kvm/aarch64/vgic_init.c b/tools/testing/selftests/kvm/aarch64/vgic_init.c
index 223fef4c1f62..2425894b3775 100644
--- a/tools/testing/selftests/kvm/aarch64/vgic_init.c
+++ b/tools/testing/selftests/kvm/aarch64/vgic_init.c
@@ -201,8 +201,8 @@ static void subtest_v3_redist_regions(struct vm_gic *v)
 	uint64_t addr, expected_addr;
 	int ret;
 
-	ret = kvm_has_device_attr(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
-				     KVM_VGIC_V3_ADDR_TYPE_REDIST);
+	ret = __kvm_has_device_attr(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
+				    KVM_VGIC_V3_ADDR_TYPE_REDIST);
 	TEST_ASSERT(!ret, "Multiple redist regions advertised");
 
 	addr = REDIST_REGION_ATTR_ADDR(NR_VCPUS, 0x100000, 2, 0);
diff --git a/tools/testing/selftests/kvm/include/kvm_util_base.h b/tools/testing/selftests/kvm/include/kvm_util_base.h
index 66d896c8e19b..f9aeac540699 100644
--- a/tools/testing/selftests/kvm/include/kvm_util_base.h
+++ b/tools/testing/selftests/kvm/include/kvm_util_base.h
@@ -483,7 +483,14 @@ void *vcpu_map_dirty_ring(struct kvm_vm *vm, uint32_t vcpuid);
 void vcpu_args_set(struct kvm_vm *vm, uint32_t vcpuid, unsigned int num, ...);
 
 int __kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr);
-int kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr);
+
+static inline void kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr)
+{
+	int ret = __kvm_has_device_attr(dev_fd, group, attr);
+
+	TEST_ASSERT(!ret, "KVM_HAS_DEVICE_ATTR failed, rc: %i errno: %i", ret, errno);
+}
+
 int __kvm_test_create_device(struct kvm_vm *vm, uint64_t type);
 int __kvm_create_device(struct kvm_vm *vm, uint64_t type);
 int kvm_create_device(struct kvm_vm *vm, uint64_t type);
@@ -496,8 +503,15 @@ int _kvm_irq_line(struct kvm_vm *vm, uint32_t irq, int level);
 
 int __vcpu_has_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
 			  uint64_t attr);
-int vcpu_has_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
-			 uint64_t attr);
+
+static inline void vcpu_has_device_attr(struct kvm_vm *vm, uint32_t vcpuid,
+					uint32_t group, uint64_t attr)
+{
+	int ret = __vcpu_has_device_attr(vm, vcpuid, group, attr);
+
+	TEST_ASSERT(!ret, KVM_IOCTL_ERROR(KVM_HAS_DEVICE_ATTR, ret));
+}
+
 int _vcpu_access_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
 			  uint64_t attr, void *val, bool write);
 int vcpu_access_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index ca313dc8b37a..a7bc6b623871 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -1621,14 +1621,6 @@ int __kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr)
 	return ioctl(dev_fd, KVM_HAS_DEVICE_ATTR, &attribute);
 }
 
-int kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr)
-{
-	int ret = __kvm_has_device_attr(dev_fd, group, attr);
-
-	TEST_ASSERT(!ret, "KVM_HAS_DEVICE_ATTR failed, rc: %i errno: %i", ret, errno);
-	return ret;
-}
-
 int __kvm_test_create_device(struct kvm_vm *vm, uint64_t type)
 {
 	struct kvm_create_device create_dev = {
@@ -1694,15 +1686,6 @@ int __vcpu_has_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
 	return __kvm_has_device_attr(vcpu->fd, group, attr);
 }
 
-int vcpu_has_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
-				 uint64_t attr)
-{
-	int ret = __vcpu_has_device_attr(vm, vcpuid, group, attr);
-
-	TEST_ASSERT(!ret, "KVM_HAS_DEVICE_ATTR IOCTL failed, rc: %i errno: %i", ret, errno);
-	return ret;
-}
-
 int _vcpu_access_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
 			     uint64_t attr, void *val, bool write)
 {
-- 
2.36.0.464.gb9c8b46e94-goog