diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h
index 22e2eaf42360..b9b3a19895aa 100644
--- a/tools/testing/selftests/kvm/include/x86_64/processor.h
+++ b/tools/testing/selftests/kvm/include/x86_64/processor.h
@@ -727,15 +727,6 @@ uint64_t vm_get_page_table_entry(struct kvm_vm *vm, struct kvm_vcpu *vcpu,
 void vm_set_page_table_entry(struct kvm_vm *vm, struct kvm_vcpu *vcpu,
 			     uint64_t vaddr, uint64_t pte);
 
-/*
- * set_cpuid() - overwrites a matching cpuid entry with the provided value.
- *		 matches based on ent->function && ent->index. returns true
- *		 if a match was found and successfully overwritten.
- * @cpuid: the kvm cpuid list to modify.
- * @ent: cpuid entry to insert
- */
-bool set_cpuid(struct kvm_cpuid2 *cpuid, struct kvm_cpuid_entry2 *ent);
-
 uint64_t kvm_hypercall(uint64_t nr, uint64_t a0, uint64_t a1, uint64_t a2,
 		       uint64_t a3);
 
diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c
index 69239b3613f7..1812b14de3dd 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/processor.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c
@@ -1208,24 +1208,6 @@ struct kvm_cpuid_entry2 *get_cpuid_entry(struct kvm_cpuid2 *cpuid,
 	return NULL;
 }
 
-bool set_cpuid(struct kvm_cpuid2 *cpuid,
-	       struct kvm_cpuid_entry2 *ent)
-{
-	int i;
-
-	for (i = 0; i < cpuid->nent; i++) {
-		struct kvm_cpuid_entry2 *cur = &cpuid->entries[i];
-
-		if (cur->function != ent->function || cur->index != ent->index)
-			continue;
-
-		memcpy(cur, ent, sizeof(struct kvm_cpuid_entry2));
-		return true;
-	}
-
-	return false;
-}
-
 uint64_t kvm_hypercall(uint64_t nr, uint64_t a0, uint64_t a1, uint64_t a2,
 		       uint64_t a3)
 {
diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_features.c b/tools/testing/selftests/kvm/x86_64/hyperv_features.c
index f08f51bad68b..3d0df079496b 100644
--- a/tools/testing/selftests/kvm/x86_64/hyperv_features.c
+++ b/tools/testing/selftests/kvm/x86_64/hyperv_features.c
@@ -150,37 +150,28 @@ static void guest_hcall(vm_vaddr_t pgs_gpa, struct hcall_data *hcall)
 	GUEST_DONE();
 }
 
-static void hv_set_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid,
-			 struct kvm_cpuid_entry2 *feat,
-			 struct kvm_cpuid_entry2 *recomm,
-			 struct kvm_cpuid_entry2 *dbg)
+static void vcpu_reset_hv_cpuid(struct kvm_vcpu *vcpu)
 {
-	TEST_ASSERT(set_cpuid(cpuid, feat),
-		    "failed to set KVM_CPUID_FEATURES leaf");
-	TEST_ASSERT(set_cpuid(cpuid, recomm),
-		    "failed to set HYPERV_CPUID_ENLIGHTMENT_INFO leaf");
-	TEST_ASSERT(set_cpuid(cpuid, dbg),
-		    "failed to set HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES leaf");
-	vcpu_init_cpuid(vcpu, cpuid);
+	/*
+	 * Enable all supported Hyper-V features, then clear the leafs holding
+	 * the features that will be tested one by one.
+	 */
+	vcpu_set_hv_cpuid(vcpu);
+
+	vcpu_clear_cpuid_entry(vcpu, HYPERV_CPUID_FEATURES);
+	vcpu_clear_cpuid_entry(vcpu, HYPERV_CPUID_ENLIGHTMENT_INFO);
+	vcpu_clear_cpuid_entry(vcpu, HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES);
 }
 
 static void guest_test_msrs_access(void)
 {
+	struct kvm_cpuid2 *prev_cpuid = NULL;
+	struct kvm_cpuid_entry2 *feat, *dbg;
 	struct kvm_vcpu *vcpu;
 	struct kvm_run *run;
 	struct kvm_vm *vm;
 	struct ucall uc;
 	int stage = 0;
-	struct kvm_cpuid_entry2 feat = {
-		.function = HYPERV_CPUID_FEATURES
-	};
-	struct kvm_cpuid_entry2 recomm = {
-		.function = HYPERV_CPUID_ENLIGHTMENT_INFO
-	};
-	struct kvm_cpuid_entry2 dbg = {
-		.function = HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES
-	};
-	struct kvm_cpuid2 *best;
 	vm_vaddr_t msr_gva;
 	struct msr_data *msr;
 
@@ -194,9 +185,16 @@ static void guest_test_msrs_access(void)
 		vcpu_args_set(vcpu, 1, msr_gva);
 		vcpu_enable_cap(vcpu, KVM_CAP_HYPERV_ENFORCE_CPUID, 1);
 
-		vcpu_set_hv_cpuid(vcpu);
+		if (!prev_cpuid) {
+			vcpu_reset_hv_cpuid(vcpu);
 
-		best = kvm_get_supported_hv_cpuid();
+			prev_cpuid = allocate_kvm_cpuid2(vcpu->cpuid->nent);
+		} else {
+			vcpu_init_cpuid(vcpu, prev_cpuid);
+		}
+
+		feat = vcpu_get_cpuid_entry(vcpu, HYPERV_CPUID_FEATURES);
+		dbg = vcpu_get_cpuid_entry(vcpu, HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES);
 
 		vm_init_descriptor_tables(vm);
 		vcpu_init_descriptor_tables(vcpu);
@@ -219,7 +217,7 @@ static void guest_test_msrs_access(void)
 			msr->available = 0;
 			break;
 		case 2:
-			feat.eax |= HV_MSR_HYPERCALL_AVAILABLE;
+			feat->eax |= HV_MSR_HYPERCALL_AVAILABLE;
 			/*
 			 * HV_X64_MSR_GUEST_OS_ID has to be written first to make
 			 * HV_X64_MSR_HYPERCALL available.
@@ -246,7 +244,7 @@ static void guest_test_msrs_access(void)
 			msr->available = 0;
 			break;
 		case 6:
-			feat.eax |= HV_MSR_VP_RUNTIME_AVAILABLE;
+			feat->eax |= HV_MSR_VP_RUNTIME_AVAILABLE;
 			msr->write = 0;
 			msr->available = 1;
 			break;
@@ -263,7 +261,7 @@ static void guest_test_msrs_access(void)
 			msr->available = 0;
 			break;
 		case 9:
-			feat.eax |= HV_MSR_TIME_REF_COUNT_AVAILABLE;
+			feat->eax |= HV_MSR_TIME_REF_COUNT_AVAILABLE;
 			msr->write = 0;
 			msr->available = 1;
 			break;
@@ -280,7 +278,7 @@ static void guest_test_msrs_access(void)
 			msr->available = 0;
 			break;
 		case 12:
-			feat.eax |= HV_MSR_VP_INDEX_AVAILABLE;
+			feat->eax |= HV_MSR_VP_INDEX_AVAILABLE;
 			msr->write = 0;
 			msr->available = 1;
 			break;
@@ -297,7 +295,7 @@ static void guest_test_msrs_access(void)
 			msr->available = 0;
 			break;
 		case 15:
-			feat.eax |= HV_MSR_RESET_AVAILABLE;
+			feat->eax |= HV_MSR_RESET_AVAILABLE;
 			msr->write = 0;
 			msr->available = 1;
 			break;
@@ -313,7 +311,7 @@ static void guest_test_msrs_access(void)
 			msr->available = 0;
 			break;
 		case 18:
-			feat.eax |= HV_MSR_REFERENCE_TSC_AVAILABLE;
+			feat->eax |= HV_MSR_REFERENCE_TSC_AVAILABLE;
 			msr->write = 0;
 			msr->available = 1;
 			break;
@@ -336,7 +334,7 @@ static void guest_test_msrs_access(void)
 			vcpu_enable_cap(vcpu, KVM_CAP_HYPERV_SYNIC2, 0);
 			break;
 		case 22:
-			feat.eax |= HV_MSR_SYNIC_AVAILABLE;
+			feat->eax |= HV_MSR_SYNIC_AVAILABLE;
 			msr->write = 0;
 			msr->available = 1;
 			break;
@@ -352,7 +350,7 @@ static void guest_test_msrs_access(void)
 			msr->available = 0;
 			break;
 		case 25:
-			feat.eax |= HV_MSR_SYNTIMER_AVAILABLE;
+			feat->eax |= HV_MSR_SYNTIMER_AVAILABLE;
 			msr->write = 0;
 			msr->available = 1;
 			break;
@@ -368,7 +366,7 @@ static void guest_test_msrs_access(void)
 			msr->available = 0;
 			break;
 		case 28:
-			feat.edx |= HV_STIMER_DIRECT_MODE_AVAILABLE;
+			feat->edx |= HV_STIMER_DIRECT_MODE_AVAILABLE;
 			msr->available = 1;
 			break;
 
@@ -378,7 +376,7 @@ static void guest_test_msrs_access(void)
 			msr->available = 0;
 			break;
 		case 30:
-			feat.eax |= HV_MSR_APIC_ACCESS_AVAILABLE;
+			feat->eax |= HV_MSR_APIC_ACCESS_AVAILABLE;
 			msr->write = 1;
 			msr->write_val = 1;
 			msr->available = 1;
@@ -390,7 +388,7 @@ static void guest_test_msrs_access(void)
 			msr->available = 0;
 			break;
 		case 32:
-			feat.eax |= HV_ACCESS_FREQUENCY_MSRS;
+			feat->eax |= HV_ACCESS_FREQUENCY_MSRS;
 			msr->write = 0;
 			msr->available = 1;
 			break;
@@ -407,7 +405,7 @@ static void guest_test_msrs_access(void)
 			msr->available = 0;
 			break;
 		case 35:
-			feat.eax |= HV_ACCESS_REENLIGHTENMENT;
+			feat->eax |= HV_ACCESS_REENLIGHTENMENT;
 			msr->write = 0;
 			msr->available = 1;
 			break;
@@ -430,7 +428,7 @@ static void guest_test_msrs_access(void)
 			msr->available = 0;
 			break;
 		case 39:
-			feat.edx |= HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE;
+			feat->edx |= HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE;
 			msr->write = 0;
 			msr->available = 1;
 			break;
@@ -446,8 +444,8 @@ static void guest_test_msrs_access(void)
 			msr->available = 0;
 			break;
 		case 42:
-			feat.edx |= HV_FEATURE_DEBUG_MSRS_AVAILABLE;
-			dbg.eax |= HV_X64_SYNDBG_CAP_ALLOW_KERNEL_DEBUGGING;
+			feat->edx |= HV_FEATURE_DEBUG_MSRS_AVAILABLE;
+			dbg->eax |= HV_X64_SYNDBG_CAP_ALLOW_KERNEL_DEBUGGING;
 			msr->write = 0;
 			msr->available = 1;
 			break;
@@ -463,7 +461,9 @@ static void guest_test_msrs_access(void)
 			break;
 		}
 
-		hv_set_cpuid(vcpu, best, &feat, &recomm, &dbg);
+		vcpu_set_cpuid(vcpu);
+
+		memcpy(prev_cpuid, vcpu->cpuid, kvm_cpuid2_size(vcpu->cpuid->nent));
 
 		if (msr->idx)
 			pr_debug("Stage %d: testing msr: 0x%x for %s\n", stage,
@@ -497,24 +497,15 @@ static void guest_test_msrs_access(void)
 
 static void guest_test_hcalls_access(void)
 {
+	struct kvm_cpuid_entry2 *feat, *recomm, *dbg;
+	struct kvm_cpuid2 *prev_cpuid = NULL;
 	struct kvm_vcpu *vcpu;
 	struct kvm_run *run;
 	struct kvm_vm *vm;
 	struct ucall uc;
 	int stage = 0;
-	struct kvm_cpuid_entry2 feat = {
-		.function = HYPERV_CPUID_FEATURES,
-		.eax = HV_MSR_HYPERCALL_AVAILABLE
-	};
-	struct kvm_cpuid_entry2 recomm = {
-		.function = HYPERV_CPUID_ENLIGHTMENT_INFO
-	};
-	struct kvm_cpuid_entry2 dbg = {
-		.function = HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES
-	};
 	vm_vaddr_t hcall_page, hcall_params;
 	struct hcall_data *hcall;
-	struct kvm_cpuid2 *best;
 
 	while (true) {
 		vm = vm_create_with_one_vcpu(&vcpu, guest_hcall);
@@ -534,14 +525,23 @@ static void guest_test_hcalls_access(void)
 		vcpu_args_set(vcpu, 2, addr_gva2gpa(vm, hcall_page), hcall_params);
 		vcpu_enable_cap(vcpu, KVM_CAP_HYPERV_ENFORCE_CPUID, 1);
 
-		vcpu_set_hv_cpuid(vcpu);
+		if (!prev_cpuid) {
+			vcpu_reset_hv_cpuid(vcpu);
 
-		best = kvm_get_supported_hv_cpuid();
+			prev_cpuid = allocate_kvm_cpuid2(vcpu->cpuid->nent);
+		} else {
+			vcpu_init_cpuid(vcpu, prev_cpuid);
+		}
+
+		feat = vcpu_get_cpuid_entry(vcpu, HYPERV_CPUID_FEATURES);
+		recomm = vcpu_get_cpuid_entry(vcpu, HYPERV_CPUID_ENLIGHTMENT_INFO);
+		dbg = vcpu_get_cpuid_entry(vcpu, HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES);
 
 		run = vcpu->run;
 
 		switch (stage) {
 		case 0:
+			feat->eax |= HV_MSR_HYPERCALL_AVAILABLE;
 			hcall->control = 0xdeadbeef;
 			hcall->expect = HV_STATUS_INVALID_HYPERCALL_CODE;
 			break;
@@ -551,7 +551,7 @@ static void guest_test_hcalls_access(void)
 			hcall->expect = HV_STATUS_ACCESS_DENIED;
 			break;
 		case 2:
-			feat.ebx |= HV_POST_MESSAGES;
+			feat->ebx |= HV_POST_MESSAGES;
 			hcall->expect = HV_STATUS_INVALID_HYPERCALL_INPUT;
 			break;
 
@@ -560,7 +560,7 @@ static void guest_test_hcalls_access(void)
 			hcall->expect = HV_STATUS_ACCESS_DENIED;
 			break;
 		case 4:
-			feat.ebx |= HV_SIGNAL_EVENTS;
+			feat->ebx |= HV_SIGNAL_EVENTS;
 			hcall->expect = HV_STATUS_INVALID_HYPERCALL_INPUT;
 			break;
 
@@ -569,11 +569,11 @@ static void guest_test_hcalls_access(void)
 			hcall->expect = HV_STATUS_INVALID_HYPERCALL_CODE;
 			break;
 		case 6:
-			dbg.eax |= HV_X64_SYNDBG_CAP_ALLOW_KERNEL_DEBUGGING;
+			dbg->eax |= HV_X64_SYNDBG_CAP_ALLOW_KERNEL_DEBUGGING;
 			hcall->expect = HV_STATUS_ACCESS_DENIED;
 			break;
 		case 7:
-			feat.ebx |= HV_DEBUGGING;
+			feat->ebx |= HV_DEBUGGING;
 			hcall->expect = HV_STATUS_OPERATION_DENIED;
 			break;
 
@@ -582,7 +582,7 @@ static void guest_test_hcalls_access(void)
 			hcall->expect = HV_STATUS_ACCESS_DENIED;
 			break;
 		case 9:
-			recomm.eax |= HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED;
+			recomm->eax |= HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED;
 			hcall->expect = HV_STATUS_SUCCESS;
 			break;
 		case 10:
@@ -590,7 +590,7 @@ static void guest_test_hcalls_access(void)
 			hcall->expect = HV_STATUS_ACCESS_DENIED;
 			break;
 		case 11:
-			recomm.eax |= HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED;
+			recomm->eax |= HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED;
 			hcall->expect = HV_STATUS_SUCCESS;
 			break;
 
@@ -599,7 +599,7 @@ static void guest_test_hcalls_access(void)
 			hcall->expect = HV_STATUS_ACCESS_DENIED;
 			break;
 		case 13:
-			recomm.eax |= HV_X64_CLUSTER_IPI_RECOMMENDED;
+			recomm->eax |= HV_X64_CLUSTER_IPI_RECOMMENDED;
 			hcall->expect = HV_STATUS_INVALID_HYPERCALL_INPUT;
 			break;
 		case 14:
@@ -613,7 +613,7 @@ static void guest_test_hcalls_access(void)
 			hcall->expect = HV_STATUS_ACCESS_DENIED;
 			break;
 		case 16:
-			recomm.ebx = 0xfff;
+			recomm->ebx = 0xfff;
 			hcall->expect = HV_STATUS_SUCCESS;
 			break;
 		case 17:
@@ -622,7 +622,7 @@ static void guest_test_hcalls_access(void)
 			hcall->ud_expected = true;
 			break;
 		case 18:
-			feat.edx |= HV_X64_HYPERCALL_XMM_INPUT_AVAILABLE;
+			feat->edx |= HV_X64_HYPERCALL_XMM_INPUT_AVAILABLE;
 			hcall->ud_expected = false;
 			hcall->expect = HV_STATUS_SUCCESS;
 			break;
@@ -633,7 +633,9 @@ static void guest_test_hcalls_access(void)
 			break;
 		}
 
-		hv_set_cpuid(vcpu, best, &feat, &recomm, &dbg);
+		vcpu_set_cpuid(vcpu);
+
+		memcpy(prev_cpuid, vcpu->cpuid, kvm_cpuid2_size(vcpu->cpuid->nent));
 
 		if (hcall->control)
 			pr_debug("Stage %d: testing hcall: 0x%lx\n", stage,
