linux-kernel - [PATCH v2 21/42] KVM: selftests: Use get_cpuid_entry() in kvm_get_supported_cpuid

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Message-Id: <20220614200707.3315957-22-seanjc@google.com>
Date:   Tue, 14 Jun 2022 20:06:46 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Sean Christopherson <seanjc@...gle.com>,
        Jim Mattson <jmattson@...gle.com>
Subject: [PATCH v2 21/42] KVM: selftests: Use get_cpuid_entry() in kvm_get_supported_cpuid_index()

Use get_cpuid_entry() in kvm_get_supported_cpuid_index() to replace
functionally identical code.

Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 .../selftests/kvm/include/x86_64/processor.h  | 14 ++++----
 .../selftests/kvm/lib/x86_64/processor.c      | 32 -------------------
 2 files changed, 7 insertions(+), 39 deletions(-)

diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h
index 36c75acd4509..b62d93a15903 100644
--- a/tools/testing/selftests/kvm/include/x86_64/processor.h
+++ b/tools/testing/selftests/kvm/include/x86_64/processor.h
@@ -616,6 +616,8 @@ static inline struct kvm_cpuid2 *allocate_kvm_cpuid2(int nr_entries)
 	return cpuid;
 }
 
+struct kvm_cpuid_entry2 *get_cpuid_entry(struct kvm_cpuid2 *cpuid,
+					 uint32_t function, uint32_t index);
 void vcpu_init_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid);
 
 static inline int __vcpu_set_cpuid(struct kvm_vcpu *vcpu)
@@ -641,8 +643,11 @@ static inline void vcpu_set_cpuid(struct kvm_vcpu *vcpu)
 	vcpu_ioctl(vcpu, KVM_GET_CPUID2, vcpu->cpuid);
 }
 
-struct kvm_cpuid_entry2 *
-kvm_get_supported_cpuid_index(uint32_t function, uint32_t index);
+static inline struct kvm_cpuid_entry2 *kvm_get_supported_cpuid_index(uint32_t function,
+								     uint32_t index)
+{
+	return get_cpuid_entry(kvm_get_supported_cpuid(), function, index);
+}
 
 static inline struct kvm_cpuid_entry2 *
 kvm_get_supported_cpuid_entry(uint32_t function)
@@ -689,11 +694,6 @@ 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);
 
-/*
- * get_cpuid() - find matching CPUID entry and return pointer to it.
- */
-struct kvm_cpuid_entry2 *get_cpuid_entry(struct kvm_cpuid2 *cpuid,
-					 uint32_t function, uint32_t index);
 /*
  * set_cpuid() - overwrites a matching cpuid entry with the provided value.
  *		 matches based on ent->function && ent->index. returns true
diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c
index d4ea5628746c..8226aa5274f3 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/processor.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c
@@ -766,38 +766,6 @@ void vcpu_init_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid)
 	vcpu_set_cpuid(vcpu);
 }
 
-/*
- * Locate a cpuid entry.
- *
- * Input Args:
- *   function: The function of the cpuid entry to find.
- *   index: The index of the cpuid entry.
- *
- * Output Args: None
- *
- * Return: A pointer to the cpuid entry. Never returns NULL.
- */
-struct kvm_cpuid_entry2 *
-kvm_get_supported_cpuid_index(uint32_t function, uint32_t index)
-{
-	struct kvm_cpuid2 *cpuid;
-	struct kvm_cpuid_entry2 *entry = NULL;
-	int i;
-
-	cpuid = kvm_get_supported_cpuid();
-	for (i = 0; i < cpuid->nent; i++) {
-		if (cpuid->entries[i].function == function &&
-		    cpuid->entries[i].index == index) {
-			entry = &cpuid->entries[i];
-			break;
-		}
-	}
-
-	TEST_ASSERT(entry, "Guest CPUID entry not found: (EAX=%x, ECX=%x).",
-		    function, index);
-	return entry;
-}
-
 uint64_t vcpu_get_msr(struct kvm_vcpu *vcpu, uint64_t msr_index)
 {
 	struct {
-- 
2.36.1.476.g0c4daa206d-goog