linux-kernel - [PATCH 4/6] KVM: x86: Drop return value from kvm

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Message-Id: <20200302195736.24777-5-sean.j.christopherson@intel.com>
Date:   Mon,  2 Mar 2020 11:57:34 -0800
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <sean.j.christopherson@...el.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jan Kiszka <jan.kiszka@...mens.com>,
        Xiaoyao Li <xiaoyao.li@...el.com>
Subject: [PATCH 4/6] KVM: x86: Drop return value from kvm_cpuid()

Remove the boolean return from kvm_cpuid() now that all callers ignore
the return value.

No functional change intended.

Signed-off-by: Sean Christopherson <sean.j.christopherson@...el.com>
---
 arch/x86/include/asm/kvm_emulate.h | 2 +-
 arch/x86/kvm/cpuid.c               | 4 +---
 arch/x86/kvm/cpuid.h               | 2 +-
 arch/x86/kvm/x86.c                 | 4 ++--
 4 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h
index ded06515d30f..20a26dc792ce 100644
--- a/arch/x86/include/asm/kvm_emulate.h
+++ b/arch/x86/include/asm/kvm_emulate.h
@@ -220,7 +220,7 @@ struct x86_emulate_ops {
 			 struct x86_instruction_info *info,
 			 enum x86_intercept_stage stage);
 
-	bool (*get_cpuid)(struct x86_emulate_ctxt *ctxt, u32 *eax, u32 *ebx,
+	void (*get_cpuid)(struct x86_emulate_ctxt *ctxt, u32 *eax, u32 *ebx,
 			  u32 *ecx, u32 *edx, bool check_limit);
 	int (*get_cpuid_maxphyaddr)(struct x86_emulate_ctxt *ctxt);
 	bool (*guest_has_long_mode)(struct x86_emulate_ctxt *ctxt);
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index c320126e0118..869526930cf7 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -997,8 +997,7 @@ static bool cpuid_function_in_range(struct kvm_vcpu *vcpu, u32 function)
 	return max && function <= max->eax;
 }
 
-/* Returns true if the requested leaf/function exists in guest CPUID. */
-bool kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx,
+void kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx,
 	       u32 *ecx, u32 *edx, bool check_limit)
 {
 	const u32 function = *eax, index = *ecx;
@@ -1049,7 +1048,6 @@ bool kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx,
 		}
 	}
 	trace_kvm_cpuid(function, *eax, *ebx, *ecx, *edx, found);
-	return found;
 }
 EXPORT_SYMBOL_GPL(kvm_cpuid);
 
diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h
index 7366c618aa04..5df64ff25663 100644
--- a/arch/x86/kvm/cpuid.h
+++ b/arch/x86/kvm/cpuid.h
@@ -22,7 +22,7 @@ int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
 int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu *vcpu,
 			      struct kvm_cpuid2 *cpuid,
 			      struct kvm_cpuid_entry2 __user *entries);
-bool kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx,
+void kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx,
 	       u32 *ecx, u32 *edx, bool check_limit);
 
 int cpuid_query_maxphyaddr(struct kvm_vcpu *vcpu);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 5467ee71c25b..bfff92fcf0d1 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6203,10 +6203,10 @@ static int emulator_intercept(struct x86_emulate_ctxt *ctxt,
 	return kvm_x86_ops->check_intercept(emul_to_vcpu(ctxt), info, stage);
 }
 
-static bool emulator_get_cpuid(struct x86_emulate_ctxt *ctxt,
+static void emulator_get_cpuid(struct x86_emulate_ctxt *ctxt,
 			u32 *eax, u32 *ebx, u32 *ecx, u32 *edx, bool check_limit)
 {
-	return kvm_cpuid(emul_to_vcpu(ctxt), eax, ebx, ecx, edx, check_limit);
+	kvm_cpuid(emul_to_vcpu(ctxt), eax, ebx, ecx, edx, check_limit);
 }
 
 static int emulator_get_cpuid_maxphyaddr(struct x86_emulate_ctxt *ctxt)
-- 
2.24.1