KVM: x86: Rename virtualization {en,dis}abling APIs to match common KVM

Rename x86's the per-CPU vendor hooks used to enable virtualization in
hardware to align with the recently renamed arch hooks.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Kai Huang <kai.huang@intel.com>
Message-ID: <20240830043600.127750-7-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/include/asm/kvm-x86-ops.h

@@ -14,8 +14,8 @@ BUILD_BUG_ON(1)
  * be __static_call_return0.
  */
 KVM_X86_OP(check_processor_compatibility)
-KVM_X86_OP(hardware_enable)
-KVM_X86_OP(hardware_disable)
+KVM_X86_OP(enable_virtualization_cpu)
+KVM_X86_OP(disable_virtualization_cpu)
 KVM_X86_OP(hardware_unsetup)
 KVM_X86_OP(has_emulated_msr)
 KVM_X86_OP(vcpu_after_set_cpuid)

arch/x86/include/asm/kvm_host.h

@@ -1629,8 +1629,8 @@ struct kvm_x86_ops {
 
 	int (*check_processor_compatibility)(void);
 
-	int (*hardware_enable)(void);
-	void (*hardware_disable)(void);
+	int (*enable_virtualization_cpu)(void);
+	void (*disable_virtualization_cpu)(void);
 	void (*hardware_unsetup)(void);
 	bool (*has_emulated_msr)(struct kvm *kvm, u32 index);
 	void (*vcpu_after_set_cpuid)(struct kvm_vcpu *vcpu);

arch/x86/kvm/svm/svm.c

@@ -592,14 +592,14 @@ static inline void kvm_cpu_svm_disable(void)
 	}
 }
 
-static void svm_emergency_disable(void)
+static void svm_emergency_disable_virtualization_cpu(void)
 {
 	kvm_rebooting = true;
 
 	kvm_cpu_svm_disable();
 }
 
-static void svm_hardware_disable(void)
+static void svm_disable_virtualization_cpu(void)
 {
 	/* Make sure we clean up behind us */
 	if (tsc_scaling)
@@ -610,7 +610,7 @@ static void svm_hardware_disable(void)
 	amd_pmu_disable_virt();
 }
 
-static int svm_hardware_enable(void)
+static int svm_enable_virtualization_cpu(void)
 {
 
 	struct svm_cpu_data *sd;
@@ -1533,7 +1533,7 @@ static void svm_prepare_switch_to_guest(struct kvm_vcpu *vcpu)
 	 * TSC_AUX is always virtualized for SEV-ES guests when the feature is
 	 * available. The user return MSR support is not required in this case
 	 * because TSC_AUX is restored on #VMEXIT from the host save area
-	 * (which has been initialized in svm_hardware_enable()).
+	 * (which has been initialized in svm_enable_virtualization_cpu()).
 	 */
 	if (likely(tsc_aux_uret_slot >= 0) &&
 	    (!boot_cpu_has(X86_FEATURE_V_TSC_AUX) || !sev_es_guest(vcpu->kvm)))
@@ -3132,7 +3132,7 @@ static int svm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr)
 		 * feature is available. The user return MSR support is not
 		 * required in this case because TSC_AUX is restored on #VMEXIT
 		 * from the host save area (which has been initialized in
-		 * svm_hardware_enable()).
+		 * svm_enable_virtualization_cpu()).
 		 */
 		if (boot_cpu_has(X86_FEATURE_V_TSC_AUX) && sev_es_guest(vcpu->kvm))
 			break;
@@ -4980,8 +4980,8 @@ static struct kvm_x86_ops svm_x86_ops __initdata = {
 	.check_processor_compatibility = svm_check_processor_compat,
 
 	.hardware_unsetup = svm_hardware_unsetup,
-	.hardware_enable = svm_hardware_enable,
-	.hardware_disable = svm_hardware_disable,
+	.enable_virtualization_cpu = svm_enable_virtualization_cpu,
+	.disable_virtualization_cpu = svm_disable_virtualization_cpu,
 	.has_emulated_msr = svm_has_emulated_msr,
 
 	.vcpu_create = svm_vcpu_create,
@@ -5411,7 +5411,7 @@ static void __svm_exit(void)
 {
 	kvm_x86_vendor_exit();
 
-	cpu_emergency_unregister_virt_callback(svm_emergency_disable);
+	cpu_emergency_unregister_virt_callback(svm_emergency_disable_virtualization_cpu);
 }
 
 static int __init svm_init(void)
@@ -5427,7 +5427,7 @@ static int __init svm_init(void)
 	if (r)
 		return r;
 
-	cpu_emergency_register_virt_callback(svm_emergency_disable);
+	cpu_emergency_register_virt_callback(svm_emergency_disable_virtualization_cpu);
 
 	/*
 	 * Common KVM initialization _must_ come last, after this, /dev/kvm is

arch/x86/kvm/vmx/main.c

@@ -23,8 +23,8 @@ struct kvm_x86_ops vt_x86_ops __initdata = {
 
 	.hardware_unsetup = vmx_hardware_unsetup,
 
-	.hardware_enable = vmx_hardware_enable,
-	.hardware_disable = vmx_hardware_disable,
+	.enable_virtualization_cpu = vmx_enable_virtualization_cpu,
+	.disable_virtualization_cpu = vmx_disable_virtualization_cpu,
 	.has_emulated_msr = vmx_has_emulated_msr,
 
 	.vm_size = sizeof(struct kvm_vmx),

arch/x86/kvm/vmx/vmx.c

@@ -755,7 +755,7 @@ fault:
 	return -EIO;
 }
 
-static void vmx_emergency_disable(void)
+static void vmx_emergency_disable_virtualization_cpu(void)
 {
 	int cpu = raw_smp_processor_id();
 	struct loaded_vmcs *v;
@@ -2844,7 +2844,7 @@ fault:
 	return -EFAULT;
 }
 
-int vmx_hardware_enable(void)
+int vmx_enable_virtualization_cpu(void)
 {
 	int cpu = raw_smp_processor_id();
 	u64 phys_addr = __pa(per_cpu(vmxarea, cpu));
@@ -2881,7 +2881,7 @@ static void vmclear_local_loaded_vmcss(void)
 		__loaded_vmcs_clear(v);
 }
 
-void vmx_hardware_disable(void)
+void vmx_disable_virtualization_cpu(void)
 {
 	vmclear_local_loaded_vmcss();
 
@@ -8584,7 +8584,7 @@ static void __vmx_exit(void)
 {
 	allow_smaller_maxphyaddr = false;
 
-	cpu_emergency_unregister_virt_callback(vmx_emergency_disable);
+	cpu_emergency_unregister_virt_callback(vmx_emergency_disable_virtualization_cpu);
 
 	vmx_cleanup_l1d_flush();
 }
@@ -8632,7 +8632,7 @@ static int __init vmx_init(void)
 		pi_init_cpu(cpu);
 	}
 
-	cpu_emergency_register_virt_callback(vmx_emergency_disable);
+	cpu_emergency_register_virt_callback(vmx_emergency_disable_virtualization_cpu);
 
 	vmx_check_vmcs12_offsets();
 

arch/x86/kvm/vmx/x86_ops.h

@@ -13,8 +13,8 @@ extern struct kvm_x86_init_ops vt_init_ops __initdata;
 
 void vmx_hardware_unsetup(void);
 int vmx_check_processor_compat(void);
-int vmx_hardware_enable(void);
-void vmx_hardware_disable(void);
+int vmx_enable_virtualization_cpu(void);
+void vmx_disable_virtualization_cpu(void);
 int vmx_vm_init(struct kvm *kvm);
 void vmx_vm_destroy(struct kvm *kvm);
 int vmx_vcpu_precreate(struct kvm *kvm);

arch/x86/kvm/x86.c

@@ -9749,7 +9749,7 @@ int kvm_x86_vendor_init(struct kvm_x86_init_ops *ops)
 
 	guard(mutex)(&vendor_module_lock);
 
-	if (kvm_x86_ops.hardware_enable) {
+	if (kvm_x86_ops.enable_virtualization_cpu) {
 		pr_err("already loaded vendor module '%s'\n", kvm_x86_ops.name);
 		return -EEXIST;
 	}
@@ -9876,7 +9876,7 @@ int kvm_x86_vendor_init(struct kvm_x86_init_ops *ops)
 	return 0;
 
 out_unwind_ops:
-	kvm_x86_ops.hardware_enable = NULL;
+	kvm_x86_ops.enable_virtualization_cpu = NULL;
 	kvm_x86_call(hardware_unsetup)();
 out_mmu_exit:
 	kvm_mmu_vendor_module_exit();
@@ -9917,7 +9917,7 @@ void kvm_x86_vendor_exit(void)
 	WARN_ON(static_branch_unlikely(&kvm_xen_enabled.key));
 #endif
 	mutex_lock(&vendor_module_lock);
-	kvm_x86_ops.hardware_enable = NULL;
+	kvm_x86_ops.enable_virtualization_cpu = NULL;
 	mutex_unlock(&vendor_module_lock);
 }
 EXPORT_SYMBOL_GPL(kvm_x86_vendor_exit);
@@ -12528,7 +12528,7 @@ int kvm_arch_enable_virtualization_cpu(void)
 	if (ret)
 		return ret;
 
-	ret = kvm_x86_call(hardware_enable)();
+	ret = kvm_x86_call(enable_virtualization_cpu)();
 	if (ret != 0)
 		return ret;
 
@@ -12610,7 +12610,7 @@ int kvm_arch_enable_virtualization_cpu(void)
 
 void kvm_arch_disable_virtualization_cpu(void)
 {
-	kvm_x86_call(hardware_disable)();
+	kvm_x86_call(disable_virtualization_cpu)();
 	drop_user_return_notifiers();
 }