KVM: x86: Move kvm_x86_ops.vcpu_after_set_cpuid() into kvm_vcpu_after_set_cpuid()

kvm_x86_ops.vcpu_after_set_cpuid() is used to update vmx/svm specific
vcpu settings based on updated CPUID settings. So it's supposed to be
called after CPUIDs are updated, i.e., kvm_update_cpuid_runtime().

Currently, kvm_update_cpuid_runtime() only updates CPUID bits of OSXSAVE,
APIC, OSPKE, MWAIT, KVM_FEATURE_PV_UNHALT and CPUID(0xD,0).ebx and
CPUID(0xD, 1).ebx. None of them is consumed by vmx/svm's
update_vcpu_after_set_cpuid(). So there is no dependency between them.

Move kvm_x86_ops.vcpu_after_set_cpuid() into kvm_vcpu_after_set_cpuid() is
obviously more reasonable.
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Message-Id: <20200709043426.92712-6-xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/cpuid.c

@@ -121,6 +121,8 @@ static void kvm_vcpu_after_set_cpuid(struct kvm_vcpu *vcpu)
 	struct kvm_lapic *apic = vcpu->arch.apic;
 	struct kvm_cpuid_entry2 *best;
 
+	kvm_x86_ops.vcpu_after_set_cpuid(vcpu);
+
 	best = kvm_find_cpuid_entry(vcpu, 1, 0);
 	if (best && apic) {
 		if (cpuid_entry_has(best, X86_FEATURE_TSC_DEADLINE_TIMER))
@@ -228,7 +230,6 @@ int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
 	}
 
 	cpuid_fix_nx_cap(vcpu);
-	kvm_x86_ops.vcpu_after_set_cpuid(vcpu);
 	kvm_update_cpuid_runtime(vcpu);
 	kvm_vcpu_after_set_cpuid(vcpu);
 
@@ -257,7 +258,6 @@ int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
 		goto out;
 	}
 
-	kvm_x86_ops.vcpu_after_set_cpuid(vcpu);
 	kvm_update_cpuid_runtime(vcpu);
 	kvm_vcpu_after_set_cpuid(vcpu);
 out: