KVM: VMX: Handle INVVPID fallback logic in vpid_sync_vcpu_addr()

Directly invoke vpid_sync_context() to do a global INVVPID when the
individual address variant is not supported instead of deferring such
behavior to the caller.  This allows for additional consolidation of
code as the logic is basically identical to the emulation of the
individual address variant in handle_invvpid().

No functional change intended.
Reviewed-by: NMiaohe Lin <linmiaohe@huawei.com>
Reviewed-by: NVitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NSean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200320212833.3507-12-sean.j.christopherson@intel.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/vmx/ops.h

@@ -291,17 +291,15 @@ static inline void vpid_sync_context(int vpid)
 		vpid_sync_vcpu_global();
 }
 
-static inline bool vpid_sync_vcpu_addr(int vpid, gva_t addr)
+static inline void vpid_sync_vcpu_addr(int vpid, gva_t addr)
 {
 	if (vpid == 0)
-		return true;
+		return;
 
-	if (cpu_has_vmx_invvpid_individual_addr()) {
+	if (cpu_has_vmx_invvpid_individual_addr())
 		__invvpid(VMX_VPID_EXTENT_INDIVIDUAL_ADDR, vpid, addr);
-		return true;
-	}
-
-	return false;
+	else
+		vpid_sync_context(vpid);
 }
 
 static inline void ept_sync_global(void)

arch/x86/kvm/vmx/vmx.c

@@ -2842,8 +2842,7 @@ static void vmx_flush_tlb_gva(struct kvm_vcpu *vcpu, gva_t addr)
 {
 	int vpid = to_vmx(vcpu)->vpid;
 
-	if (!vpid_sync_vcpu_addr(vpid, addr))
-		vpid_sync_context(vpid);
+	vpid_sync_vcpu_addr(vpid, addr);
 
 	/*
 	 * If VPIDs are not supported or enabled, then the above is a no-op.