KVM: cleanup emulate_instruction

emulate_instruction had many callers, but only one used all
parameters. One parameter was unused, another one is now
hidden by a wrapper function (required for a future addition
anyway), so most callers use now a shorter parameter list.

Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index fd8ffde..f3c60fb 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2939,7 +2939,7 @@
 	 * Cause the #SS fault with 0 error code in VM86 mode.
 	 */
 	if (((vec == GP_VECTOR) || (vec == SS_VECTOR)) && err_code == 0)
-		if (emulate_instruction(vcpu, 0, 0, 0) == EMULATE_DONE)
+		if (emulate_instruction(vcpu, 0) == EMULATE_DONE)
 			return 1;
 	/*
 	 * Forward all other exceptions that are valid in real mode.
@@ -3036,7 +3036,7 @@
 	}
 
 	if (is_invalid_opcode(intr_info)) {
-		er = emulate_instruction(vcpu, 0, 0, EMULTYPE_TRAP_UD);
+		er = emulate_instruction(vcpu, EMULTYPE_TRAP_UD);
 		if (er != EMULATE_DONE)
 			kvm_queue_exception(vcpu, UD_VECTOR);
 		return 1;
@@ -3127,7 +3127,7 @@
 	++vcpu->stat.io_exits;
 
 	if (string || in)
-		return emulate_instruction(vcpu, 0, 0, 0) == EMULATE_DONE;
+		return emulate_instruction(vcpu, 0) == EMULATE_DONE;
 
 	port = exit_qualification >> 16;
 	size = (exit_qualification & 7) + 1;
@@ -3372,7 +3372,7 @@
 
 static int handle_invd(struct kvm_vcpu *vcpu)
 {
-	return emulate_instruction(vcpu, 0, 0, 0) == EMULATE_DONE;
+	return emulate_instruction(vcpu, 0) == EMULATE_DONE;
 }
 
 static int handle_invlpg(struct kvm_vcpu *vcpu)
@@ -3403,7 +3403,7 @@
 
 static int handle_apic_access(struct kvm_vcpu *vcpu)
 {
-	return emulate_instruction(vcpu, 0, 0, 0) == EMULATE_DONE;
+	return emulate_instruction(vcpu, 0) == EMULATE_DONE;
 }
 
 static int handle_task_switch(struct kvm_vcpu *vcpu)
@@ -3618,7 +3618,7 @@
 		    && (kvm_get_rflags(&vmx->vcpu) & X86_EFLAGS_IF))
 			return handle_interrupt_window(&vmx->vcpu);
 
-		err = emulate_instruction(vcpu, 0, 0, 0);
+		err = emulate_instruction(vcpu, 0);
 
 		if (err == EMULATE_DO_MMIO) {
 			ret = 0;