KVM: move complete_insn_gp() into x86.c

move the complete_insn_gp() helper function out of the VMX part
into the generic x86 part to make it usable by SVM.

Signed-off-by: Andre Przywara <[email protected]>
Signed-off-by: Marcelo Tosatti <[email protected]>

Author: aprzywar

arch/x86/include/asm/kvm_host.h

@@ -828,4 +828,6 @@ void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
 
+void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
+
 #endif /* _ASM_X86_KVM_HOST_H */

arch/x86/kvm/vmx.c

@@ -3147,14 +3147,6 @@ vmx_patch_hypercall(struct kvm_vcpu *vcpu, unsigned char *hypercall)
 	hypercall[2] = 0xc1;
 }
 
-static void complete_insn_gp(struct kvm_vcpu *vcpu, int err)
-{
-	if (err)
-		kvm_inject_gp(vcpu, 0);
-	else
-		skip_emulated_instruction(vcpu);
-}
-
 static int handle_cr(struct kvm_vcpu *vcpu)
 {
 	unsigned long exit_qualification, val;
@@ -3172,21 +3164,21 @@ static int handle_cr(struct kvm_vcpu *vcpu)
 		switch (cr) {
 		case 0:
 			err = kvm_set_cr0(vcpu, val);
-			complete_insn_gp(vcpu, err);
+			kvm_complete_insn_gp(vcpu, err);
 			return 1;
 		case 3:
 			err = kvm_set_cr3(vcpu, val);
-			complete_insn_gp(vcpu, err);
+			kvm_complete_insn_gp(vcpu, err);
 			return 1;
 		case 4:
 			err = kvm_set_cr4(vcpu, val);
-			complete_insn_gp(vcpu, err);
+			kvm_complete_insn_gp(vcpu, err);
 			return 1;
 		case 8: {
 				u8 cr8_prev = kvm_get_cr8(vcpu);
 				u8 cr8 = kvm_register_read(vcpu, reg);
 				err = kvm_set_cr8(vcpu, cr8);
-				complete_insn_gp(vcpu, err);
+				kvm_complete_insn_gp(vcpu, err);
 				if (irqchip_in_kernel(vcpu->kvm))
 					return 1;
 				if (cr8_prev <= cr8)

arch/x86/kvm/x86.c

@@ -334,6 +334,15 @@ void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr)
 }
 EXPORT_SYMBOL_GPL(kvm_requeue_exception);
 
+void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err)
+{
+	if (err)
+		kvm_inject_gp(vcpu, 0);
+	else
+		kvm_x86_ops->skip_emulated_instruction(vcpu);
+}
+EXPORT_SYMBOL_GPL(kvm_complete_insn_gp);
+
 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault)
 {
 	++vcpu->stat.pf_guest;