KVM: x86: move setting of ept_identity_map_addr to vmx.c

Add kvm_x86_ops->set_identity_map_addr and set ept_identity_map_addr
in VMX specific code so that ept_identity_map_addr can be moved out
of 'struct kvm_arch' in a future patch.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/include/asm/kvm_host.h

@@ -1021,6 +1021,7 @@ struct kvm_x86_ops {
 	void (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector);
 	int (*sync_pir_to_irr)(struct kvm_vcpu *vcpu);
 	int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
+	int (*set_identity_map_addr)(struct kvm *kvm, u64 ident_addr);
 	int (*get_tdp_level)(struct kvm_vcpu *vcpu);
 	u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
 	int (*get_lpage_level)(void);

arch/x86/kvm/svm.c

@@ -5269,6 +5269,11 @@ static int svm_set_tss_addr(struct kvm *kvm, unsigned int addr)
 	return 0;
 }
 
+static int svm_set_identity_map_addr(struct kvm *kvm, u64 ident_addr)
+{
+	return 0;
+}
+
 static void svm_flush_tlb(struct kvm_vcpu *vcpu, bool invalidate_gpa)
 {
 	struct vcpu_svm *svm = to_svm(vcpu);
@@ -6959,6 +6964,7 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = {
 	.apicv_post_state_restore = avic_post_state_restore,
 
 	.set_tss_addr = svm_set_tss_addr,
+	.set_identity_map_addr = svm_set_identity_map_addr,
 	.get_tdp_level = get_npt_level,
 	.get_mt_mask = svm_get_mt_mask,
 

arch/x86/kvm/vmx.c

@@ -6110,6 +6110,12 @@ static int vmx_set_tss_addr(struct kvm *kvm, unsigned int addr)
 	return init_rmode_tss(kvm);
 }
 
+static int vmx_set_identity_map_addr(struct kvm *kvm, u64 ident_addr)
+{
+	kvm->arch.ept_identity_map_addr = ident_addr;
+	return 0;
+}
+
 static bool rmode_exception(struct kvm_vcpu *vcpu, int vec)
 {
 	switch (vec) {
@@ -12510,6 +12516,7 @@ static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
 	.deliver_posted_interrupt = vmx_deliver_posted_interrupt,
 
 	.set_tss_addr = vmx_set_tss_addr,
+	.set_identity_map_addr = vmx_set_identity_map_addr,
 	.get_tdp_level = get_ept_level,
 	.get_mt_mask = vmx_get_mt_mask,
 

arch/x86/kvm/x86.c

@@ -3964,8 +3964,7 @@ static int kvm_vm_ioctl_set_tss_addr(struct kvm *kvm, unsigned long addr)
 static int kvm_vm_ioctl_set_identity_map_addr(struct kvm *kvm,
 					      u64 ident_addr)
 {
-	kvm->arch.ept_identity_map_addr = ident_addr;
-	return 0;
+	return kvm_x86_ops->set_identity_map_addr(kvm, ident_addr);
 }
 
 static int kvm_vm_ioctl_set_nr_mmu_pages(struct kvm *kvm,