KVM: MMU: move the relevant mmu code to mmu.c

Move the mmu code in kvm_arch_vcpu_init() to kvm_mmu_create()
Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

arch/x86/include/asm/kvm_host.h

@@ -752,6 +752,7 @@ void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
 int kvm_mmu_load(struct kvm_vcpu *vcpu);
 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
+gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
 			      struct x86_exception *exception);
 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
@@ -773,6 +774,11 @@ void kvm_disable_tdp(void);
 int complete_pio(struct kvm_vcpu *vcpu);
 bool kvm_check_iopl(struct kvm_vcpu *vcpu);
 
+static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
+{
+	return gpa;
+}
+
 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
 {
 	struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);

arch/x86/kvm/mmu.c

@@ -3839,7 +3839,11 @@ static int alloc_mmu_pages(struct kvm_vcpu *vcpu)
 int kvm_mmu_create(struct kvm_vcpu *vcpu)
 {
 	ASSERT(vcpu);
-	ASSERT(!VALID_PAGE(vcpu->arch.mmu.root_hpa));
+
+	vcpu->arch.walk_mmu = &vcpu->arch.mmu;
+	vcpu->arch.mmu.root_hpa = INVALID_PAGE;
+	vcpu->arch.mmu.translate_gpa = translate_gpa;
+	vcpu->arch.nested_mmu.translate_gpa = translate_nested_gpa;
 
 	return alloc_mmu_pages(vcpu);
 }

arch/x86/kvm/x86.c

@@ -3430,12 +3430,7 @@ void kvm_get_segment(struct kvm_vcpu *vcpu,
 	kvm_x86_ops->get_segment(vcpu, var, seg);
 }
 
-static gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
-{
-	return gpa;
-}
-
-static gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
+gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
 {
 	gpa_t t_gpa;
 	struct x86_exception exception;
@@ -5915,10 +5910,6 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
 	kvm = vcpu->kvm;
 
 	vcpu->arch.emulate_ctxt.ops = &emulate_ops;
-	vcpu->arch.walk_mmu = &vcpu->arch.mmu;
-	vcpu->arch.mmu.root_hpa = INVALID_PAGE;
-	vcpu->arch.mmu.translate_gpa = translate_gpa;
-	vcpu->arch.nested_mmu.translate_gpa = translate_nested_gpa;
 	if (!irqchip_in_kernel(kvm) || kvm_vcpu_is_bsp(vcpu))
 		vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
 	else