KVM: PPC: Move kvm_vcpu_init() invocation to common code

Move the kvm_cpu_{un}init() calls to common PPC code as an intermediate
step towards removing kvm_cpu_{un}init() altogether.

No functional change intended.

Signed-off-by: Sean Christopherson <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>

Author: Sean Christopherson

arch/powerpc/include/asm/kvm_ppc.h

@@ -119,8 +119,7 @@ extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr,
 			enum xlate_instdata xlid, enum xlate_readwrite xlrw,
 			struct kvmppc_pte *pte);
 
-extern int kvmppc_core_vcpu_create(struct kvm *kvm, struct kvm_vcpu *vcpu,
-				   unsigned int id);
+extern int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu);
 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
 extern int kvmppc_core_check_processor_compat(void);
@@ -274,8 +273,7 @@ struct kvmppc_ops {
 	void (*inject_interrupt)(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags);
 	void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
 	int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
-	int (*vcpu_create)(struct kvm *kvm, struct kvm_vcpu *vcpu,
-			   unsigned int id);
+	int (*vcpu_create)(struct kvm_vcpu *vcpu);
 	void (*vcpu_free)(struct kvm_vcpu *vcpu);
 	int (*check_requests)(struct kvm_vcpu *vcpu);
 	int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);

arch/powerpc/kvm/book3s.c

@@ -789,10 +789,9 @@ void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
 	kvm_vcpu_kick(vcpu);
 }
 
-int kvmppc_core_vcpu_create(struct kvm *kvm, struct kvm_vcpu *vcpu,
-			    unsigned int id)
+int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu)
 {
-	return kvm->arch.kvm_ops->vcpu_create(kvm, vcpu, id);
+	return vcpu->kvm->arch.kvm_ops->vcpu_create(vcpu);
 }
 
 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)

arch/powerpc/kvm/book3s_hv.c

@@ -2271,16 +2271,16 @@ static void debugfs_vcpu_init(struct kvm_vcpu *vcpu, unsigned int id)
 }
 #endif /* CONFIG_KVM_BOOK3S_HV_EXIT_TIMING */
 
-static int kvmppc_core_vcpu_create_hv(struct kvm *kvm, struct kvm_vcpu *vcpu,
-				      unsigned int id)
+static int kvmppc_core_vcpu_create_hv(struct kvm_vcpu *vcpu)
 {
 	int err;
 	int core;
 	struct kvmppc_vcore *vcore;
+	struct kvm *kvm;
+	unsigned int id;
 
-	err = kvm_vcpu_init(vcpu, kvm, id);
-	if (err)
-		return err;
+	kvm = vcpu->kvm;
+	id = vcpu->vcpu_id;
 
 	vcpu->arch.shared = &vcpu->arch.shregs;
 #ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
@@ -2362,7 +2362,7 @@ static int kvmppc_core_vcpu_create_hv(struct kvm *kvm, struct kvm_vcpu *vcpu,
 	mutex_unlock(&kvm->lock);
 
 	if (!vcore)
-		goto uninit_vcpu;
+		return err;
 
 	spin_lock(&vcore->lock);
 	++vcore->num_threads;
@@ -2378,10 +2378,6 @@ static int kvmppc_core_vcpu_create_hv(struct kvm *kvm, struct kvm_vcpu *vcpu,
 	debugfs_vcpu_init(vcpu, id);
 
 	return 0;
-
-uninit_vcpu:
-	kvm_vcpu_uninit(vcpu);
-	return err;
 }
 
 static int kvmhv_set_smt_mode(struct kvm *kvm, unsigned long smt_mode,
@@ -2435,7 +2431,6 @@ static void kvmppc_core_vcpu_free_hv(struct kvm_vcpu *vcpu)
 	unpin_vpa(vcpu->kvm, &vcpu->arch.slb_shadow);
 	unpin_vpa(vcpu->kvm, &vcpu->arch.vpa);
 	spin_unlock(&vcpu->arch.vpa_update_lock);
-	kvm_vcpu_uninit(vcpu);
 }
 
 static int kvmppc_core_check_requests_hv(struct kvm_vcpu *vcpu)

arch/powerpc/kvm/book3s_pr.c

@@ -1744,22 +1744,17 @@ static int kvmppc_set_one_reg_pr(struct kvm_vcpu *vcpu, u64 id,
 	return r;
 }
 
-static int kvmppc_core_vcpu_create_pr(struct kvm *kvm, struct kvm_vcpu *vcpu,
-				      unsigned int id)
+static int kvmppc_core_vcpu_create_pr(struct kvm_vcpu *vcpu)
 {
 	struct kvmppc_vcpu_book3s *vcpu_book3s;
 	unsigned long p;
 	int err;
 
-	err = kvm_vcpu_init(vcpu, kvm, id);
-	if (err)
-		return err;
-
 	err = -ENOMEM;
 
 	vcpu_book3s = vzalloc(sizeof(struct kvmppc_vcpu_book3s));
 	if (!vcpu_book3s)
-		goto uninit_vcpu;
+		goto out;
 	vcpu->arch.book3s = vcpu_book3s;
 
 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
@@ -1814,8 +1809,7 @@ static int kvmppc_core_vcpu_create_pr(struct kvm *kvm, struct kvm_vcpu *vcpu,
 free_vcpu3s:
 #endif
 	vfree(vcpu_book3s);
-uninit_vcpu:
-	kvm_vcpu_uninit(vcpu);
+out:
 	return err;
 }
 
@@ -1824,7 +1818,6 @@ static void kvmppc_core_vcpu_free_pr(struct kvm_vcpu *vcpu)
 	struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu);
 
 	free_page((unsigned long)vcpu->arch.shared & PAGE_MASK);
-	kvm_vcpu_uninit(vcpu);
 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
 	kfree(vcpu->arch.shadow_vcpu);
 #endif

arch/powerpc/kvm/booke.c

@@ -2114,10 +2114,9 @@ int kvmppc_core_init_vm(struct kvm *kvm)
 	return kvm->arch.kvm_ops->init_vm(kvm);
 }
 
-int kvmppc_core_vcpu_create(struct kvm *kvm, struct kvm_vcpu *vcpu,
-			    unsigned int id)
+int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu)
 {
-	return kvm->arch.kvm_ops->vcpu_create(kvm, vcpu, id);
+	return vcpu->kvm->arch.kvm_ops->vcpu_create(vcpu);
 }
 
 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)

arch/powerpc/kvm/e500.c

@@ -433,23 +433,16 @@ static int kvmppc_set_one_reg_e500(struct kvm_vcpu *vcpu, u64 id,
 	return r;
 }
 
-static int kvmppc_core_vcpu_create_e500(struct kvm *kvm, struct kvm_vcpu *vcpu,
-					unsigned int id)
+static int kvmppc_core_vcpu_create_e500(struct kvm_vcpu *vcpu)
 {
 	struct kvmppc_vcpu_e500 *vcpu_e500;
 	int err;
 
 	BUILD_BUG_ON(offsetof(struct kvmppc_vcpu_e500, vcpu) != 0);
 	vcpu_e500 = to_e500(vcpu);
 
-	err = kvm_vcpu_init(vcpu, kvm, id);
-	if (err)
-		return err;
-
-	if (kvmppc_e500_id_table_alloc(vcpu_e500) == NULL) {
-		err = -ENOMEM;
-		goto uninit_vcpu;
-	}
+	if (kvmppc_e500_id_table_alloc(vcpu_e500) == NULL)
+		return -ENOMEM;
 
 	err = kvmppc_e500_tlb_init(vcpu_e500);
 	if (err)
@@ -467,8 +460,6 @@ static int kvmppc_core_vcpu_create_e500(struct kvm *kvm, struct kvm_vcpu *vcpu,
 	kvmppc_e500_tlb_uninit(vcpu_e500);
 uninit_id:
 	kvmppc_e500_id_table_free(vcpu_e500);
-uninit_vcpu:
-	kvm_vcpu_uninit(vcpu);
 	return err;
 }
 
@@ -479,7 +470,6 @@ static void kvmppc_core_vcpu_free_e500(struct kvm_vcpu *vcpu)
 	free_page((unsigned long)vcpu->arch.shared);
 	kvmppc_e500_tlb_uninit(vcpu_e500);
 	kvmppc_e500_id_table_free(vcpu_e500);
-	kvm_vcpu_uninit(vcpu);
 }
 
 static int kvmppc_core_init_vm_e500(struct kvm *kvm)

arch/powerpc/kvm/e500mc.c

@@ -301,25 +301,20 @@ static int kvmppc_set_one_reg_e500mc(struct kvm_vcpu *vcpu, u64 id,
 	return r;
 }
 
-static int kvmppc_core_vcpu_create_e500mc(struct kvm *kvm, struct kvm_vcpu *vcpu,
-					  unsigned int id)
+static int kvmppc_core_vcpu_create_e500mc(struct kvm_vcpu *vcpu)
 {
 	struct kvmppc_vcpu_e500 *vcpu_e500;
 	int err;
 
 	BUILD_BUG_ON(offsetof(struct kvmppc_vcpu_e500, vcpu) != 0);
 	vcpu_e500 = to_e500(vcpu);
 
-	err = kvm_vcpu_init(vcpu, kvm, id);
-	if (err)
-		return err;
-
 	/* Invalid PIR value -- this LPID dosn't have valid state on any cpu */
 	vcpu->arch.oldpir = 0xffffffff;
 
 	err = kvmppc_e500_tlb_init(vcpu_e500);
 	if (err)
-		goto uninit_vcpu;
+		return err;
 
 	vcpu->arch.shared = (void *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
 	if (!vcpu->arch.shared) {
@@ -331,8 +326,6 @@ static int kvmppc_core_vcpu_create_e500mc(struct kvm *kvm, struct kvm_vcpu *vcpu
 
 uninit_tlb:
 	kvmppc_e500_tlb_uninit(vcpu_e500);
-uninit_vcpu:
-	kvm_vcpu_uninit(vcpu);
 	return err;
 }
 
@@ -342,7 +335,6 @@ static void kvmppc_core_vcpu_free_e500mc(struct kvm_vcpu *vcpu)
 
 	free_page((unsigned long)vcpu->arch.shared);
 	kvmppc_e500_tlb_uninit(vcpu_e500);
-	kvm_vcpu_uninit(vcpu);
 }
 
 static int kvmppc_core_init_vm_e500mc(struct kvm *kvm)

arch/powerpc/kvm/powerpc.c

@@ -729,14 +729,20 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
 	if (!vcpu)
 		return ERR_PTR(-ENOMEM);
 
-	err = kvmppc_core_vcpu_create(kvm, vcpu, id);
+	err = kvm_vcpu_init(vcpu, kvm, id);
 	if (err)
 		goto free_vcpu;
 
+	err = kvmppc_core_vcpu_create(vcpu);
+	if (err)
+		goto uninit_vcpu;
+
 	vcpu->arch.wqp = &vcpu->wq;
 	kvmppc_create_vcpu_debugfs(vcpu, id);
 	return vcpu;
 
+uninit_vcpu:
+	kvm_vcpu_uninit(vcpu);
 free_vcpu:
 	kmem_cache_free(kvm_vcpu_cache, vcpu);
 	return ERR_PTR(err);
@@ -770,6 +776,8 @@ void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
 
 	kvmppc_core_vcpu_free(vcpu);
 
+	kvm_vcpu_uninit(vcpu);
+
 	kmem_cache_free(kvm_vcpu_cache, vcpu);
 }