[PATCH v2 15/45] KVM: PPC: Move kvm_vcpu_init() invocation to common code

From: Sean Christopherson
Date: Wed Dec 18 2019 - 16:59:59 EST

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 <sean.j.christopherson@xxxxxxxxx>
---
arch/powerpc/include/asm/kvm_ppc.h | 3 +--
arch/powerpc/kvm/book3s.c | 5 ++---
arch/powerpc/kvm/book3s_hv.c | 17 ++++++-----------
arch/powerpc/kvm/book3s_pr.c | 13 +++----------
arch/powerpc/kvm/booke.c | 5 ++---
arch/powerpc/kvm/e500.c | 16 +++-------------
arch/powerpc/kvm/e500mc.c | 12 ++----------
arch/powerpc/kvm/powerpc.c | 10 +++++++++-
8 files changed, 28 insertions(+), 53 deletions(-)

diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index 8f77ca5ace6f..374e4b835ff0 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/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);
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 13385656b90d..5ad20fc0c6a1 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/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 kvm->arch.kvm_ops->vcpu_create(vcpu);
}

void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 3fb41fe24f58..d3d9a03a61fd 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/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)
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index 10c65d412e81..d88f708d5be3 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/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
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 047c9f707704..dd7440e50c7a 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/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 kvm->arch.kvm_ops->vcpu_create(vcpu);
}

void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c
index 96d9cde3d2e3..942bfaa2d1d0 100644
--- a/arch/powerpc/kvm/e500.c
+++ b/arch/powerpc/kvm/e500.c
@@ -433,8 +433,7 @@ 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;
@@ -442,14 +441,8 @@ static int kvmppc_core_vcpu_create_e500(struct kvm *kvm, struct kvm_vcpu *vcpu,
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)
diff --git a/arch/powerpc/kvm/e500mc.c b/arch/powerpc/kvm/e500mc.c
index f2902e612150..fc4fe922e893 100644
--- a/arch/powerpc/kvm/e500mc.c
+++ b/arch/powerpc/kvm/e500mc.c
@@ -301,8 +301,7 @@ 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;
@@ -310,16 +309,12 @@ static int kvmppc_core_vcpu_create_e500mc(struct kvm *kvm, struct kvm_vcpu *vcpu
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)
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index fd978f681b66..173f57e0a1b5 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/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);
}

--
2.24.1