This splits kvmppc_core_vcpu_create_hv() into three functions and
adds a new kvmppc_free_vcores() to free the kvmppc_vcore structures
that we allocate for a guest, which are currently being leaked.
The reason for the split is to make the split-out code available
for later use in converting PR kvm_vcpu structs to HV use.
Signed-off-by: Paul Mackerras <pau...@samba.org>
---
arch/powerpc/kvm/book3s_hv.c | 95 +++++++++++++++++++++++++++-----------------
1 file changed, 59 insertions(+), 36 deletions(-)
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 13f79dd..c524d6b 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -891,32 +891,51 @@ int kvmppc_set_one_reg_hv(struct kvm_vcpu *vcpu, u64 id,
return r;
}
-struct kvm_vcpu *kvmppc_core_vcpu_create_hv(struct kvm *kvm, unsigned int id)
+static int kvmppc_alloc_vcore(struct kvm_vcpu *vcpu, unsigned int id)
{
- struct kvm_vcpu *vcpu;
- int err = -EINVAL;
- int core;
+ struct kvm *kvm = vcpu->kvm;
struct kvmppc_vcore *vcore;
+ int core;
core = id / threads_per_core;
if (core >= KVM_MAX_VCORES)
- goto out;
+ return -EINVAL;
- err = -ENOMEM;
- vcpu = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
- if (!vcpu)
- goto out;
+ vcore = kvm->arch.vcores[core];
+ if (!vcore) {
+ vcore = kzalloc(sizeof(struct kvmppc_vcore), GFP_KERNEL);
+ if (!vcore)
+ return -ENOMEM;
+ INIT_LIST_HEAD(&vcore->runnable_threads);
+ spin_lock_init(&vcore->lock);
+ init_waitqueue_head(&vcore->wq);
+ vcore->preempt_tb = TB_NIL;
+ kvm->arch.vcores[core] = vcore;
+ kvm->arch.online_vcores++;
+ }
- err = kvm_vcpu_init(vcpu, kvm, id);
- if (err)
- goto free_vcpu;
+ spin_lock(&vcore->lock);
+ ++vcore->num_threads;
+ spin_unlock(&vcore->lock);
+ vcpu->arch.vcore = vcore;
+
+ return 0;
+}
+static void kvmppc_free_vcores(struct kvm *kvm)
+{
+ long int i;
+
+ for (i = 0; i < KVM_MAX_VCORES; ++i)
+ kfree(kvm->arch.vcores[i]);
+ kvm->arch.online_vcores = 0;
+}
+
+static void kvmppc_setup_hv_vcpu(struct kvm_vcpu *vcpu)
+{
vcpu->arch.shared = &vcpu->arch.shregs;
vcpu->arch.mmcr[0] = MMCR0_FC;
vcpu->arch.ctrl = CTRL_RUNLATCH;
- /* default to host PVR, since we can't spoof it */
- vcpu->arch.pvr = mfspr(SPRN_PVR);
- kvmppc_set_pvr_hv(vcpu, vcpu->arch.pvr);
spin_lock_init(&vcpu->arch.vpa_update_lock);
spin_lock_init(&vcpu->arch.tbacct_lock);
vcpu->arch.busy_preempt = TB_NIL;
@@ -927,31 +946,34 @@ struct kvm_vcpu *kvmppc_core_vcpu_create_hv(struct kvm
*kvm, unsigned int id)
init_waitqueue_head(&vcpu->arch.cpu_run);
- mutex_lock(&kvm->lock);
- vcore = kvm->arch.vcores[core];
- if (!vcore) {
- vcore = kzalloc(sizeof(struct kvmppc_vcore), GFP_KERNEL);
- if (vcore) {
- INIT_LIST_HEAD(&vcore->runnable_threads);
- spin_lock_init(&vcore->lock);
- init_waitqueue_head(&vcore->wq);
- vcore->preempt_tb = TB_NIL;
- }
- kvm->arch.vcores[core] = vcore;
- kvm->arch.online_vcores++;
- }
- mutex_unlock(&kvm->lock);
+ vcpu->arch.cpu_type = KVM_CPU_3S_64;
+ kvmppc_sanity_check(vcpu);
+}
- if (!vcore)
+struct kvm_vcpu *kvmppc_core_vcpu_create_hv(struct kvm *kvm, unsigned int id)
+{
+ struct kvm_vcpu *vcpu;
+ int err = -EINVAL;
+
+ err = -ENOMEM;
+ vcpu = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
+ if (!vcpu)
+ goto out;
+
+ err = kvm_vcpu_init(vcpu, kvm, id);
+ if (err)
goto free_vcpu;
- spin_lock(&vcore->lock);
- ++vcore->num_threads;
- spin_unlock(&vcore->lock);
- vcpu->arch.vcore = vcore;
+ /* default to host PVR, since we can't spoof it */
+ vcpu->arch.pvr = mfspr(SPRN_PVR);
- vcpu->arch.cpu_type = KVM_CPU_3S_64;
- kvmppc_sanity_check(vcpu);
+ mutex_lock(&kvm->lock);
+ err = kvmppc_alloc_vcore(vcpu, id);
+ mutex_unlock(&kvm->lock);
+ if (err)
+ goto free_vcpu;
+
+ kvmppc_setup_hv_vcpu(vcpu);
return vcpu;
@@ -1890,6 +1912,7 @@ void kvmppc_core_destroy_vm_hv(struct kvm *kvm)
{
uninhibit_secondary_onlining();
+ kvmppc_free_vcores(kvm);
if (kvm->arch.rma) {
kvm_release_rma(kvm->arch.rma);
kvm->arch.rma = NULL;
--
1.8.3.1
--
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