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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2011-05-23 10:33:05 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-07-12 11:45:08 +0300 |
| commit | d780592b99d7d8a5ff905f6bacca519d4a342c76 (patch) | |
| tree | b1779fdd8dfef925161ff804582b5377c0f86cd8 /virt/kvm | |
| parent | d462b8192368f10e979250377930f9695a4039d0 (diff) | |
| download | lwn-d780592b99d7d8a5ff905f6bacca519d4a342c76.tar.gz lwn-d780592b99d7d8a5ff905f6bacca519d4a342c76.zip | |
KVM: Clean up error handling during VCPU creation
So far kvm_arch_vcpu_setup is responsible for freeing the vcpu struct if
it fails. Move this confusing resonsibility back into the hands of
kvm_vm_ioctl_create_vcpu. Only kvm_arch_vcpu_setup of x86 is affected,
all other archs cannot fail.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt/kvm')
| -rw-r--r-- | virt/kvm/kvm_main.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 087b3f8ca46e..fa2321ac77cc 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1615,18 +1615,18 @@ static int kvm_vm_ioctl_create_vcpu(struct kvm *kvm, u32 id) r = kvm_arch_vcpu_setup(vcpu); if (r) - return r; + goto vcpu_destroy; mutex_lock(&kvm->lock); if (atomic_read(&kvm->online_vcpus) == KVM_MAX_VCPUS) { r = -EINVAL; - goto vcpu_destroy; + goto unlock_vcpu_destroy; } kvm_for_each_vcpu(r, v, kvm) if (v->vcpu_id == id) { r = -EEXIST; - goto vcpu_destroy; + goto unlock_vcpu_destroy; } BUG_ON(kvm->vcpus[atomic_read(&kvm->online_vcpus)]); @@ -1636,7 +1636,7 @@ static int kvm_vm_ioctl_create_vcpu(struct kvm *kvm, u32 id) r = create_vcpu_fd(vcpu); if (r < 0) { kvm_put_kvm(kvm); - goto vcpu_destroy; + goto unlock_vcpu_destroy; } kvm->vcpus[atomic_read(&kvm->online_vcpus)] = vcpu; @@ -1650,8 +1650,9 @@ static int kvm_vm_ioctl_create_vcpu(struct kvm *kvm, u32 id) mutex_unlock(&kvm->lock); return r; -vcpu_destroy: +unlock_vcpu_destroy: mutex_unlock(&kvm->lock); +vcpu_destroy: kvm_arch_vcpu_destroy(vcpu); return r; } |