diff options
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/kvm_main.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 2ffee3018a3d..c5c186af823b 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c | |||
| @@ -124,15 +124,6 @@ int vcpu_load(struct kvm_vcpu *vcpu) | |||
| 124 | 124 | ||
| 125 | if (mutex_lock_killable(&vcpu->mutex)) | 125 | if (mutex_lock_killable(&vcpu->mutex)) |
| 126 | return -EINTR; | 126 | return -EINTR; |
| 127 | if (unlikely(vcpu->pid != current->pids[PIDTYPE_PID].pid)) { | ||
| 128 | /* The thread running this VCPU changed. */ | ||
| 129 | struct pid *oldpid = vcpu->pid; | ||
| 130 | struct pid *newpid = get_task_pid(current, PIDTYPE_PID); | ||
| 131 | rcu_assign_pointer(vcpu->pid, newpid); | ||
| 132 | if (oldpid) | ||
| 133 | synchronize_rcu(); | ||
| 134 | put_pid(oldpid); | ||
| 135 | } | ||
| 136 | cpu = get_cpu(); | 127 | cpu = get_cpu(); |
| 137 | preempt_notifier_register(&vcpu->preempt_notifier); | 128 | preempt_notifier_register(&vcpu->preempt_notifier); |
| 138 | kvm_arch_vcpu_load(vcpu, cpu); | 129 | kvm_arch_vcpu_load(vcpu, cpu); |
| @@ -2050,6 +2041,15 @@ static long kvm_vcpu_ioctl(struct file *filp, | |||
| 2050 | r = -EINVAL; | 2041 | r = -EINVAL; |
| 2051 | if (arg) | 2042 | if (arg) |
| 2052 | goto out; | 2043 | goto out; |
| 2044 | if (unlikely(vcpu->pid != current->pids[PIDTYPE_PID].pid)) { | ||
| 2045 | /* The thread running this VCPU changed. */ | ||
| 2046 | struct pid *oldpid = vcpu->pid; | ||
| 2047 | struct pid *newpid = get_task_pid(current, PIDTYPE_PID); | ||
| 2048 | rcu_assign_pointer(vcpu->pid, newpid); | ||
| 2049 | if (oldpid) | ||
| 2050 | synchronize_rcu(); | ||
| 2051 | put_pid(oldpid); | ||
| 2052 | } | ||
| 2053 | r = kvm_arch_vcpu_ioctl_run(vcpu, vcpu->run); | 2053 | r = kvm_arch_vcpu_ioctl_run(vcpu, vcpu->run); |
| 2054 | trace_kvm_userspace_exit(vcpu->run->exit_reason, r); | 2054 | trace_kvm_userspace_exit(vcpu->run->exit_reason, r); |
| 2055 | break; | 2055 | break; |
