diff options
Diffstat (limited to 'virt/kvm/kvm_main.c')
| -rw-r--r-- | virt/kvm/kvm_main.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 187aa8d984a7..e0fb0988a3fe 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1392,6 +1392,18 @@ static long kvm_vcpu_ioctl(struct file *filp, if (vcpu->kvm->mm != current->mm) return -EIO; + +#if defined(CONFIG_S390) || defined(CONFIG_PPC) + /* + * Special cases: vcpu ioctls that are asynchronous to vcpu execution, + * so vcpu_load() would break it. + */ + if (ioctl == KVM_S390_INTERRUPT || ioctl == KVM_INTERRUPT) + return kvm_arch_vcpu_ioctl(filp, ioctl, arg); +#endif + + + vcpu_load(vcpu); switch (ioctl) { case KVM_RUN: r = -EINVAL; @@ -1566,9 +1578,12 @@ out_free2: break; } default: + vcpu_put(vcpu); r = kvm_arch_vcpu_ioctl(filp, ioctl, arg); + vcpu_load(vcpu); } out: + vcpu_put(vcpu); kfree(fpu); kfree(kvm_sregs); return r; |