Hi Alex, On 09/06/2017 23:59, Alex Williamson wrote: > Unset-KVM and decrement-assignment only when we find the group in our > list. Otherwise we can get out of sync if the user triggers this for > groups that aren't currently on our list. > > Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx> > Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx> > --- > virt/kvm/vfio.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) This patch and 3/7 do not apply on 4.12-rc5 as there are small conflicts with commit 121f80ba68f1a5779a36d7b3247206e60e0a7418 KVM: PPC: VFIO: Add in-kernel acceleration for VFIO Besides Reviewed-by: Eric Auger <eric.auger@xxxxxxxxxx> Thanks Eric > > diff --git a/virt/kvm/vfio.c b/virt/kvm/vfio.c > index d32f239eb471..db9036ef8c73 100644 > --- a/virt/kvm/vfio.c > +++ b/virt/kvm/vfio.c > @@ -201,18 +201,16 @@ static int kvm_vfio_set_group(struct kvm_device *dev, long attr, u64 arg) > continue; > > list_del(&kvg->node); > + kvm_arch_end_assignment(dev->kvm); > + kvm_vfio_group_set_kvm(kvg->vfio_group, NULL); > kvm_vfio_group_put_external_user(kvg->vfio_group); > kfree(kvg); > ret = 0; > break; > } > > - kvm_arch_end_assignment(dev->kvm); > - > mutex_unlock(&kv->lock); > > - kvm_vfio_group_set_kvm(vfio_group, NULL); > - > kvm_vfio_group_put_external_user(vfio_group); > > kvm_vfio_update_coherency(dev); >
