RE: [PATCH v2] vfio: fix deadlock between group lock and kvm lock

[Tian, Kevin]

> From: Liu, Yi L <yi.l.liu@xxxxxxxxx>
> Sent: Thursday, February 2, 2023 11:47 AM
> > >  	ret = vfio_device_open(device, device->group->iommufd,
> > >  			       device->group->kvm);
> >
> > We're using device->group->kvm outside of kvm_ref_lock here, it should
> > be using device->kvm.
> 
> Existing code set device->kvm in the vfio_device_first_open() which is
> called by vfio_device_open(). After above change, seems not necessary
> to pass kvm pointer into the call chain. Isn't it?
> 

Looks so.