On Thu, Apr 14, 2022 at 03:46:03PM -0300, Jason Gunthorpe wrote: > kvm and VFIO need to be coupled together however neither is willing to > tolerate a direct module dependency. Instead when kvm is given a VFIO FD > it uses many symbol_get()'s to access VFIO. > > Provide a single VFIO function vfio_file_get_ops() which validates the > given struct file * is a VFIO file and then returns a struct of ops. > > Following patches will redo each of the symbol_get() calls into an > indirection through this ops struct. So I got anoyed at this as well a while ago and I still think this is the wrong way around. I'd much rather EXPORT_SYMBOL_GPL kvm_register_device_ops and just let kvm_vfio_ops live in a module than all the symbol_get crazyness. We'll need to be careful to deal with unload races or just not allow unloading, though.
