[PATCH] vfio: Remove VFIO_TYPE1_NESTING_IOMMU

[Jason Gunthorpe]

On Thu, May 12, 2022 at 03:07:09PM +0800, Zhangfei Gao wrote:
> > > I can't help feeling a little wary about removing this until IOMMUFD
> > > can actually offer a functional replacement - is it in the way of
> > > anything upcoming?
> >  From an upstream perspective if someone has a patched kernel to
> > complete the feature, then they can patch this part in as well, we
> > should not carry dead code like this in the kernel and in the uapi.
> > 
> > It is not directly in the way, but this needs to get done at some
> > point, I'd rather just get it out of the way.
> 
> We are using this interface for nested mode.

How are you using it? It doesn't do anything. Do you have out of tree
patches as well?

Jason