Re: [RFC] /dev/ioasid uAPI proposal

[Lu Baolu]

On 6/1/21 2:09 AM, Jason Gunthorpe wrote:
> > > device bind should fail if the device somehow isn't compatible with
> > > the scheme the user is tring to use.
> > yeah, I guess you mean to fail the device attach when the IOASID is a
> > nesting IOASID but the device is behind an iommu without nesting support.
> > right?
> Right..
>   

Just want to confirm...

Does this mean that we only support hardware nesting and don't want to
have soft nesting (shadowed page table in kernel) in IOASID?

Best regards,
baolu