[PATCH 15/17] iommu: remove DOMAIN_ATTR_NESTING

[Tian, Kevin]

> From: Auger Eric
> Sent: Monday, March 15, 2021 3:52 PM
> To: Christoph Hellwig <hch at lst.de>
> Cc: kvm at vger.kernel.org; Will Deacon <will at kernel.org>; linuxppc-
> dev at lists.ozlabs.org; dri-devel at lists.freedesktop.org; Li Yang
> <leoyang.li at nxp.com>; iommu at lists.linux-foundation.org;
> 
> Hi Christoph,
> 
> On 3/14/21 4:58 PM, Christoph Hellwig wrote:
> > On Sun, Mar 14, 2021 at 11:44:52AM +0100, Auger Eric wrote:
> >> As mentionned by Robin, there are series planning to use
> >> DOMAIN_ATTR_NESTING to get info about the nested caps of the iommu
> (ARM
> >> and Intel):
> >>
> >> [Patch v8 00/10] vfio: expose virtual Shared Virtual Addressing to VMs
> >> patches 1, 2, 3
> >>
> >> Is the plan to introduce a new domain_get_nesting_info ops then?
> >
> > The plan as usual would be to add it the series adding that support.
> > Not sure what the merge plans are - if the series is ready to be
> > merged I could rebase on top of it, otherwise that series will need
> > to add the method.
> OK I think your series may be upstreamed first.
> 

Agree. The vSVA series is still undergoing a refactor according to Jason's
comment thus won't be ready in short term. It's better to let this one
go in first.

Thanks
Kevin