Re: [PATCH kernel v4 0/4] powerpc/spapr/vfio: Put pages on VFIO container shutdown

[Alex Williamson <alex.williamson@redhat.com>]

On Tue, 08 Nov 2016 18:54:28 +1100
Michael Ellerman <mpe@ellerman.id.au> wrote:

> Alexey Kardashevskiy <aik@ozlabs.ru> writes:
> > These patches are to fix a bug when pages stay pinned hours
> > after QEMU which requested pinning exited.
> >
> > Please comment. Thanks.
> >
> > Alexey Kardashevskiy (4):
> >   powerpc/iommu: Pass mm_struct to init/cleanup helpers
> >   powerpc/iommu: Stop using @current in mm_iommu_xxx
> >   vfio/spapr: Reference mm in tce_container
> >   powerpc/mm/iommu, vfio/spapr: Put pages on VFIO container shutdown
> >
> >  arch/powerpc/include/asm/mmu_context.h |  20 ++--
> >  arch/powerpc/kernel/setup-common.c     |   2 +-
> >  arch/powerpc/mm/mmu_context_book3s64.c |   6 +-
> >  arch/powerpc/mm/mmu_context_iommu.c    |  60 ++++-------
> >  drivers/vfio/vfio_iommu_spapr_tce.c    | 181 ++++++++++++++++++++++-----------
> >  5 files changed, 154 insertions(+), 115 deletions(-)  
> 
> 
> Alex, given the diffstat how do you want to merge this? (for 4.10)
> 
> Should I merge it, you merge it, or I can put it in a topic branch?

I have an outstanding question on one patch, but otherwise I'd prefer
you merge it, I'm not expecting to have anything that would conflict
with vfio_iommu_spapr_tce.c and this code is tied pretty tightly with
arch code.  I'll provide acks depending on how we resolve my question.
Thanks,

Alex