From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jason Gunthorpe <jgg@nvidia.com>
Date: Fri, 02 Sep 2022 11:46:19 +0000
Subject: Re: [PATCH kernel 0/3] powerpc/iommu: Add iommu_ops to report capabilities and allow blocking domain
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References: <20220714081822.3717693-1-aik@ozlabs.ru>
 <YxFMWs3c+m/rubVk@nvidia.com>
 <87tu5qtelx.fsf@mpe.ellerman.id.au>
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To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, kvm-ppc@vger.kernel.org, Deming Wang <wangdeming@inspur.com>, Robin Murphy <robin.murphy@arm.com>, Alex Williamson <alex.williamson@redhat.com>, Daniel Henrique Barboza <danielhb413@gmail.com>, Fabiano Rosas <farosas@linux.ibm.com>, Murilo Opsfelder Araujo <muriloo@linux.ibm.com>, Nicholas Piggin <npiggin@gmail.com>

On Fri, Sep 02, 2022 at 05:33:30PM +1000, Michael Ellerman wrote:
> Jason Gunthorpe <jgg@nvidia.com> writes:
> > On Thu, Jul 14, 2022 at 06:18:19PM +1000, Alexey Kardashevskiy wrote:
> >> Here is another take on iommu_ops on POWER to make VFIO work
> >> again on POWERPC64.
> >> 
> >> The tree with all prerequisites is here:
> >> https://github.com/aik/linux/tree/kvm-fixes-wip
> >> 
> >> The previous discussion is here:
> >> https://patchwork.ozlabs.org/project/linuxppc-dev/patch/20220707135552.3688927-1-aik@ozlabs.ru/
> >> https://patchwork.ozlabs.org/project/kvm-ppc/patch/20220701061751.1955857-1-aik@ozlabs.ru/
> >> 
> >> Please comment. Thanks.
> >>
> >> 
> >> 
> >> Alexey Kardashevskiy (3):
> >>   powerpc/iommu: Add "borrowing" iommu_table_group_ops
> >>   powerpc/pci_64: Init pcibios subsys a bit later
> >>   powerpc/iommu: Add iommu_ops to report capabilities and allow blocking
> >>     domains
> >
> > It has been a little while - and I think this series is still badly
> > needed by powerpc, right?
> 
> Your comments on patch 3 left me with the impression it needed a respin,
> but maybe I misread that.

It would be nice, but I understand Alexey will not work on it anymore,
so I wouldn't object to as-is

> Alexey's reply that it needed testing also made me think it wasn't
> ready to pick up.

Well, if so, someone still needs to finish this work. But I think he
tested it, he fixed things that could have only been found by
testing..

Jason