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From:   Michael Ellerman <mpe@ellerman.id.au>
To:     Jason Gunthorpe <jgg@nvidia.com>,
        Alexey Kardashevskiy <aik@ozlabs.ru>
Cc:     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>
Subject: Re: [PATCH kernel 0/3] powerpc/iommu: Add iommu_ops to report
 capabilities and allow blocking domains
In-Reply-To: <YxFMWs3c+m/rubVk@nvidia.com>
References: <20220714081822.3717693-1-aik@ozlabs.ru>
 <YxFMWs3c+m/rubVk@nvidia.com>
Date:   Fri, 02 Sep 2022 17:33:30 +1000
Message-ID: <87tu5qtelx.fsf@mpe.ellerman.id.au>
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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.

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

cheers