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From:   Michael Ellerman <mpe@ellerman.id.au>
To:     Alex Williamson <alex.williamson@redhat.com>
Cc:     Christoph Hellwig <hch@lst.de>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Jason Gunthorpe <jgg@nvidia.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        dri-devel@lists.freedesktop.org, Paul Mackerras <paulus@samba.org>,
        linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
        kvm@vger.kernel.org, linux-api@vger.kernel.org
Subject: Re: [PATCH 1/2] vfio/pci: remove vfio_pci_nvlink2
In-Reply-To: <20210412082304.5e7c0a80@omen>
References: <20210326061311.1497642-1-hch@lst.de>
 <20210326061311.1497642-2-hch@lst.de> <20210406133805.715120bd@omen>
 <87y2dndelm.fsf@mpe.ellerman.id.au> <20210412082304.5e7c0a80@omen>
Date:   Thu, 22 Apr 2021 23:49:31 +1000
Message-ID: <87h7jybf9w.fsf@mpe.ellerman.id.au>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

Alex Williamson <alex.williamson@redhat.com> writes:
> On Mon, 12 Apr 2021 19:41:41 +1000
> Michael Ellerman <mpe@ellerman.id.au> wrote:
>
>> Alex Williamson <alex.williamson@redhat.com> writes:
>> > On Fri, 26 Mar 2021 07:13:10 +0100
>> > Christoph Hellwig <hch@lst.de> wrote:
>> >  
>> >> This driver never had any open userspace (which for VFIO would include
>> >> VM kernel drivers) that use it, and thus should never have been added
>> >> by our normal userspace ABI rules.
>> >> 
>> >> Signed-off-by: Christoph Hellwig <hch@lst.de>
>> >> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>> >> ---
>> >>  drivers/vfio/pci/Kconfig            |   6 -
>> >>  drivers/vfio/pci/Makefile           |   1 -
>> >>  drivers/vfio/pci/vfio_pci.c         |  18 -
>> >>  drivers/vfio/pci/vfio_pci_nvlink2.c | 490 ----------------------------
>> >>  drivers/vfio/pci/vfio_pci_private.h |  14 -
>> >>  include/uapi/linux/vfio.h           |  38 +--
>> >>  6 files changed, 4 insertions(+), 563 deletions(-)
>> >>  delete mode 100644 drivers/vfio/pci/vfio_pci_nvlink2.c  
>> >
>> > Hearing no objections, applied to vfio next branch for v5.13.  Thanks,  
>> 
>> Looks like you only took patch 1?
>> 
>> I can't take patch 2 on its own, that would break the build.
>> 
>> Do you want to take both patches? There's currently no conflicts against
>> my tree. It's possible one could appear before the v5.13 merge window,
>> though it would probably just be something minor.
>> 
>> Or I could apply both patches to my tree, which means patch 1 would
>> appear as two commits in the git history, but that's not a big deal.
>
> I've already got a conflict in my next branch with patch 1, so it's
> best to go through my tree.  Seems like a shared branch would be
> easiest to allow you to merge and manage potential conflicts against
> patch 2, I've pushed a branch here:
>
> https://github.com/awilliam/linux-vfio.git v5.13/vfio/nvlink

Thanks.

My next is based on rc2, so I won't pull that in directly, because I
don't want to pull all of rc6 in with it.

I'll put it in a topic branch and merge it into my next after my first
pull has gone to Linus.

cheers