linux-kernel - Re: [PATCH v1 02/14] vfio: Update vfio_add_group

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Message-ID: <20210310074838.GA662265@infradead.org>
Date:   Wed, 10 Mar 2021 07:48:38 +0000
From:   Christoph Hellwig <hch@...radead.org>
To:     Alex Williamson <alex.williamson@...hat.com>
Cc:     cohuck@...hat.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, jgg@...dia.com, peterx@...hat.com
Subject: Re: [PATCH v1 02/14] vfio: Update vfio_add_group_dev() API

On Mon, Mar 08, 2021 at 02:47:40PM -0700, Alex Williamson wrote:
> Rather than an errno, return a pointer to the opaque vfio_device
> to allow the bus driver to call into vfio-core without additional
> lookups and references.  Note that bus drivers are still required
> to use vfio_del_group_dev() to teardown the vfio_device.
> 
> Signed-off-by: Alex Williamson <alex.williamson@...hat.com>

This looks like it is superseded by the

  vfio: Split creation of a vfio_device into init and register ops

patch from Jason, which provides a much nicer API.