Re: [PATCH v2 1/7] vfio: Make vfio_(un)register_notifier accept a vfio_device

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To: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
Subject: Re: [PATCH v2 1/7] vfio: Make vfio_(un)register_notifier accept a vfio_device
From: Jason Gunthorpe <jgg@xxxxxxxxxx>
Date: Fri, 22 Apr 2022 14:07:43 -0300
Cc: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>, David Airlie <airlied@xxxxxxxx>, Alex Williamson <alex.williamson@xxxxxxxxxx>, Christian Borntraeger <borntraeger@xxxxxxxxxxxxx>, Cornelia Huck <cohuck@xxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Daniel Vetter <daniel@xxxxxxxx>, "dri-devel@xxxxxxxxxxxxxxxxxxxxx" <dri-devel@xxxxxxxxxxxxxxxxxxxxx>, Harald Freudenberger <freude@xxxxxxxxxxxxx>, Vasily Gorbik <gor@xxxxxxxxxxxxx>, Heiko Carstens <hca@xxxxxxxxxxxxx>, "intel-gfx@xxxxxxxxxxxxxxxxxxxxx" <intel-gfx@xxxxxxxxxxxxxxxxxxxxx>, "intel-gvt-dev@xxxxxxxxxxxxxxxxxxxxx" <intel-gvt-dev@xxxxxxxxxxxxxxxxxxxxx>, Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>, Jason Herne <jjherne@xxxxxxxxxxxxx>, Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>, "kvm@xxxxxxxxxxxxxxx" <kvm@xxxxxxxxxxxxxxx>, Kirti Wankhede <kwankhede@xxxxxxxxxx>, "linux-doc@xxxxxxxxxxxxxxx" <linux-doc@xxxxxxxxxxxxxxx>, "linux-s390@xxxxxxxxxxxxxxx" <linux-s390@xxxxxxxxxxxxxxx>, Matthew Rosato <mjrosato@xxxxxxxxxxxxx>, Peter Oberparleiter <oberpar@xxxxxxxxxxxxx>, Halil Pasic <pasic@xxxxxxxxxxxxx>, "Vivi, Rodrigo" <rodrigo.vivi@xxxxxxxxx>, Sven Schnelle <svens@xxxxxxxxxxxxx>, Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx>, Vineeth Vijayan <vneethv@xxxxxxxxxxxxx>, Zhenyu Wang <zhenyuw@xxxxxxxxxxxxxxx>, "Wang, Zhi A" <zhi.a.wang@xxxxxxxxx>, Tony Krowiak <akrowiak@xxxxxxxxxxxxx>, Eric Farman <farman@xxxxxxxxxxxxx>, "Liu, Yi L" <yi.l.liu@xxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>
In-reply-to: <BN9PR11MB52761D81DA24CD00E0FFA7728CF79@BN9PR11MB5276.namprd11.prod.outlook.com>
References: <0-v2-6011bde8e0a1+5f-vfio_mdev_no_group_jgg@nvidia.com> <1-v2-6011bde8e0a1+5f-vfio_mdev_no_group_jgg@nvidia.com> <BN9PR11MB52761D81DA24CD00E0FFA7728CF79@BN9PR11MB5276.namprd11.prod.outlook.com>

On Fri, Apr 22, 2022 at 01:39:09AM +0000, Tian, Kevin wrote:
> > From: Jason Gunthorpe
> > Sent: Friday, April 22, 2022 12:29 AM
> > 
> > All callers have a struct vfio_device trivially available, pass it in
> > directly and avoid calling the expensive vfio_group_get_from_dev().
> > 
> > To support the unconverted kvmgt mdev driver add
> > mdev_legacy_get_vfio_device() which will return the vfio_device pointer
> > vfio_mdev.c puts in the drv_data.
> 
> stale comment

woops, done

Thanks,
Jason

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References:
- [PATCH v2 0/7] Make the rest of the VFIO driver interface use vfio_device
  - From: Jason Gunthorpe
- [PATCH v2 1/7] vfio: Make vfio_(un)register_notifier accept a vfio_device
  - From: Jason Gunthorpe
- RE: [PATCH v2 1/7] vfio: Make vfio_(un)register_notifier accept a vfio_device
  - From: Tian, Kevin

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