From: Cornelia Huck <cohuck@redhat.com>
To: Jason Gunthorpe <jgg@nvidia.com>
Cc: Alex Williamson <alex.williamson@redhat.com>,
Jonathan Corbet <corbet@lwn.net>,
kvm@vger.kernel.org, Kirti Wankhede <kwankhede@nvidia.com>,
linux-doc@vger.kernel.org, "Raj, Ashok" <ashok.raj@intel.com>,
Dan Williams <dan.j.williams@intel.com>,
Christoph Hellwig <hch@lst.de>,
Leon Romanovsky <leonro@nvidia.com>,
Max Gurtovoy <mgurtovoy@nvidia.com>,
Tarun Gupta <targupta@nvidia.com>
Subject: Re: [PATCH 03/18] vfio/mdev: Simplify driver registration
Date: Tue, 30 Mar 2021 17:28:38 +0200 [thread overview]
Message-ID: <20210330172838.0a2c30a7.cohuck@redhat.com> (raw)
In-Reply-To: <3-v1-7dedf20b2b75+4f785-vfio2_jgg@nvidia.com>
On Tue, 23 Mar 2021 14:55:20 -0300
Jason Gunthorpe <jgg@nvidia.com> wrote:
> This is only done once, we don't need to generate code to initialize a
> structure stored in the ELF .data segment. Fill in the three required
> .driver members directly instead of copying data into them during
> mdev_register_driver().
>
> Further the to_mdev_driver() function doesn't belong in a public header,
> just inline it into the two places that need it. Finally, we can now
> clearly see that 'drv' derived from dev->driver cannot be NULL, firstly
> because the driver core forbids it, and secondly because NULL won't pass
> through the container_of(). Remove the dead code.
>
> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
> ---
> Documentation/driver-api/vfio-mediated-device.rst | 5 +----
> drivers/vfio/mdev/mdev_driver.c | 15 +++++++--------
> drivers/vfio/mdev/vfio_mdev.c | 8 ++++++--
> include/linux/mdev.h | 6 +-----
> 4 files changed, 15 insertions(+), 19 deletions(-)
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
next prev parent reply other threads:[~2021-03-30 15:29 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-23 17:55 [PATCH 00/18] Make vfio_mdev type safe Jason Gunthorpe
2021-03-23 17:55 ` [PATCH 01/18] vfio/mdev: Fix missing static's on MDEV_TYPE_ATTR's Jason Gunthorpe
2021-03-23 17:55 ` [PATCH 02/18] vfio/mdev: Add missing typesafety around mdev_device Jason Gunthorpe
2021-03-26 2:04 ` Tian, Kevin
2021-03-30 15:24 ` Cornelia Huck
2021-03-23 17:55 ` [PATCH 03/18] vfio/mdev: Simplify driver registration Jason Gunthorpe
2021-03-23 19:14 ` Christoph Hellwig
2021-03-26 12:10 ` Jason Gunthorpe
2021-03-26 12:55 ` Christoph Hellwig
2021-03-26 2:17 ` Tian, Kevin
2021-03-30 15:28 ` Cornelia Huck [this message]
2021-03-23 17:55 ` [PATCH 04/18] vfio/mdev: Use struct mdev_type in struct mdev_device Jason Gunthorpe
2021-03-23 19:15 ` Christoph Hellwig
2021-03-26 2:29 ` Tian, Kevin
2021-04-06 18:41 ` Jason Gunthorpe
2021-03-30 15:31 ` Cornelia Huck
2021-03-23 17:55 ` [PATCH 05/18] vfio/mdev: Do not allow a mdev_type to have a NULL parent pointer Jason Gunthorpe
2021-03-23 19:15 ` Christoph Hellwig
2021-04-06 16:08 ` Jason Gunthorpe
2021-03-26 2:38 ` Tian, Kevin
2021-03-29 8:42 ` Max Gurtovoy
2021-03-30 15:34 ` Cornelia Huck
2021-03-23 17:55 ` [PATCH 06/18] vfio/mdev: Expose mdev_get/put_parent to mdev_private.h Jason Gunthorpe
2021-03-23 19:16 ` Christoph Hellwig
2021-03-26 2:47 ` Tian, Kevin
2021-03-30 15:37 ` Cornelia Huck
2021-03-23 17:55 ` [PATCH 07/18] vfio/mdev: Add missing reference counting to mdev_type Jason Gunthorpe
2021-03-23 19:17 ` Christoph Hellwig
2021-03-26 2:52 ` Tian, Kevin
2021-03-30 15:38 ` Cornelia Huck
2021-03-23 17:55 ` [PATCH 08/18] vfio/mdev: Reorganize mdev_device_create() Jason Gunthorpe
2021-03-23 19:20 ` Christoph Hellwig
2021-03-26 3:33 ` Tian, Kevin
2021-03-26 3:36 ` Tian, Kevin
2021-04-06 16:40 ` Jason Gunthorpe
2021-03-26 3:31 ` Tian, Kevin
2021-03-30 15:50 ` Cornelia Huck
2021-03-23 17:55 ` [PATCH 09/18] vfio/mdev: Add missing error handling to dev_set_name() Jason Gunthorpe
2021-03-23 19:21 ` Christoph Hellwig
2021-03-26 3:35 ` Tian, Kevin
2021-03-29 8:50 ` Max Gurtovoy
2021-03-30 15:53 ` Cornelia Huck
2021-03-23 17:55 ` [PATCH 10/18] vfio/mdev: Remove duplicate storage of parent in mdev_device Jason Gunthorpe
2021-03-23 19:22 ` Christoph Hellwig
2021-03-26 3:53 ` Tian, Kevin
2021-03-26 11:53 ` Jason Gunthorpe
2021-03-30 16:14 ` Cornelia Huck
2021-03-30 16:50 ` Jason Gunthorpe
2021-03-30 16:15 ` Cornelia Huck
2021-03-23 17:55 ` [PATCH 11/18] vfio/mdev: Add mdev/mtype_get_type_group_id() Jason Gunthorpe
2021-03-23 19:23 ` Christoph Hellwig
2021-04-06 18:53 ` Jason Gunthorpe
2021-03-26 5:52 ` Tian, Kevin
2021-03-30 16:26 ` Cornelia Huck
2021-03-23 17:55 ` [PATCH 12/18] vfio/mtty: Use mdev_get_type_group_id() Jason Gunthorpe
2021-03-23 19:24 ` Christoph Hellwig
2021-03-23 17:55 ` [PATCH 13/18] vfio/mdpy: " Jason Gunthorpe
2021-03-23 19:25 ` Christoph Hellwig
2021-03-23 17:55 ` [PATCH 14/18] vfio/mbochs: " Jason Gunthorpe
2021-03-23 19:25 ` Christoph Hellwig
2021-03-23 17:55 ` [PATCH 17/18] vfio/mdev: Remove kobj from mdev_parent_ops->create() Jason Gunthorpe
2021-03-23 19:29 ` Christoph Hellwig
2021-03-26 6:11 ` Tian, Kevin
2021-03-30 16:29 ` Cornelia Huck
2021-03-23 17:55 ` [PATCH 18/18] vfio/mdev: Correct the function signatures for the mdev_type_attributes Jason Gunthorpe
2021-03-23 19:31 ` Christoph Hellwig
2021-04-06 18:34 ` Jason Gunthorpe
2021-03-26 7:03 ` Tian, Kevin
2021-03-30 16:35 ` Cornelia Huck
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