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From: Alex Williamson <alex.williamson@redhat.com>
To: kwankhede@nvidia.com
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	alex.williamson@redhat.com, cohuck@redhat.com,
	pasic@linux.ibm.com
Subject: [PATCH v4 0/2] vfio/mdev: Device namespace protection
Date: Fri, 18 May 2018 13:10:16 -0600	[thread overview]
Message-ID: <20180518190145.3187.7620.stgit@gimli.home> (raw)

v4: Fix the 'create' racing 'remove' gap noted by Kirti by moving
    removal from mdev_list to mdev_device_release().  Fix missing
    mdev_put_parent() cases in mdev_device_create(), also noted
    by Kirti.  Added documention update regarding serialization as
    noted by Cornelia.  Added additional commit log comment about
    -EAGAIN vs -ENODEV for 'remove' racing 'create'.  Added second
    patch to re-order sysfs attributes, with this my targeted
    scripts can no longer hit the gap where -EAGAIN is regurned.
    BTW, the gap where the current code returns -ENODEV in this
    race condition is about 50% easier to hit than it exists in
    this series with patch 1 alone.

Thanks,
Alex

---

Alex Williamson (2):
      vfio/mdev: Check globally for duplicate devices
      vfio/mdev: Re-order sysfs attribute creation


 Documentation/vfio-mediated-device.txt |    5 ++
 drivers/vfio/mdev/mdev_core.c          |  102 +++++++++++---------------------
 drivers/vfio/mdev/mdev_private.h       |    2 -
 drivers/vfio/mdev/mdev_sysfs.c         |   14 ++--
 4 files changed, 49 insertions(+), 74 deletions(-)

             reply	other threads:[~2018-05-18 19:10 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-18 19:10 Alex Williamson [this message]
2018-05-18 19:10 ` [PATCH v4 1/2] vfio/mdev: Check globally for duplicate devices Alex Williamson
2018-05-18 19:37   ` Kirti Wankhede
2018-05-22  8:13   ` Cornelia Huck
2018-05-22 15:53     ` Alex Williamson
2018-05-23  4:53       ` Zhenyu Wang
2018-05-18 19:10 ` [PATCH v4 2/2] vfio/mdev: Re-order sysfs attribute creation Alex Williamson
2018-05-18 19:38   ` Kirti Wankhede
2018-05-22  8:14   ` Cornelia Huck
2018-05-18 19:37 ` [PATCH v4 0/2] vfio/mdev: Device namespace protection Kirti Wankhede
2018-05-22 17:17 ` Halil Pasic
2018-05-22 18:38   ` Alex Williamson
2018-05-23  8:56     ` Cornelia Huck
2018-05-23 12:29       ` Halil Pasic
2018-05-23 13:34         ` Cornelia Huck

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