@Tarun Gupta

Is 
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/kinetic/commit/?h=master-next&id=e605d68b8accf43430144999e8206dd8511d135f
 still needed in v6.2 kernel. It no longer applies, and there has been a lot of 
work by @nvidia.com people on the driver in question (nicolinc kwankhede jgg)

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https://bugs.launchpad.net/bugs/1988806

Title:
  Add support for mdev_set_iommu_device() kABI in Ubuntu 22.10 kernel

Status in linux package in Ubuntu:
  Incomplete
Status in linux-hwe-5.19 package in Ubuntu:
  Invalid
Status in linux source package in Jammy:
  Invalid
Status in linux-hwe-5.19 source package in Jammy:
  Fix Released
Status in linux source package in Kinetic:
  Fix Released
Status in linux-hwe-5.19 source package in Kinetic:
  Invalid
Status in linux source package in Lunar:
  Incomplete
Status in linux-hwe-5.19 source package in Lunar:
  Invalid

Bug description:
  With below commit in 5.16 upstream kernel, support for
  mdev_set_iommu_device() kABI was removed from kernel as there were no
  in-tree drivers making use of the kABI.

  fda49d97f2c4 ("vfio: remove the unused mdev iommu hook")

  This kABI is used by SRIOV based Nvidia vGPU on Ubuntu 22.04. Ampere+
  (SRIOV based) Nvidia vGPU use kernel's mdev framework and use this
  kABI to pin all guest memory during VM boot.

  As HWE kernel (for Ubuntu 22.04) will switch to 5.19 upstream kernel,
  it will not include this kABI and as a result will break SRIOV based
  Nvidia vGPU. So, filing this bug to request to have a custom patch in
  HWE kernel which doesn't remove the support for
  mdev_set_iommu_device() kABI.

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