This bug is awaiting verification that the linux-
nvidia-6.2/6.2.0-1010.10 kernel in -proposed solves the problem. Please
test the kernel and update this bug with the results. If the problem is
solved, change the tag 'verification-needed-jammy-linux-nvidia-6.2' to
'verification-done-jammy-linux-nvidia-6.2'. If the problem still exists,
change the tag 'verification-needed-jammy-linux-nvidia-6.2' to
'verification-failed-jammy-linux-nvidia-6.2'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-jammy-linux-nvidia-6.2-v2 
verification-needed-jammy-linux-nvidia-6.2

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https://bugs.launchpad.net/bugs/2022354

Title:
  sysfs msi_irqs directory empty with kernel-5.19 when being a xen guest

Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Kinetic:
  Won't Fix
Status in linux source package in Lunar:
  Fix Committed

Bug description:
  == SRU Justification ==

  Impact: See below

  Fix: Upstream commit from v6.4-rc4 cherry-picked into 5.19 and 6.2

  Test case: Check of sysfs running Xen.

  Regression potential: Change adds additional calls to populate sysfs
  related to MSI devices. Any issues would be withing those limits.

  --- Original Description ---

  Let's say you launch a Xen-based EC2 instance with enhanced
  networking, then under kernel-5.19 you'll not see anything under

  $ ls /sys/class/net/ens3/device/msi_irqs/

  This can be fixed by backporting
  
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=335b4223466dd75f9f3ea4918187afbadd22e5c8
  (It got already backported to 6.1 and 6.3)

  With this patch applied, you'll correctly see the sysfs files:

  $ ls /sys/class/net/ens3/device/msi_irqs/
  690  691  692  693  694  695  696  697  698

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