[REGRESSION][v6.8-rc1] virtio-pci: Introduce admin virtqueue

From: Joseph Salisbury
Date: Fri May 03 2024 - 14:10:10 EST


Hi Feng,

During testing, a kernel bug was identified with the suspend/resume functionality on instances running in a public cloud [0].  This bug is a regression introduced in v6.8-rc1.  After a kernel bisect, the following commit was identified as the cause of the regression:

       fd27ef6b44be  ("virtio-pci: Introduce admin virtqueue")

I was hoping to get your feedback, since you are the patch author. Do you think gathering any additional data will help diagnose this issue?  This commit is depended upon by other virtio commits, so a revert test is not really straight forward without reverting all the dependencies.   Any ideas you have would be greatly appreciated.


Thanks,

Joe

http://pad.lv/2063315