Public bug reported:
Description: s390x/s390-virtio-ccw: Reset PCI devices during subsystem reset
Symptom: PCI devices are unavailable after a subsystem reset
Problem: When a subsystem reset event occurs (e.g. via kexec) PCI
devices are not being reset and are therefore in an
unexpected state when the guest attempts to enable them
again after the subsystem reset. This results in the devices
being unavailable to the guest until a reboot.
Solution: Add the s390 PCI host bridge to the list of devices to be
reset during a subsystem reset event
Reproduction: kexec on an s390x guest with PCI devices
db08244a3a7e s390x/s390-virtio-ccw: Reset PCI devices during subsystem
reset
This fix need to be applied to qemu for focal (20.04) and groovy
(20.10).
** Affects: qemu (Ubuntu)
Importance: Undecided
Assignee: Skipper Bug Screeners (skipper-screen-team)
Status: New
** Tags: architecture-s39064 bugnameltc-190224 severity-high
targetmilestone-inin---
** Tags added: architecture-s39064 bugnameltc-190224 severity-high
targetmilestone-inin---
** Changed in: ubuntu
Assignee: (unassigned) => Skipper Bug Screeners (skipper-screen-team)
** Package changed: ubuntu => qemu (Ubuntu)
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https://bugs.launchpad.net/bugs/1907656
Title:
[UBUNTU 21.04] s390x/s390-virtio-ccw: Reset PCI devices during
subsystem reset
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