[20.10 FEAT] KVM: Enable Channel Path Handling for vfio-ccw (kernel)

Bug #1887931 reported by bugproxy
12
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Ubuntu on IBM z Systems
Fix Released
High
Skipper Bug Screeners
linux (Ubuntu)
Fix Released
Undecided
Skipper Bug Screeners

Bug Description

Without support for channel path handling changes in the host's channel path for underlying CCW devices may go unnoticed by the guest. This could cause erroneous operation and lead to a crashing guest. Therefore it is necessary to ensure proper handling of channel paths in vfio-ccw, like passing through channel path operations and notification of channel path changes.

Business Case:
Enhance RAS characteristics of guests using passed-through CCW devices.

Feature request for kernel.
Target kernel >= 5.9, therefore backport required

bugproxy (bugproxy)
tags: added: architecture-s39064 bugnameltc-186729 severity-high targetmilestone-inin2010
Changed in ubuntu:
assignee: nobody → Skipper Bug Screeners (skipper-screen-team)
affects: ubuntu → linux (Ubuntu)
Revision history for this message
Frank Heimes (fheimes) wrote :

Changing to Incomplete until code got upstream released (and potential backport was made available, in case cherry-pick is not possible).
Please notice that this can be very tight in time for groovy, since you mentioned that the code will land in "kernel >= 5.9".

Changed in ubuntu-z-systems:
status: New → Incomplete
importance: Undecided → High
assignee: nobody → Skipper Bug Screeners (skipper-screen-team)
Frank Heimes (fheimes)
summary: - [20.10 FEAT[KVM: Enable Channel Path Handling for vfio-ccw (kernel)
+ [20.10 FEAT [KVM: Enable Channel Path Handling for vfio-ccw (kernel)
summary: - [20.10 FEAT [KVM: Enable Channel Path Handling for vfio-ccw (kernel)
+ [20.10 FEAT] KVM: Enable Channel Path Handling for vfio-ccw (kernel)
Revision history for this message
bugproxy (bugproxy) wrote : Comment bridged from LTC Bugzilla

------- Comment From <email address hidden> 2020-09-01 02:49 EDT-------
Feature is already available with kernel 5.8

Revision history for this message
Frank Heimes (fheimes) wrote :

Okay, so since Kernel 5.8 migrated meanwhile from groovy proposed to main,
I'm now updating the status to Fix Released and closing this ticket.

Changed in linux (Ubuntu):
status: New → Fix Released
Changed in ubuntu-z-systems:
status: Incomplete → Fix Released
Revision history for this message
bugproxy (bugproxy) wrote :

------- Comment From <email address hidden> 2020-09-02 06:27 EDT-------
IBM Buzgilla status->closed, Fix Released with groovy

Frank Heimes (fheimes)
information type: Private → Public
To post a comment you must log in.
This report contains Public information  
Everyone can see this information.

Other bug subscribers