Bug 2181277

Summary:	update cpuidle subsystem to Linux v6.3
Product:	Red Hat Enterprise Linux 9	Reporter:	Mark Langsdorf <mlangsdo>
Component:	kernel	Assignee:	Mark Langsdorf <mlangsdo>
kernel sub component:	Power Management	QA Contact:	Erik Hamera <ehamera>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	unspecified
Priority:	unspecified	CC:	dhorak, ehamera, rvr, shangsong2
Version:	9.3	Keywords:	Triaged, ZStream
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	kernel-5.14.0-346.el9	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	2270421 (view as bug list)		Environment:
Last Closed:	2023-11-07 08:43:10 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2159160, 2270421

Description Mark Langsdorf 2023-03-23 14:24:09 UTC

Partners are requesting that the cpuidle system be updated to match the Linux v6.3 kernel. Backport the changes from kernel v6.0 to v6.3 into the RHEL-9.3 kernel.

Comment 1 Mark Langsdorf 2023-03-23 14:30:54 UTC

*** Bug 2159210 has been marked as a duplicate of this bug. ***

Comment 6 Erik Hamera 2023-07-26 11:07:02 UTC

CPU cores are in deep C-states.

# cpupower idle-info
CPUidle driver: intel_idle
CPUidle governor: menu
analyzing CPU 0:

Number of idle states: 5
Available idle states: POLL C1 C1E C3 C6
POLL:
Flags/Description: CPUIDLE CORE POLL IDLE
Latency: 0
Usage: 156
Duration: 3297
C1:
Flags/Description: MWAIT 0x00
Latency: 2
Usage: 10958
Duration: 1659942
C1E:
Flags/Description: MWAIT 0x01
Latency: 10
Usage: 3262
Duration: 902870
C3 (DISABLED) :
Flags/Description: MWAIT 0x10
Latency: 40
Usage: 0
Duration: 0
C6:
Flags/Description: MWAIT 0x20
Latency: 133
Usage: 621772
Duration: 38894934023

Comment 10 Erik Hamera 2023-08-04 13:52:08 UTC

All regression tests has passed on the Linux 5.14.0-349.el9 kernel.

Comment 14 errata-xmlrpc 2023-11-07 08:43:10 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Important: kernel security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2023:6583

Comment 15 Dan Horák 2024-03-20 09:16:15 UTC

- acking 9.2.0.z backport of commit: 2a31a65337a9 ("powerpc/cpuidle: Set CPUIDLE_FLAG_POLLING for snooze state") based on IBM's zstream template from https://issues.redhat.com/browse/RHEL-27534

- Mark expressed no objections