Bug 2038794

Summary:	Backport futex_waitv() from Linux 5.16
Product:	Red Hat Enterprise Linux 9	Reporter:	Neal Gompa <ngompa13>
Component:	kernel	Assignee:	Joel Savitz <jsavitz>
kernel sub component:	Locking	QA Contact:	Chunyu Hu <chuhu>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	unspecified
Priority:	unspecified	CC:	bstinson, carl, cschalle, davdunc, davide, jsavitz, jwboyer, llong, michel
Version:	CentOS Stream	Keywords:	Triaged
Target Milestone:	rc
Target Release:	9.1
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	kernel-5.14.0-77.el9	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	2086946 (view as bug list)		Environment:
Last Closed:	2022-11-15 10:52:35 UTC	Type:	Feature Request
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:	2086946

Description Neal Gompa 2022-01-10 06:33:12 UTC

Description of problem:
Linux 5.16 introduces the new futex_waitv(2) syscall, which allows to wait on multiple futexes with a single system call. This syscall is designed to work similarly to Windows NT's WaitForMultipleObjects API, which helps improve performance for applications running in Wine on Linux.

Please consider backporting this, so that Wine and other applications can take advantage of this functionality in RHEL 9.

Version-Release number of selected component (if applicable):
5.14.0-39.el9

Comment 1 Waiman Long 2022-01-10 15:19:23 UTC

The current RHEL9/Centos-Stream9 code base is based mostly on v5.15 with some 5.16 code mixed in. There is no current plan to backport the futex_waitv(2) code for the RHEL9.0 release as it will complicate our RT kernel work. Will get it into the next RHEL9.1 release instead.

Comment 2 Neal Gompa 2022-01-10 17:28:07 UTC

That's fine with me. I just wanted to get this on the radar so we have a timeline for it.

Comment 12 errata-xmlrpc 2022-11-15 10:52:35 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 (Moderate: 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-2022:8267