Bug 2011963

Summary:	Add the ability to detect CXL-attached hardware
Product:	Red Hat Enterprise Linux 9	Reporter:	Peter Rival <frival>
Component:	tuned	Assignee:	Jaroslav Škarvada <jskarvad>
Status:	CLOSED WONTFIX	QA Contact:	Robin Hack <rhack>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	9.0	CC:	bgray, ctatman, dshaks, jeder, jmario, jskarvad, jzerdik
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
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Last Closed:	2023-04-07 07:28:01 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Description Peter Rival 2021-10-07 19:41:12 UTC

A partner has suggested they are seeing indications they would like to tune automatically based on whether CXL-attached devices are present in the system.  Currently this is focused on cxl.mem devices but could extend beyond in the future.  The significant difference in latency and bandwidth of cxl.mem devices vs. "normal" DRAM mean some tunings might need to be changed.  Theoretically this could also happen down the road on systems with some combination of HBM, DRAM, and cxl.mem, but that's another bz.

Comment 2 RHEL Program Management 2023-04-07 07:28:01 UTC

After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.