Bug 489310
| Summary: | [Intel 5.4 FEAT] TSC keeps running in C3+ | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 5 | Reporter: | RHEL Program Management <pm-rhel> | |
| Component: | kernel | Assignee: | Jiri Pirko <jpirko> | |
| Status: | CLOSED ERRATA | QA Contact: | Red Hat Kernel QE team <kernel-qe> | |
| Severity: | medium | Docs Contact: | ||
| Priority: | urgent | |||
| Version: | 5.4 | CC: | dhoward, james.leddy, jane.lv, jeff.burrell, jplans, jvillalo, keve.a.gabbert, luming.yu, luyu, peterm, pm-eus, rkhan, sghosh, tao, venkatesh.pallipadi, youquan.song | |
| Target Milestone: | rc | Keywords: | ZStream | |
| Target Release: | --- | |||
| Hardware: | All | |||
| OS: | Linux | |||
| Whiteboard: | ||||
| Fixed In Version: | Doc Type: | Bug Fix | ||
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 493356 (view as bug list) | Environment: | ||
| Last Closed: | 2009-04-01 08:31:45 UTC | Type: | --- | |
| 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: | 474091 | |||
| Bug Blocks: | 493356 | |||
|
Description
RHEL Program Management
2009-03-09 12:56:33 UTC
in kernel-2.6.18-128.1.4.el5 incremental patch (474091 comment #40) in kernel-2.6.18-128.1.6.el5 RH QA captured the problem when testing the NONSTOP_TSC feature with 32-bit kernel. She found the clock source under sys fs is still HPET on hp-xw8800-01.rhts.bos.redhat.com.
Part of code got neglected from my original back port, because it doesn't appear in the corresponding Upstream commit.
And upstream still use this:
if (boot_cpu_has(X86_FEATURE_CONSTANT_TSC))
return 0;
The following incremental patch should be include to enable TSC as clock source by default in 32-bit kernel on Intel NHM and newer processors. https://bugzilla.redhat.com/show_bug.cgi?id=474091#c44 An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2009-0326.html Thanks everyone for all your work on this! As discussed in today's meeting, fix delivered. Internal Status set to 'Resolved' Status set to: Closed by Tech Interim resolution set to 'Hotfix' Resolution set to: 'Completed' Summary edited. This event sent from IssueTracker by jleddy issue 271902 |