Bug 125971
| Summary: | [PATCH] EL3 U4: ia32e smp Kernel doesn't bringup cpus with apicid >= 8 | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 3 | Reporter: | Suresh Siddha <suresh.b.siddha> | ||||
| Component: | kernel | Assignee: | Jim Paradis <jparadis> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Brock Organ <borgan> | ||||
| Severity: | high | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 3.0 | CC: | peterm, petrides, tao | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | ia32e | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2004-12-20 20:55:20 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: | |||||||
| Bug Blocks: | 123574 | ||||||
| Attachments: |
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Created attachment 101118 [details]
Patch fixing the problem
During smpboot, attached patch will now enable the kernel to kick processors
with apicid>8
A fix for this problem has just been committed to the RHEL3 U4 patch pool this evening (in kernel version 2.4.21-20.14.EL). An errata 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 the 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/RHBA-2004-550.html |
From Bugzilla Helper: User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0) Description of problem: RH EL3 U2/U3 kernels doesn't bringup the secondary cpus whose apicid is greater than 8. smpboot.c code assumes the apicid of all the secondary processors will be less than 8. There are some Intel MP platforms in development(4-way, 8 with HT) which will runinto this problem. On such systems apic id's of the processors are not sequential. And so some of the processors apciids will be greater than 8. On such systems when we boot RHEL3 kernel, we will see only those processors with apicid<8 after bootup. We don't see all 8 processors up and running as desired. This problem is fixed in 2.6 base, when ia32e support is added. Version-Release number of selected component (if applicable): kernel-2.4.21-15.EL How reproducible: Always Steps to Reproduce: 1.Boot EL3 on a system which as some of the processors apic id > 8 2.You will see only those processors which has apicid < 8 up and running 3. Additional info: