Bug 426057

Summary: NMI code does not support AMD family 0x6
Product: Red Hat Enterprise Linux 5 Reporter: Qian Cai <qcai>
Component: kernelAssignee: Bhavna Sarathy <bnagendr>
Status: CLOSED WONTFIX QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: low Docs Contact:
Priority: low    
Version: 5.2CC: arozansk, bnagendr, duck, dzickus, mchehab, prarit
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2009-05-01 16:41:09 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:
Attachments:
Description Flags
/proc/cpuinfo
none
uname -ra
none
/proc/interrupts
none
dmesg when nmi_watchdog=1
none
dmesg when nmi_watchdog=2 none

Description Qian Cai 2007-12-18 02:09:31 UTC 
Description of problem:
NMI watchdog does not work for machines with AMD family 0x6 processors.

Version-Release number of selected component (if applicable):
RHEL5.2-Server-20071217.nightly
Not work for the latest 4.6.z kernel (2.6.9-67.0.1) too.

How reproducible:
always

Steps to Reproduce:
reserved athlon3.rhts.boston.redhat.com (i386) from RHTS. Booted it with either
nmi_watchdog=1 or nmi_watchdog=2.
  
Actual results:
NMI count is always zero in /proc/interrupts, and also the following appeared in
dmesg,

powernow-k8: Processor cpuid 621 not supported
Testing NMI watchdog ... CPU#0: NMI appears to be stuck (0->0)!

Expected results:
NMI count should be increment.

Additional info:
See attachments for /proc/cpuinfo, /proc/interrupts, uname -ra, and dmesg.
Comment 1 Qian Cai 2007-12-18 02:09:31 UTC 
Created attachment 289838 [details]
/proc/cpuinfo
Comment 2 Qian Cai 2007-12-18 02:10:40 UTC 
Created attachment 289839 [details]
uname -ra
Comment 3 Qian Cai 2007-12-18 02:11:09 UTC 
Created attachment 289840 [details]
/proc/interrupts
Comment 4 Qian Cai 2007-12-18 02:11:36 UTC 
Created attachment 289841 [details]
dmesg when nmi_watchdog=1
Comment 5 Qian Cai 2007-12-18 02:11:59 UTC 
Created attachment 289842 [details]
dmesg when nmi_watchdog=2
Comment 10 Prarit Bhargava 2007-12-18 16:21:36 UTC 
Bhavana, AFAWCT family 0x6 + NMI has never worked.  Did AMD put an explicit
request in to get this working?

I thought the earlier bugs were for family 15 & 16 ...

P.
Comment 11 Qian Cai 2009-05-01 16:41:09 UTC 
I'll close this one out due to NMI on this old type of processor seems never working before.