Bug 426057 - NMI code does not support AMD family 0x6
Summary: NMI code does not support AMD family 0x6
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel
Version: 5.2
Hardware: All
OS: Linux
low
low
Target Milestone: rc
: ---
Assignee: Bhavna Sarathy
QA Contact: Red Hat Kernel QE team
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2007-12-18 02:09 UTC by Qian Cai
Modified: 2009-05-01 16:41 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2009-05-01 16:41:09 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
/proc/cpuinfo (402 bytes, text/plain)
2007-12-18 02:09 UTC, Qian Cai 		no flags Details
uname -ra (114 bytes, text/plain)
2007-12-18 02:10 UTC, Qian Cai 		no flags Details
/proc/interrupts (588 bytes, text/plain)
2007-12-18 02:11 UTC, Qian Cai 		no flags Details
dmesg when nmi_watchdog=1 (13.70 KB, text/plain)
2007-12-18 02:11 UTC, Qian Cai 		no flags Details
dmesg when nmi_watchdog=2 (13.67 KB, text/plain)
2007-12-18 02:11 UTC, Qian Cai 		no flags Details
View All

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.
Note You need to log in before you can comment on or make changes to this bug.