MFSR and MFAR messages (asynchronous memory fault)
2007-12-25 11:05:00
This list is so fast, that I can write a summary 7 hours after asking
my question.
Thanks to:
simon.millard
Sun System Admin (no real name there)
Pete and Nancy Joyce
Original question:
Where is a reference for MFAR/MFSR-numbers
Answer:
>http://sunsolve.sun.com/private-cgi/us/doc2html?infodoc/15510+90718278126680
>
>INFODOC ID: 15510
>
>SYNOPSIS: mfsr mfar numbers & troubleshooting
>DETAIL DESCRIPTION:
>
>EXAMPLE:(COULD BE ANY SPARC SYSTEM)
>
>ss5 with 4 32MB simms installed.
>
>and you get the following type of error message...
>
>
>Aug 9 01:22:10 wsplcp7 unix: panic: asynchronous memory fault:
>MFSR=80802820 MFAR=6190710
>
>
>The useful bit here is the Memory Fault Address Register, MFAR. This
>register contains the physical address of the faulting location. Open
>your FE Handbook, Volume I to CONFIGURATIONS, CPU, and then the SS5 page
>and refer to the SIMM sockets for the SPARCstation 5 CPU board. Compare
>the address in the MFAR, 0x06190710, to the address ranges depicted there
>and you'll see that it falls in the range of 0x06000000 to 0x07ffffff which
>corresponds to J0303.
>
>example of SS5 memory slot layout:
>
>J0403 SIMM7 RAS 7 0e000000 - 0ffffff
>J0402 SIMM6 RAS 6 0c000000 - 0dfffff
>J0401 SIMM5 RAS 5 0a000000 - 0bfffff
>J0400 SIMM4 RAS 4 08000000 - 09fffff
>J0303 SIMM3 RAS 3 06000000 - 07fffff ** 0x06190710 falls here
>J0302 SIMM2 RAS 2 04000000 - 05fffff
>J0301 SIMM1 RAS 1 02000000 - 03fffff
>J0300 SIMM0 RAS 0 0e000000 - 01fffff
>
>SOLUTION SUMMARY:
>
>
>
>PRODUCT AREA: System Administration
>PRODUCT: Device config
>SUNOS RELEASE: n/a
>HARDWARE: Sun 4m
Stephan.
--
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Fraunhofer-Institut fuer Software- und Systemtechnik (ISST)
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