BIOS Microcode Patch Erratum 131 Warning Message

Warning Message: BIOS microcode patch for AMD Athlon(TM) 64/Opteron(TM) processor erratum 131 was not detected

Problem

During Solaris boot, a warning message is issued that a workaround for the AMD Opteron Erratum 131 is needed.

Solaris AMD x64 support includes a boot-time check for the presence of a BIOS workaround for the AMD Erratum 131. If the SolarisTM Operating System detects that the workaround for Erratum 131 is needed but it is not yet implemented, Solaris logs and displays the following warning message:

WARNING: BIOS microcode patch for AMD Athlon(tm) 64/Opteron(tm) processor erratum 131 was not detected; updating your system’s BIOS to a version containing this microcode patch is HIGHLY recommended or erroneous system operation may occur.

Impacted OS: Solaris 10 6/06 and 11/06

Impacted Hardware: X8420 and X8440 Server Modules

Workaround

The Sun Blade X8420 and X8440 Server Modules System BIOS implements a superset workaround (as recommended by AMD) that includes the workaround required for Erratum 131. Therefore, you can safely ignore this warning message.