Looking at the source code, does it always grumble about this if running on a
multicore athlon?
/*LINTED*/
993 if (cpuid_opteron_erratum(cpu, 131) > 0) do {
994 /*
995 * Multiprocessor Systems with Four or More Cores May
Deadlock
996 * Waiting for a Probe Response
997 */
998 #if defined(OPTERON_ERRATUM_131)
999 uint64_t nbcfg;
1000 const uint_t msr = MSR_AMD_NB_CFG;
1001 const uint64_t wabits =
1002 AMD_NB_CFG_SRQ_HEARTBEAT | AMD_NB_CFG_SRQ_SPR;
1003 int error;
1004
1005 /*
1006 * Erratum 131 applies to any system with four or more
cores.
1007 */
1008 if (opteron_erratum_131)
1009 break;
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