diff options
Diffstat (limited to 'usr/src/uts/i86pc/os/mp_startup.c')
| -rw-r--r-- | usr/src/uts/i86pc/os/mp_startup.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/usr/src/uts/i86pc/os/mp_startup.c b/usr/src/uts/i86pc/os/mp_startup.c index 843c5ae73a..588d38bb7a 100644 --- a/usr/src/uts/i86pc/os/mp_startup.c +++ b/usr/src/uts/i86pc/os/mp_startup.c @@ -649,6 +649,10 @@ int opteron_workaround_6323525; /* if non-zero -> at least one cpu has it */ int opteron_erratum_298; #endif +#if defined(OPTERON_ERRATUM_721) +int opteron_erratum_721; +#endif + static void workaround_warning(cpu_t *cp, uint_t erratum) { @@ -1177,6 +1181,16 @@ workaround_errata(struct cpu *cpu) missing += do_erratum_298(cpu); + if (cpuid_opteron_erratum(cpu, 721) > 0) { +#if defined(OPTERON_ERRATUM_721) + wrmsr(MSR_AMD_DE_CFG, rdmsr(MSR_AMD_DE_CFG) | AMD_DE_CFG_E721); + opteron_erratum_721++; +#else + workaround_warning(cpu, 721); + missing++; +#endif + } + #ifdef __xpv return (0); #else @@ -1267,6 +1281,10 @@ workaround_errata_end() " system\noperation may occur.\n"); } #endif +#if defined(OPTERON_ERRATUM_721) + if (opteron_erratum_721) + workaround_applied(721); +#endif } /* |