diff options
Diffstat (limited to 'usr/src/uts/intel/ia32/os/cpc_subr.c')
| -rw-r--r-- | usr/src/uts/intel/ia32/os/cpc_subr.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/usr/src/uts/intel/ia32/os/cpc_subr.c b/usr/src/uts/intel/ia32/os/cpc_subr.c index b15c57a8e5..f7b86fd602 100644 --- a/usr/src/uts/intel/ia32/os/cpc_subr.c +++ b/usr/src/uts/intel/ia32/os/cpc_subr.c @@ -20,6 +20,7 @@ */ /* * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright 2019 Joyent, Inc. */ /* @@ -139,6 +140,12 @@ kcpc_hw_init(cpu_t *cp) strands_perfmon_shared = 1; } } + } else if (cpuid_getvendor(cpu[0]) == X86_VENDOR_AMD) { + /* + * On AMD systems with HT, all of the performance + * monitors exist on a per-logical CPU basis. + */ + strands_perfmon_shared = 0; } else { strands_perfmon_shared = 1; } |