diff options
| author | attilio <attilio@FreeBSD.org> | 2011-06-06 21:38:39 +0000 |
|---|---|---|
| committer | attilio <attilio@FreeBSD.org> | 2011-06-06 21:38:39 +0000 |
| commit | fcefe479fe42ec2ebc4b56d9161b88a659dfb40b (patch) | |
| tree | 7f8a8e666aaf8b4a8bd8609c5ec45698db6451d5 /sys/amd64/amd64/mp_machdep.c | |
| parent | 8e66ca1ff16b21df31a40fa743f8df3844507305 (diff) | |
| parent | c8e197a2037e17686f997232419f8b02d1e61ffc (diff) | |
| download | FreeBSD-src-fcefe479fe42ec2ebc4b56d9161b88a659dfb40b.zip FreeBSD-src-fcefe479fe42ec2ebc4b56d9161b88a659dfb40b.tar.gz | |
MFC
Diffstat (limited to 'sys/amd64/amd64/mp_machdep.c')
| -rw-r--r-- | sys/amd64/amd64/mp_machdep.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/sys/amd64/amd64/mp_machdep.c b/sys/amd64/amd64/mp_machdep.c index 9e20f95..d72afd6 100644 --- a/sys/amd64/amd64/mp_machdep.c +++ b/sys/amd64/amd64/mp_machdep.c @@ -242,8 +242,11 @@ topo_probe_0x4(void) * logical processors that belong to the same core * as BSP thus deducing number of threads per core. */ - cpuid_count(0x04, 0, p); - max_cores = ((p[0] >> 26) & 0x3f) + 1; + if (cpu_high >= 0x4) { + cpuid_count(0x04, 0, p); + max_cores = ((p[0] >> 26) & 0x3f) + 1; + } else + max_cores = 1; core_id_bits = mask_width(max_logical/max_cores); if (core_id_bits < 0) return; |
