diff options
| author | Jonathan Gray <jsg@cvs.openbsd.org> | 2018-03-07 01:33:08 +0000 |
|---|---|---|
| committer | Jonathan Gray <jsg@cvs.openbsd.org> | 2018-03-07 01:33:08 +0000 |
| commit | 5aed5e84d05e70c364853d2b711fd677786a9045 (patch) | |
| tree | 98aa1e24a0f32e41bf6ad2065a3d1256ee22c276 /sys | |
| parent | 4157bfe853632fd5c5114d6aa129b82ab9750e1b (diff) | |
Stop assuming intel model 0x55 'Skylake X' has a fixed 25 MHz tsc freq.
It turns out the frequency can vary between different processors that
share the same cpuid model. Similiar change made in linux.
ok mikeb@ millert@
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/amd64/amd64/tsc.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/sys/arch/amd64/amd64/tsc.c b/sys/arch/amd64/amd64/tsc.c index 466e4659e85..c86e435f63f 100644 --- a/sys/arch/amd64/amd64/tsc.c +++ b/sys/arch/amd64/amd64/tsc.c @@ -1,4 +1,4 @@ -/* $OpenBSD: tsc.c,v 1.6 2017/10/19 22:09:49 mikeb Exp $ */ +/* $OpenBSD: tsc.c,v 1.7 2018/03/07 01:33:07 jsg Exp $ */ /* * Copyright (c) 2016,2017 Reyk Floeter <reyk@openbsd.org> * Copyright (c) 2017 Adam Steen <adam@adamsteen.com.au> @@ -58,7 +58,6 @@ tsc_freq_cpuid(struct cpu_info *ci) case 0x9e: /* Kabylake desktop */ khz = 24000; /* 24.0 Mhz */ break; - case 0x55: /* Skylake X */ case 0x5f: /* Atom Denverton */ khz = 25000; /* 25.0 Mhz */ break; |