diff options
| author | Len Brown <[email protected]> | 2016-06-17 01:22:44 -0400 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2016-07-10 17:00:12 +0200 |
| commit | ba8268330dc18d309a39175ea4d2c5d86c2cef09 (patch) | |
| tree | c31c3d6907e56df464e6bdc8401d810ee7dcc80c | |
| parent | fc5f3ac24720012909c224a63ca3217f4759967d (diff) | |
x86/tsc_msr: Identify Intel-specific code
try_msr_calibrate_tsc() is currently Intel-specific,
and should not execute on any other vendor's parts.
Signed-off-by: Len Brown <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/1fe23c052826bdcfeb3d45045aa02246078cb5a7.1466138954.git.len.brown@intel.com
Signed-off-by: Ingo Molnar <[email protected]>
| -rw-r--r-- | arch/x86/kernel/tsc_msr.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/tsc_msr.c b/arch/x86/kernel/tsc_msr.c index 6aa0f4d9eea6..4ec5e560ed73 100644 --- a/arch/x86/kernel/tsc_msr.c +++ b/arch/x86/kernel/tsc_msr.c @@ -86,6 +86,9 @@ unsigned long try_msr_calibrate_tsc(void) unsigned long res; int cpu_index; + if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL) + return 0; + cpu_index = match_cpu(boot_cpu_data.x86, boot_cpu_data.x86_model); if (cpu_index < 0) return 0; |