[Bug 240475] [PATCH]: Add support for CPUID 0x16 in tsc_freq_cpuid() (TSC clock)

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Tue Sep 10 18:33:48 UTC 2019


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=240475

--- Comment #1 from Neel Chauhan <neel at neelc.org> ---
Fixed description:

If frequency for CPUID 0x15 is zero, fall back to CPUID 0x16 for the TSC clock
if available. This is needed on some Intel SOCs like Skylake and Kaby Lake
which report 0 for the crystal clock.

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