FYI, we noticed the below changes on
https://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux.git cpufreq
commit 1dd8e212220cdec445793afb130d1634146e70aa ("x86 tsc: Use Sklake CPUID to distinguish cpu_khz and tsc_khz")
We found the following new message in kernel log after your commit.
[ 0.000000] tsc: Fast TSC calibration failed
[ 0.000000] tsc: Fast TSC calibration failed
[ 0.000000] tsc: Unable to calibrate against PIT
[ 0.000000] tsc: Unable to calibrate against PIT
Thanks,
Ying Huang