Description of problem:
Latest rt56 real time kernel on Intel i9 has broken TSC
Feb 20 06:55:24 uk01ds300 kernel: tsc: Detected 2600.000 MHz processor
Feb 20 06:55:24 uk01ds300 kernel: TSC synchronization [CPU#0 -> CPU#1]:
Feb 20 06:55:24 uk01ds300 kernel: Measured 115899160216746 cycles TSC warp between CPUs, turning off TSC clock.
Feb 20 06:55:24 uk01ds300 kernel: tsc: Marking TSC unstable due to check_tsc_sync_source failed
Version-Release number of selected component (if applicable):
Red Hat Enterprise MRG Realtime 2.5
model name : Intel(R) Core(TM) i9-7980XE CPU @ 2.60GHz
100% at every boot
Steps to Reproduce:
1. Boot into 3.10.0-693.17.1.rt56.604.el6rt.x86_64
TSC clock turns off.
TSC clock to work correctly.
The issue seems to be fixed in upstream.
It is ok, Thanks!
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.