[SRU] [B/D/E/Unstable/OEM-B/OEM-OSP1-B] [PATCH 0/1] Disable unreliable HPET on CFL-H system

Kai-Heng Feng kai.heng.feng at canonical.com
Tue Nov 12 12:59:36 UTC 2019

BugLink: https://bugs.launchpad.net/bugs/1852216

TSC marked unstable by skewed HPET after Intel CFL-H SoC reached PC10

Disable HPET on CFL-H SoC.

I can confirm disabling HPET can workaround this issue.

[Regression Potential]
Low. TSC on recent Intel SoC is now an invariant clocksource, so it's
harmless to disable HPET on these platforms.

Kai-Heng Feng (1):
  UBUNTU: SAUCE: x86/intel: Disable HPET on Intel Coffe Lake H platforms

 arch/x86/kernel/early-quirks.c | 2 ++
 1 file changed, 2 insertions(+)


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