On 05/03/2021 09:50, Jan Beulich wrote:
> Linux has been warning ("firmware bug") about this bit being clear for a
> long time. While writable in older hardware it has been readonly on more
> than just most recent hardware. For simplicitly report it always set (if
> anything we may want to log the issue ourselves if it turns out to be
> clear on older hardware).
>
> Signed-off-by: Jan Beulich <jbeul...@suse.com>

I realise Linux is complaining, but simply setting the bit isn't a fix.

This needs corresponding updates in the ACPI tables, as well as Pstate
MSRs, or Linux will derive a false relationship between the TSC rate and
wallclock.

~Andrew


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