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