Guenter Roeck wrote: > On Tue, Sep 05, 2017 at 04:12:07PM +0200, Clemens Ladisch wrote: >> Guenter Roeck wrote: >>> What we should do then, as we did for coretemp, would be to collect the >>> various >>> temperature offsets (and temperature limits, for that matter) and apply >>> per-CPU >>> adjustments. Are the offsets documented somewhere ? >> >> AMD says: >> "Tctl is the processor temperature control value, used by the platform to >> control cooling systems. Tctl is a non-physical temperature on an >> arbitrary scale measured in degrees. It does _not_ represent an actual >> physical temperature like die or case temperature. Instead, it specifies >> the processor temperature relative to the point at which the system must >> supply the maximum cooling for the processor's specified maximum case >> temperature and maximum thermal power dissipation." > > Pretty much the same as Intel. That doesn't mean we should not (try to) report > the real temperature as good as we can, as at least most of the BIOSes do,
AFAIK the BIOSes use the thermal diode (with external circuitry) for that. > and as all the Windows tools do, and as users expect us to do. > > Do we really have to argue about this ? Looking at coretemp, this is going to be a maintenance nightmare. Oh well. If you insist, please add a proper chip-to-offset database, and apply the offset to all four values. Regards, Clemens
