On Tue, Sep 8, 2020 at 7:36 PM Borislav Petkov <b...@alien8.de> wrote: > > On Tue, Sep 08, 2020 at 07:29:11PM +0200, Jason A. Donenfeld wrote: > > Well that's not cool. > > So you're saying that if someone wants to kill its box by poking at that > MSR, we should just let her/him? > > If anything, I think that a BIG FAT WARNING at least would make sense.
Are you prepared to track down all the MSRs that might maybe do something naughty? After determining optimal voltages, people have systemd running intel-undervolt for them. It becomes part of the normal system configuration, is applied all the time, and after figuring it out once, users forget they ever had enabled it, except when observing that their laptop works better than it originally did. Does `dd` warn when you run `dd if=/dev/zero of=/dev/sda`? > Now, if there were a proper interface which would allow only valid > commands, now that would be optimal... Probably not possible. Optimal values are related to the "silicon lottery" that occurs when you buy a new CPU. Different optimal values for different individual chips.