[Bug 192487] cpucontrol uses unsafe procedure to detect current microcode version

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=192487

--- Comment #8 from Stefan B. <sblachmann at gmail.com> ---
Ed, this would be great.

May I point you at another issue: in the current implementation, the
eval_cpu_features system call output from cpuctl.ko goes to the console,
spamming a half screenful of information - for each and every core again. This
can be a *lot* of dmesg spam.

I would be willing to address this too when merging-in Dan's suggested changes.

Warner suggested that cpupdate being put on phabricator, but I haven't heard
from him for a while. He seems very busy and told me that my initial reply got
into his spam folder somehow. Could you maybe cc him and ask him whether he got
my email from April 24th?

What about putting cpupdate, the updated cpuctl and cpucontrol on phabricator
then, so these can be reviewed together?

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