[Bug 269228] coretemp: incorrect tjmax for desktop and server Core 2 Duo/Xeon 51xx 2 cores 65nm (Conroe, Woodcrest, possible Allen dale): 85°C, but must be 100°C
Date: Sun, 29 Jan 2023 17:03:48 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=269228
--- Comment #1 from VVD <vvd@unislabs.com> ---
Oh, look here:
if (usemsr_ee) {
err = rdmsr_safe_on_cpu(id, 0xee, &eax, &edx);
if (err) {
dev_warn(dev,
"Unable to access MSR 0xEE, for Tjmax, left"
" at default\n");
} else if (eax & 0x40000000) {
tjmax = tjmax_ee;
}
} else if (tjmax == 100000) {
/*
* If we don't use msr EE it means we are desktop CPU
* (with exeception of Atom)
*/
dev_warn(dev, "Using relative temperature scale!\n");
}
So on desktop CPU not need to use MSR 0xEE (MSR_IA32_EXT_CONFIG) at all.
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