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authorsadaszewski <s.adaszewski@gmail.com>2021-11-17 07:27:46 +0000
committerWarner Losh <imp@FreeBSD.org>2023-02-05 05:05:48 +0000
commit8362905cb69e06b8946dd582ce2c1fb67d86081a (patch)
tree9b4190f0376de48de51802341572dd779f9fa338 /cddl/contrib/opensolaris/lib/libctf/common
parent70164d957eb2d1147e0b52a4b1da45f64be8af8e (diff)
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coretemp: Only log critical temperature eventsHEADmain
According to the Intel manual https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-vol-3b-part-2-manual.pdf the Thermal Status (0) and Thermal Status Log (1) bits report only a high temperature on the CPU, not a critical temperature as suggested in the coretemp driver. Check the Critical Temperature Log (5) instead. The critical temperature waives guarantees of correct function, therefore the CPU could have for example written some wrong values into memory at that point and the OS should be stopped ASAP as the state is no longer reliable. Reviewed by: imp (confirmed descriptions of bits, linux ignores these bits) Pull Request: https://github.com/freebsd/freebsd-src/pull/562
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