this post was submitted on 26 Aug 2023
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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That first link is still whole generations of CPUs I believe, all the way back to K10 from 2007. Wikichip has a table to convert the hex to generation.
And the microcode usually gets patched by Linux, so why does the BIOS matter? (I'm aware it can be disabled, but why would you)
Take an example at the Cezanne CPU from your link, https://en.wikichip.org/wiki/amd/cores/cezanne AMD CPU Family 19h, Model 50h. There is 26 CPUs from 2021. Check the microcode update at https://salsa.debian.org/hmh/amd64-microcode/-/blob/main/amd-ucode/README there is no model 0x50.
AMD can release microcode to integrator/OEM who put it in their BIOS. But giving it to linux community? super rare. People have to know that AMD do not release microcode, I don't know why people think that the hundreds of AMD CPUs get new microcode every time there's an update?!?
Fair enough