I had a laptop that got a huge performance hit from the kernel fix that "fixed" spectre. It rendered the laptop garbage. I was thinking to reuse that laptop simply for music / news / surfing as a work alternative laptop. I looked into if it was possible to turn off the spectre fixes and if it was possible to check if the fixes were in (or they came up with a faster fix). Found that you can check if it's being "fixed" with lscpu. And a grub flag can tell the kernel to turn them off.
https://leochavez.org/index.php/2020/11/16/disabling-intel-and-amd-cpu-vulnerability-mitigations/
I had a laptop that got a *huge* performance hit from the kernel fix that "fixed" spectre. It rendered the laptop garbage. I was thinking to reuse that laptop simply for music / news / surfing as a work alternative laptop. I looked into if it was possible to turn off the spectre fixes and if it was possible to check if the fixes were in (or they came up with a faster fix). Found that you can check if it's being "fixed" with lscpu. And a grub flag can tell the kernel to turn them off.
https://leochavez.org/index.php/2020/11/16/disabling-intel-and-amd-cpu-vulnerability-mitigations/
(post is archived)