L1TF CPU bug present and SMT on as observed on a Supermicro X10SL7-F


It just tells you that you have Hyper-Threading (SMT) enabled, which means that a malicious guest VM could theoretically access confidential data on the host (as described in the kernel.org link you posted).

This is a hardware flaw on intel systems, and can (as far as I’m aware) only be mitigated by disabling Hyper-Threading (SMT), usually done in BIOS. Keep in mind that this incurs a (potentially hefty) performance penalty.





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