The all-important Linux Kernel-based Virtual Machine (KVM) code for open-source virtualization had mistakenly been applying its L1TF workaround for unaffected CPUs — namely AMD EPYC CPUs — for the past several months until the issue was uncovered this week…

Source: Phoronix – Linux KVM Virtualization Had Mistakenly Been Applying L1TF Workaround To Unaffected CPUs