Changed nosmt=force to mitigations=auto,nosmt to ensure performance isn't...

Changed nosmt=force to mitigations=auto,nosmt to ensure performance isn't degraded for unimpacted CPUs

base_configs/etc/default/grub

@@ -3,7 +3,7 @@
 GRUB_DEFAULT=0
 GRUB_TIMEOUT=5
 GRUB_DISTRIBUTOR="PlagueOS"
-GRUB_CMDLINE_LINUX_DEFAULT="intel_iommu=on amd_iommu=on iommu=force slub_debug=FZ pti=on spectre_v2=on spec_store_bypass_disable=on tsx=off tsx_async_abort=full kvm.nx_huge_pages=force mce=0 rd.luks.uuid=#CRYPTUUID# root=UUID=#ROOTUUID# l1tf=flush mds=full quiet debugfs=off"
+GRUB_CMDLINE_LINUX_DEFAULT="intel_iommu=on amd_iommu=on iommu=force slub_debug=FZ pti=on spectre_v2=on spec_store_bypass_disable=on tsx=off tsx_async_abort=full kvm.nx_huge_pages=force mce=0 rd.luks.uuid=#CRYPTUUID# root=UUID=#ROOTUUID# l1tf=flush mds=full mitigations=auto,nosmt quiet debugfs=off"
 GRUB_CMDLINE_LINUX=""
 
 # Preload both GPT and MBR modules so that they are not missed