I assume you mean home assistant operating system? If the only thing you are running on the laptop is HA.OS, you can safely ignore that error in almost all cases, the main threat would be virtualized addons, and only if the communicate with an external host, and only if they are malicious, and honestly there are far easier ways to attack HA than MDS, so I would just ignore the message.
Disabling SMT still does not fix MDS, it only makes it harder, and SMT does not double performance, on average you may loose 15-20% not 50%, though it can have a higher max performance hit on a cpu with 1 physical core, like it sounds you have.
if it is actually turning off smt using a kernel config flag, you need to modify the bootloader config file to make it permanent, or if you can get a terminal window you can do:
Thanks.
I’ve tried a cat before : it’s allready on.
But during the boot process, the MDS bug is detected and only 1 CPU core is activated.
And i suppose that modifying bootloader config file in HASS.OS is not allowed.
I’ve another anoying with the laptop : the integrated LCD panel is allways on …