[coreboot] Re: Microcode update in coreboot on Intel HT enabled CPUs

[Nico Huber]

On 08.10.19 09:50, Patrick Rudolph wrote:
> The "Bios Writers Guide" (Document Number 504790 / 550049) states
>
> that microcode must be done on all threads, but synchronized between
> sibling threads to only update one at a time.

A minor correction: BWGs from Ivy Bridge on (including 550049) simply
state that it can be done in parallel (and dropped the synchronization
clause).

Nico