Sergei,

On Sat, 21 Oct 2023 at 14:56, Sergei Golubchik <serg@mariadb.org
These are two completely different issues. How changes are synchronized
and how atomicity is implemented.
 
If a processor issues a bus lock, then it won't need E in MESI. 

--
Yours truly,
Nikita Malyavin