[Gems-users] MOESI state transitions

[Edward Lee <edwl202@xxxxxxxxx>]

Hi,

In MOESI_SMP_directory protocol, after an L2 replacement E state
issues a PUTX. As far as I know, E state has the clean data which
means memory also has the most recent copy. So, why not just do like
what S state does in this scenario which is, r(Deallocate L2 cache
block. Sets the cache to not present, allowing a replacement in
parallel with a fetch) and then go to I state?

Any ideas?

Regards,

Ed