 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Read
miss:
|
|
|
Sharers
+= {P};
|
|
|
send
Data Value Reply
|
|
|
|
|
|
|
Read
miss:
|
|
|
Sharers
= {P}
|
|
|
send
Data Value
|
|
Reply
|
|
|
|
|
|
|
|
|
|
|
|
Shared
|
|
|
(read
only)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Write
Miss:
|
|
|
Sharers
= {P};
|
|
send
Data
|
|
|
Value
Reply
|
|
|
msg
|
|
|
|
|
|
|
|
|
|
|
Write
Miss:
|
|
|
send
Invalidate
|
|
|
to
Sharers;
|
|
|
then
Sharers = {P};
|
|
send
Data Value
|
|
|
Reply
msg
|
|
|
|
|
|
|
|
Data Write Back:
|
|
|
Sharers = {}
|
|
(Write
back block)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Read
miss:
|
|
|
Sharers
+= {P};
|
|
|
send
Fetch;
|
|
|
send
Data Value Reply
|
|
msg
to remote cache
|
|
|
(Write back
block)
|
|
|
|
|
|
|
|
|
Write
Miss:
|
|
|
Sharers
= {P};
|
|
|
send
Fetch/Invalidate;
|
|
|
send
Data Value Reply
|
|
msg
to remote cache
|
|
|
|
|
|
|
|
|
|
Exclusive
|
|
|
(read/writ)
|
|
|
|
|
|
|
|
|
|
|
Advanced Computer Architecture Chapter 7.42
|
|
|
|
|
|