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| author | Nikos Nikoleris <nikos.nikoleris@arm.com> | 2017-04-04 19:19:02 +0100 |
|---|---|---|
| committer | Nikos Nikoleris <nikos.nikoleris@arm.com> | 2017-06-13 15:53:44 +0000 |
| commit | 42e114ddefe2fbf56e7da3daccf2cfbe128242a6 (patch) | |
| tree | 0768f3383f84920e7722816e194342386d252c78 | |
| parent | 12db50c89584938839e035da47d206250cbfd7c2 (diff) | |
| download | gem5-42e114ddefe2fbf56e7da3daccf2cfbe128242a6.tar.xz | |
ruby, arm: Forward invalidations to the local exclusive monitor
ARM systems require local exclusive monitors for the implementation of
synchronization primitives between processors. A ruby memory system
needs to forward invalidations to the local exclusive monitors to
to correctly determine their state.
Change-Id: I7bc4d0f2a5be0f4e36a25c87aa4a81a3f086fb3c
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/2904
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
| -rw-r--r-- | configs/ruby/Ruby.py | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/configs/ruby/Ruby.py b/configs/ruby/Ruby.py index 71f6eef7c..04eda5a39 100644 --- a/configs/ruby/Ruby.py +++ b/configs/ruby/Ruby.py @@ -231,6 +231,8 @@ def send_evicts(options): # currently, 2 scenarios warrant forwarding evictions to the CPU: # 1. The O3 model must keep the LSQ coherent with the caches # 2. The x86 mwait instruction is built on top of coherence invalidations - if options.cpu_type == "DerivO3CPU" or buildEnv['TARGET_ISA'] == 'x86': + # 3. The local exclusive monitor in ARM systems + if options.cpu_type == "DerivO3CPU" or \ + buildEnv['TARGET_ISA'] in ('x86', 'arm'): return True return False |