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| author | Anthony Gutierrez <atgutier@umich.edu> | 2013-11-15 13:21:15 -0500 |
|---|---|---|
| committer | Anthony Gutierrez <atgutier@umich.edu> | 2013-11-15 13:21:15 -0500 |
| commit | 8a53da22c2f07aed924a45ab296f7468d842d7f6 (patch) | |
| tree | 14f1df0a4b3aa217840384e3dee2ce53270e570d /configs/common | |
| parent | f028da7af7792bec226372ef23c1d103ad68ad30 (diff) | |
| download | gem5-8a53da22c2f07aed924a45ab296f7468d842d7f6.tar.xz | |
cpu: allow the fetch buffer to be smaller than a cache line
the current implementation of the fetch buffer in the o3 cpu
is only allowed to be the size of a cache line. some
architectures, e.g., ARM, have fetch buffers smaller than a cache
line, see slide 22 at:
http://www.arm.com/files/pdf/at-exploring_the_design_of_the_cortex-a15.pdf
this patch allows the fetch buffer to be set to values smaller
than a cache line.
Diffstat (limited to 'configs/common')
| -rw-r--r-- | configs/common/O3_ARM_v7a.py | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/configs/common/O3_ARM_v7a.py b/configs/common/O3_ARM_v7a.py index 10d466419..aedafaf4d 100644 --- a/configs/common/O3_ARM_v7a.py +++ b/configs/common/O3_ARM_v7a.py @@ -119,6 +119,7 @@ class O3_ARM_v7a_3(DerivO3CPU): commitToRenameDelay = 1 commitToIEWDelay = 1 fetchWidth = 3 + fetchBufferSize = 16 fetchToDecodeDelay = 3 decodeWidth = 3 decodeToRenameDelay = 2 |