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authorNikos Nikoleris <nikos.nikoleris@arm.com>2017-12-14 17:36:09 +0000
committerNikos Nikoleris <nikos.nikoleris@arm.com>2018-02-07 16:11:31 +0000
commita1fc8b7ecdbadc3e9116594ed0803d2ed2612670 (patch)
tree64512c48e41b70270040c26ad492b707aca1b084 /src/mem/protocol/Garnet_standalone-dir.sm
parent7798ffb6948d12c7f2bc63dc9a3263bb19aa3297 (diff)
downloadgem5-a1fc8b7ecdbadc3e9116594ed0803d2ed2612670.tar.xz
mem-cache: Cleaned blocks should be marked as not writable
A writeclean packet writes a dirty block to the memory below and therefore sets the dirty flag for the block when the memory below is a cache. If the block was also marked as writable it can satisfy future write requests without further requests/snoops. This can lead to multiple copies of the same block marked as dirty which is not allowed. This changeset clears the writable flag from the cleaned block to prevent the cache from satisfying future write requests without sending a downstream request. Change-Id: I14d3c62fd33f81b1a8ba62374c8565ccab00a6fe Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/7821 Maintainer: Jason Lowe-Power <jason@lowepower.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Diffstat (limited to 'src/mem/protocol/Garnet_standalone-dir.sm')
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