This protocol is using an old style where read/writes to memory were
being done by writing to a DataBlock in a DirectoryMemory entry. This
results in having multiple copies of memory, leads to stale copies in at
least one memory (usually DRAM), and require --access-backing-store in
most cases to work properly. This changeset removes all references to
getDirectoryEntry(...).DataBlk and instead forwards those reads and
writes to DRAM always.
Change-Id: If2e52151789ad82c7b55c8fa2b41c1f4e5b65994
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/57409
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
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