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authorNilay Vaish <nilay@cs.wisc.edu>2013-12-26 15:18:55 -0600
committerNilay Vaish <nilay@cs.wisc.edu>2013-12-26 15:18:55 -0600
commitd71311b1cfba4839a493f5e15944ed2b0f987a7d (patch)
treea7ef350ec5ac2b1350474b6bb0d8b9b6ff010313 /tests/long/fs
parentfc53f9ffcc880a5429fb41a881bc095bf200e4a4 (diff)
downloadgem5-d71311b1cfba4839a493f5e15944ed2b0f987a7d.tar.xz
ruby: fix bugs in mesi cmp directory protocol
This patch fixes couple of bugs in the L2 controller of the mesi cmp directory protocol. 1. The state MT_I was transitioning to NP on receiving a clean writeback from the L1 controller. This patch makes it inform the directory controller about the writeback. 2. The L2 controller was sending the dirty bit to the L1 controller and the L2 controller used writeback from the L1 controller to update the dirty bit unconditionally. Now, the L1 controller always assumes that the incoming data is clean. The L2 controller updates the dirty bit only when the L1 controller writes to the block. 3. Certain unused functions and events are being removed.
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