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authorKrishnendra Nathella <krinat01@arm.com>2015-07-19 15:03:30 -0500
committerKrishnendra Nathella <krinat01@arm.com>2015-07-19 15:03:30 -0500
commitcabd4768c7186911fda91b9ea458df775b79486a (patch)
treeded7b5edfa8d62f144258f9c8032744a86158d96 /src/proto
parentc0d19391d423d16c5dc587c4946e8395b9c0db91 (diff)
downloadgem5-cabd4768c7186911fda91b9ea458df775b79486a.tar.xz
cpu: Fix LLSC atomic CPU wakeup
Writes to locked memory addresses (LLSC) did not wake up the locking CPU. This can lead to deadlocks on multi-core runs. In AtomicSimpleCPU, recvAtomicSnoop was checking if the incoming packet was an invalidation (isInvalidate) and only then handled a locked snoop. But, writes are seen instead of invalidates when running without caches (fast-forward configurations). As as simple fix, now handleLockedSnoop is also called even if the incoming snoop packet are from writes.
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