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| /gem5/src/mem/cache/ | ||
| H A D | cache.cc | 11332:40bcb0e97de9 Wed Feb 10 04:08:00 EST 2016 Andreas Hansson <andreas.hansson@arm.com> mem: Align how snoops are handled when hitting writebacks This patch unifies the snoop handling in case of hitting writebacks with how we handle snoops hitting in the tags. As a result, we end up using the same optimisation as the normal snoops, where we inform the downstream cache if we encounter a line in Modified (writable and dirty) state, which enables us to avoid sending out express snoops to invalidate any Shared copies of the line. A few regressions consequently change, as some transactions are sunk higher up in the cache hierarchy. |
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