Searched hist:11568 (Results 1 - 4 of 4) sorted by relevance
| /gem5/src/cpu/minor/ | ||
| H A D | fetch1.cc | 11568:91e95eb78191 Thu Jul 21 12:19:00 EDT 2016 Mitch Hayenga <mitch.hayenga@arm.com> cpu: Fix Minor SMT WFI/drain interaction issues The behavior of WFI is to cause minor to cease evaluating pipeline logic until an interrupt is observed, however a user may wish to drain the system while a core is sleeping due to a WFI. This patch makes WFI drain. If an actual drain occurs during a WFI, the CPU is already drained and will immediately be ready for swapping, checkpointing, etc. This should not negatively impact performance as WFI instructions are 'stream-changing' (treated like unpredicted branches), so all remaining instructions are wrong-path and will be squashed rapidly. Change-Id: I63833d5acb53d8dde78f9f0c9611de0ece385e45 |
| H A D | decode.cc | 11568:91e95eb78191 Thu Jul 21 12:19:00 EDT 2016 Mitch Hayenga <mitch.hayenga@arm.com> cpu: Fix Minor SMT WFI/drain interaction issues The behavior of WFI is to cause minor to cease evaluating pipeline logic until an interrupt is observed, however a user may wish to drain the system while a core is sleeping due to a WFI. This patch makes WFI drain. If an actual drain occurs during a WFI, the CPU is already drained and will immediately be ready for swapping, checkpointing, etc. This should not negatively impact performance as WFI instructions are 'stream-changing' (treated like unpredicted branches), so all remaining instructions are wrong-path and will be squashed rapidly. Change-Id: I63833d5acb53d8dde78f9f0c9611de0ece385e45 |
| H A D | fetch2.cc | 11568:91e95eb78191 Thu Jul 21 12:19:00 EDT 2016 Mitch Hayenga <mitch.hayenga@arm.com> cpu: Fix Minor SMT WFI/drain interaction issues The behavior of WFI is to cause minor to cease evaluating pipeline logic until an interrupt is observed, however a user may wish to drain the system while a core is sleeping due to a WFI. This patch makes WFI drain. If an actual drain occurs during a WFI, the CPU is already drained and will immediately be ready for swapping, checkpointing, etc. This should not negatively impact performance as WFI instructions are 'stream-changing' (treated like unpredicted branches), so all remaining instructions are wrong-path and will be squashed rapidly. Change-Id: I63833d5acb53d8dde78f9f0c9611de0ece385e45 |
| H A D | execute.cc | 11568:91e95eb78191 Thu Jul 21 12:19:00 EDT 2016 Mitch Hayenga <mitch.hayenga@arm.com> cpu: Fix Minor SMT WFI/drain interaction issues The behavior of WFI is to cause minor to cease evaluating pipeline logic until an interrupt is observed, however a user may wish to drain the system while a core is sleeping due to a WFI. This patch makes WFI drain. If an actual drain occurs during a WFI, the CPU is already drained and will immediately be ready for swapping, checkpointing, etc. This should not negatively impact performance as WFI instructions are 'stream-changing' (treated like unpredicted branches), so all remaining instructions are wrong-path and will be squashed rapidly. Change-Id: I63833d5acb53d8dde78f9f0c9611de0ece385e45 |
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