cpu: difftest now treates strictly ordered instructions as mmio

OpenXiangShan / GEM5

BSD 3-Clause "New" or "Revised" License

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Closed shinezyy closed 2 years ago

shinezyy commented 2 years ago

Deprecate hard-coded addresses
The MMIO region will be marked as strictly ordered in tlb
This patch might incur false negative in difftest, but is more flexible than previous hard-coded address ranges

Change-Id: Iead92243e8518ca575cd5c10dee02eff5ea8450f