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48564041a7
MemoryRegionCache was reverted to "normal" address_space_* operations
for 2.9, due to lack of support for IOMMUs. Reinstate the
optimizations, caching only the IOMMU translation at address_cache_init
but not the IOMMU lookup and target AddressSpace translation are not
cached; now that MemoryRegionCache supports IOMMUs, it becomes more widely
applicable too.
The inlined fast path is defined in memory_ldst_cached.inc.h, while the
slow path uses memory_ldst.inc.c as before. The smaller fast path causes
a little code size reduction in MemoryRegionCache users:
hw/virtio/virtio.o text size before: 32373
hw/virtio/virtio.o text size after: 31941
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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