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| author | Paolo Bonzini | 2018-03-18 18:26:36 +0100 |
|---|---|---|
| committer | Paolo Bonzini | 2018-05-09 00:13:38 +0200 |
| commit | 48564041a73adbbff52834f9edbe3806fceefab7 (patch) | |
| tree | 6ea31760c88eaa9d3da36effab22e7d8343ebee2 /include/exec/cpu-all.h | |
| parent | exec: extract address_space_translate_iommu, fix page_mask corner case (diff) | |
| download | qemu-48564041a73adbbff52834f9edbe3806fceefab7.tar.gz qemu-48564041a73adbbff52834f9edbe3806fceefab7.tar.xz qemu-48564041a73adbbff52834f9edbe3806fceefab7.zip | |
exec: reintroduce MemoryRegion caching
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>
Diffstat (limited to 'include/exec/cpu-all.h')
| -rw-r--r-- | include/exec/cpu-all.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index 173edd1fb4..a635f532f9 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -175,7 +175,7 @@ extern unsigned long reserved_va; #define TARGET_ENDIANNESS #include "exec/memory_ldst.inc.h" -#define SUFFIX _cached +#define SUFFIX _cached_slow #define ARG1 cache #define ARG1_DECL MemoryRegionCache *cache #define TARGET_ENDIANNESS @@ -193,6 +193,10 @@ static inline void stl_phys_notdirty(AddressSpace *as, hwaddr addr, uint32_t val #define TARGET_ENDIANNESS #include "exec/memory_ldst_phys.inc.h" +/* Inline fast path for direct RAM access. */ +#define ENDIANNESS +#include "exec/memory_ldst_cached.inc.h" + #define SUFFIX _cached #define ARG1 cache #define ARG1_DECL MemoryRegionCache *cache |