memory: add memory_region_set_size
Add API to change MR size. Will be used internally for RAM resize. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -877,6 +877,16 @@ void memory_region_set_enabled(MemoryRegion *mr, bool enabled);
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*/
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*/
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void memory_region_set_address(MemoryRegion *mr, hwaddr addr);
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void memory_region_set_address(MemoryRegion *mr, hwaddr addr);
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/*
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* memory_region_set_size: dynamically update the size of a region.
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*
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* Dynamically updates the size of a region.
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*
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* @mr: the region to be updated
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* @size: used size of the region.
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*/
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void memory_region_set_size(MemoryRegion *mr, uint64_t size);
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/*
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/*
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* memory_region_set_alias_offset: dynamically update a memory alias's offset
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* memory_region_set_alias_offset: dynamically update a memory alias's offset
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*
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*
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16
memory.c
16
memory.c
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@ -1707,6 +1707,22 @@ void memory_region_set_enabled(MemoryRegion *mr, bool enabled)
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memory_region_transaction_commit();
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memory_region_transaction_commit();
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}
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}
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void memory_region_set_size(MemoryRegion *mr, uint64_t size)
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{
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Int128 s = int128_make64(size);
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if (size == UINT64_MAX) {
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s = int128_2_64();
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}
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if (int128_eq(s, mr->size)) {
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return;
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}
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memory_region_transaction_begin();
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mr->size = s;
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memory_region_update_pending = true;
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memory_region_transaction_commit();
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}
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static void memory_region_readd_subregion(MemoryRegion *mr)
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static void memory_region_readd_subregion(MemoryRegion *mr)
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{
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{
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MemoryRegion *container = mr->container;
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MemoryRegion *container = mr->container;
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