diff options
| -rw-r--r-- | include/exec/memory.h | 10 | ||||
| -rw-r--r-- | memory.c | 16 |
2 files changed, 26 insertions, 0 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index f64ab5e3e5..0882221395 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -878,6 +878,16 @@ void memory_region_set_enabled(MemoryRegion *mr, bool enabled); void memory_region_set_address(MemoryRegion *mr, hwaddr addr); /* + * memory_region_set_size: dynamically update the size of a region. + * + * Dynamically updates the size of a region. + * + * @mr: the region to be updated + * @size: used size of the region. + */ +void memory_region_set_size(MemoryRegion *mr, uint64_t size); + +/* * memory_region_set_alias_offset: dynamically update a memory alias's offset * * Dynamically updates the offset into the target region that an alias points @@ -1707,6 +1707,22 @@ void memory_region_set_enabled(MemoryRegion *mr, bool enabled) memory_region_transaction_commit(); } +void memory_region_set_size(MemoryRegion *mr, uint64_t size) +{ + Int128 s = int128_make64(size); + + if (size == UINT64_MAX) { + s = int128_2_64(); + } + if (int128_eq(s, mr->size)) { + return; + } + memory_region_transaction_begin(); + mr->size = s; + memory_region_update_pending = true; + memory_region_transaction_commit(); +} + static void memory_region_readd_subregion(MemoryRegion *mr) { MemoryRegion *container = mr->container; |