diff options
Diffstat (limited to 'include/exec/memory.h')
| -rw-r--r-- | include/exec/memory.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index f64ab5e3e5..0cd96b152e 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -321,6 +321,30 @@ void memory_region_init_ram(MemoryRegion *mr, uint64_t size, Error **errp); +/** + * memory_region_init_resizeable_ram: Initialize memory region with resizeable + * RAM. Accesses into the region will + * modify memory directly. Only an initial + * portion of this RAM is actually used. + * The used size can change across reboots. + * + * @mr: the #MemoryRegion to be initialized. + * @owner: the object that tracks the region's reference count + * @name: the name of the region. + * @size: used size of the region. + * @max_size: max size of the region. + * @resized: callback to notify owner about used size change. + * @errp: pointer to Error*, to store an error if it happens. + */ +void memory_region_init_resizeable_ram(MemoryRegion *mr, + struct Object *owner, + const char *name, + uint64_t size, + uint64_t max_size, + void (*resized)(const char*, + uint64_t length, + void *host), + Error **errp); #ifdef __linux__ /** * memory_region_init_ram_from_file: Initialize RAM memory region with a @@ -878,6 +902,16 @@ 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 |