diff options
| -rw-r--r-- | include/exec/memory.h | 12 | ||||
| -rw-r--r-- | memory.c | 7 |
2 files changed, 19 insertions, 0 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index 06ffa1d185..a2ea58776d 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -605,6 +605,18 @@ int memory_region_get_fd(MemoryRegion *mr); */ void *memory_region_get_ram_ptr(MemoryRegion *mr); +/* memory_region_ram_resize: Resize a RAM region. + * + * Only legal before guest might have detected the memory size: e.g. on + * incoming migration, or right after reset. + * + * @mr: a memory region created with @memory_region_init_resizeable_ram. + * @newsize: the new size the region + * @errp: pointer to Error*, to store an error if it happens. + */ +void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, + Error **errp); + /** * memory_region_set_log: Turn dirty logging on or off for a region. * diff --git a/memory.c b/memory.c index ee3f2a8a95..a11e9bf08a 100644 --- a/memory.c +++ b/memory.c @@ -1452,6 +1452,13 @@ void *memory_region_get_ram_ptr(MemoryRegion *mr) return qemu_get_ram_ptr(mr->ram_addr & TARGET_PAGE_MASK); } +void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, Error **errp) +{ + assert(mr->terminates); + + qemu_ram_resize(mr->ram_addr, newsize, errp); +} + static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as) { FlatView *view; |