X-Git-Url: https://repo.jachan.dev/qemu.git/blobdiff_plain/7135781f65f1267a72bf554ee2b7bd605f9e59aa..a6efd6ae7b8696bfeb0336826b01bfe0e1840154:/memory.c

diff --git a/memory.c b/memory.c
index 0f4fdc7db7..c343bf37df 100644
--- a/memory.c
+++ b/memory.c
@@ -1152,6 +1152,23 @@ void memory_region_init_ram(MemoryRegion *mr,
     mr->ram_addr = qemu_ram_alloc(size, mr, errp);
 }
 
+void memory_region_init_resizeable_ram(MemoryRegion *mr,
+                                       Object *owner,
+                                       const char *name,
+                                       uint64_t size,
+                                       uint64_t max_size,
+                                       void (*resized)(const char*,
+                                                       uint64_t length,
+                                                       void *host),
+                                       Error **errp)
+{
+    memory_region_init(mr, owner, name, size);
+    mr->ram = true;
+    mr->terminates = true;
+    mr->destructor = memory_region_destructor_ram;
+    mr->ram_addr = qemu_ram_alloc_resizeable(size, max_size, resized, mr, errp);
+}
+
 #ifdef __linux__
 void memory_region_init_ram_from_file(MemoryRegion *mr,
                                       struct Object *owner,
@@ -1707,6 +1724,22 @@ 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;
@@ -1749,6 +1782,11 @@ ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr)
     return mr->ram_addr;
 }
 
+uint64_t memory_region_get_alignment(const MemoryRegion *mr)
+{
+    return mr->align;
+}
+
 static int cmp_flatrange_addr(const void *addr_, const void *fr_)
 {
     const AddrRange *addr = addr_;