Store MemoryRegion in RAMBlock

As a step in moving live migration from RAMBlocks to MemoryRegions,
store the MemoryRegion in a RAMBlock.

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

2 files changed, 2 insertions, 0 deletions

diff --git a/cpu-all.h b/cpu-all.h
index 734833abda..4acaa8bc41 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -476,6 +476,7 @@ extern ram_addr_t ram_size;
 #define RAM_PREALLOC_MASK   (1 << 0)
 
 typedef struct RAMBlock {
+    struct MemoryRegion *mr;
     uint8_t *host;
     ram_addr_t offset;
     ram_addr_t length;
diff --git a/exec.c b/exec.c
index dffceb970c..a4116d91cf 100644
--- a/exec.c
+++ b/exec.c
@@ -2793,6 +2793,7 @@ ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
     size = TARGET_PAGE_ALIGN(size);
     new_block = g_malloc0(sizeof(*new_block));
 
+    new_block->mr = mr;
     new_block->offset = find_ram_offset(size);
     if (host) {
         new_block->host = host;