Commit e7af4c67 authored by Michael S. Tsirkin's avatar Michael S. Tsirkin
Browse files

memory: add memory_region_set_size 



Add API to change MR size.
Will be used internally for RAM resize.

Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Reviewed-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent d86fb034

include/exec/memory.h

+10 −0
Original line number Diff line number Diff line
@@ -877,6 +877,16 @@ 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

 *

memory.c

+16 −0
Original line number Diff line number Diff line
@@ -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;