diff options
| -rw-r--r-- | include/exec/memory.h | 13 | ||||
| -rw-r--r-- | memory.c | 10 |
2 files changed, 20 insertions, 3 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index 1b7cfdd5b6..3e00cdbbfa 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -1473,8 +1473,19 @@ void *memory_region_get_ram_ptr(MemoryRegion *mr); */ void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, Error **errp); + +/** + * memory_region_msync: Synchronize selected address range of + * a memory mapped region + * + * @mr: the memory region to be msync + * @addr: the initial address of the range to be sync + * @size: the size of the range to be sync + */ +void memory_region_msync(MemoryRegion *mr, hwaddr addr, hwaddr size); + /** - * memory_region_writeback: Trigger cache writeback or msync for + * memory_region_writeback: Trigger cache writeback for * selected address range * * @mr: the memory region to be updated @@ -2197,6 +2197,12 @@ void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, Error **errp qemu_ram_resize(mr->ram_block, newsize, errp); } +void memory_region_msync(MemoryRegion *mr, hwaddr addr, hwaddr size) +{ + if (mr->ram_block) { + qemu_ram_writeback(mr->ram_block, addr, size); + } +} void memory_region_writeback(MemoryRegion *mr, hwaddr addr, hwaddr size) { @@ -2204,8 +2210,8 @@ void memory_region_writeback(MemoryRegion *mr, hwaddr addr, hwaddr size) * Might be extended case needed to cover * different types of memory regions */ - if (mr->ram_block && mr->dirty_log_mask) { - qemu_ram_writeback(mr->ram_block, addr, size); + if (mr->dirty_log_mask) { + memory_region_msync(mr, addr, size); } } |