On 25/8/23 15:21, David Hildenbrand wrote:
Let's mark the memslot alias memory regions as unmergable, such that flatview and vhost won't merge adjacent memory region aliases and we can atomically map/unmap individual aliases without affecting adjacent alias memory regions. This handles vhost and vfio in multiple-memslot mode correctly (which do not support atomic memslot updates) and avoids the temporary removal of large memslots, which can be an expensive operation. For example, vfio might have to unpin + repin a lot of memory, which is undesired. Signed-off-by: David Hildenbrand <david@xxxxxxxxxx> --- hw/virtio/virtio-mem.c | 6 ++++++ 1 file changed, 6 insertions(+)
Reviewed-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
