memory: make section size a 128-bit integer

So far, the size of all regions passed to listeners could fit in 64 bits,
because artificial regions (containers and aliases) are eliminated by
the memory core, leaving only device regions which have reasonable sizes

An IOMMU however cannot be eliminated by the memory core, and may have
an artificial size, hence we may need 65 bits to represent its size.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index fbabf99f5e..baf84ea0bd 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -81,7 +81,7 @@ static int vhost_sync_dirty_bitmap(struct vhost_dev *dev,
         return 0;
     }
     start_addr = section->offset_within_address_space;
-    end_addr = range_get_last(start_addr, section->size);
+    end_addr = range_get_last(start_addr, int128_get64(section->size));
     start_addr = MAX(first, start_addr);
     end_addr = MIN(last, end_addr);
 
@@ -379,7 +379,7 @@ static void vhost_set_memory(MemoryListener *listener,
     struct vhost_dev *dev = container_of(listener, struct vhost_dev,
                                          memory_listener);
     hwaddr start_addr = section->offset_within_address_space;
-    ram_addr_t size = section->size;
+    ram_addr_t size = int128_get64(section->size);
     bool log_dirty = memory_region_is_logging(section->mr);
     int s = offsetof(struct vhost_memory, regions) +
         (dev->mem->nregions + 1) * sizeof dev->mem->regions[0];