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-rw-r--r--hw/virtio/virtio-balloon.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c
index d9754dbd33..a470a0b3a6 100644
--- a/hw/virtio/virtio-balloon.c
+++ b/hw/virtio/virtio-balloon.c
@@ -263,7 +263,7 @@ static void virtio_balloon_get_config(VirtIODevice *vdev, uint8_t *config_data)
config.num_pages = cpu_to_le32(dev->num_pages);
config.actual = cpu_to_le32(dev->actual);
- memcpy(config_data, &config, 8);
+ memcpy(config_data, &config, sizeof(struct virtio_balloon_config));
}
static void virtio_balloon_set_config(VirtIODevice *vdev,
@@ -272,7 +272,7 @@ static void virtio_balloon_set_config(VirtIODevice *vdev,
VirtIOBalloon *dev = VIRTIO_BALLOON(vdev);
struct virtio_balloon_config config;
uint32_t oldactual = dev->actual;
- memcpy(&config, config_data, 8);
+ memcpy(&config, config_data, sizeof(struct virtio_balloon_config));
dev->actual = le32_to_cpu(config.actual);
if (dev->actual != oldactual) {
qemu_balloon_changed(ram_size -
@@ -343,7 +343,8 @@ static void virtio_balloon_device_realize(DeviceState *dev, Error **errp)
VirtIOBalloon *s = VIRTIO_BALLOON(dev);
int ret;
- virtio_init(vdev, "virtio-balloon", VIRTIO_ID_BALLOON, 8);
+ virtio_init(vdev, "virtio-balloon", VIRTIO_ID_BALLOON,
+ sizeof(struct virtio_balloon_config));
ret = qemu_add_balloon_handler(virtio_balloon_to_target,
virtio_balloon_stat, s);