diff options
Diffstat (limited to 'drivers/virtio/virtio_mem.c')
| -rw-r--r-- | drivers/virtio/virtio_mem.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c index 3573b78f6b05..0da0af251c73 100644 --- a/drivers/virtio/virtio_mem.c +++ b/drivers/virtio/virtio_mem.c @@ -2672,8 +2672,10 @@ static int virtio_mem_create_resource(struct virtio_mem *vm) if (!name) return -ENOMEM; + /* Disallow mapping device memory via /dev/mem completely. */ vm->parent_resource = __request_mem_region(vm->addr, vm->region_size, - name, IORESOURCE_SYSTEM_RAM); + name, IORESOURCE_SYSTEM_RAM | + IORESOURCE_EXCLUSIVE); if (!vm->parent_resource) { kfree(name); dev_warn(&vm->vdev->dev, "could not reserve device region\n"); |