vhost: fix sparse warnings

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index b8e112720812..3f101946b4f9 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -714,8 +714,8 @@ int vhost_log_write(struct vhost_virtqueue *vq, struct vhost_log *log,
         return 0;
 }
 
-int translate_desc(struct vhost_dev *dev, u64 addr, u32 len,
-                   struct iovec iov[], int iov_size)
+static int translate_desc(struct vhost_dev *dev, u64 addr, u32 len,
+                          struct iovec iov[], int iov_size)
 {
         const struct vhost_memory_region *reg;
         struct vhost_memory *mem;
@@ -740,7 +740,7 @@ int translate_desc(struct vhost_dev *dev, u64 addr, u32 len,
                 _iov = iov + ret;
                 size = reg->memory_size - addr + reg->guest_phys_addr;
                 _iov->iov_len = min((u64)len, size);
-                _iov->iov_base = (void *)(unsigned long)
+                _iov->iov_base = (void __user *)(unsigned long)
                         (reg->userspace_addr + addr - reg->guest_phys_addr);
                 s += size;
                 addr += size;
@@ -994,7 +994,7 @@ void vhost_discard_vq_desc(struct vhost_virtqueue *vq)
  * want to notify the guest, using eventfd. */
 int vhost_add_used(struct vhost_virtqueue *vq, unsigned int head, int len)
 {
-        struct vring_used_elem *used;
+        struct vring_used_elem __user *used;
 
         /* The virtqueue contains a ring of used buffers.  Get a pointer to the
          * next entry in that used ring. */
@@ -1018,7 +1018,8 @@ int vhost_add_used(struct vhost_virtqueue *vq, unsigned int head, int len)
                 smp_wmb();
                 /* Log used ring entry write. */
                 log_write(vq->log_base,
-                          vq->log_addr + ((void *)used - (void *)vq->used),
+                          vq->log_addr +
+                           ((void __user *)used - (void __user *)vq->used),
                           sizeof *used);
                 /* Log used index update. */
                 log_write(vq->log_base,