[PATCH] hw/virtio: Document *_should_notify() are called within rcu_read_lock()

[Philippe Mathieu-Daudé]

Such comments make reviewing this file somehow easier.

Signed-off-by: Philippe Mathieu-Daudé <phi...@redhat.com>
---
 hw/virtio/virtio.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index e02544b2df7..2b4c6c4b875 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -2449,6 +2449,7 @@ static void virtio_set_isr(VirtIODevice *vdev, int value)
     }
 }
 
+/* Called within rcu_read_lock().  */
 static bool virtio_split_should_notify(VirtIODevice *vdev, VirtQueue *vq)
 {
     uint16_t old, new;
@@ -2485,6 +2486,7 @@ static bool vring_packed_need_event(VirtQueue *vq, bool 
wrap,
     return vring_need_event(off, new, old);
 }
 
+/* Called within rcu_read_lock().  */
 static bool virtio_packed_should_notify(VirtIODevice *vdev, VirtQueue *vq)
 {
     VRingPackedDescEvent e;
-- 
2.26.3