docs/devel: Remove stale comments related to iommufd dirty tracking

IOMMUFD dirty tracking support had be merged in merge commit dd4bc5f1cfe9,
the stale comments could be dropped.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Link: https://lore.kernel.org/qemu-devel/20251226073007.1139478-1-zhenzhong.duan@intel.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>

diff --git a/docs/devel/vfio-iommufd.rst b/docs/devel/vfio-iommufd.rst
index 3d1c11f175e5968e9f1519da70c9a0a6ced03995..b37098e1b625d9be0368e53b7492db64828c88c3 100644 (file)
--- a/docs/devel/vfio-iommufd.rst
+++ b/docs/devel/vfio-iommufd.rst
@@ -127,18 +127,6 @@ Supports x86, ARM and s390x currently.
 Caveats
 =======
 
-Dirty page sync
----------------
-
-Dirty page sync with iommufd backend is unsupported yet, live migration is
-disabled by default. But it can be force enabled like below, low efficient
-though.
-
-.. code-block:: bash
-
-    -object iommufd,id=iommufd0
-    -device vfio-pci,host=0000:02:00.0,iommufd=iommufd0,enable-migration=on
-
 P2P DMA
 -------