[PATCH v8 9/9] qemu-options.hx: Document the virtio-iommu-pci aw-bits option

[Eric Auger]

Document the new aw-bits option.

Signed-off-by: Eric Auger <eric.auger@redhat.com>

---
v7 -> v8:
- remove "it defaults"
- removed Cedric's R-b

v4 -> v5
- tweek the aw-bits option description according to Cédric's
  suggestion
---
 qemu-options.hx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/qemu-options.hx b/qemu-options.hx
index 379792a215..9d49ce9460 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -1180,6 +1180,9 @@ SRST
         This decides the default granule to be be exposed by the
         virtio-iommu. If host, the granule matches the host page size.
 
+    ``aw-bits=val`` (val between 32 and 64, default depends on machine)
+        This decides the address width of the IOVA address space.
+
 ERST
 
 DEF("name", HAS_ARG, QEMU_OPTION_name,
-- 
2.41.0