[PULL 11/15] qemu-options.hx: document that tftp=dir is readonly

[Michael Tokarev]

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1286
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
---
 qemu-options.hx | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/qemu-options.hx b/qemu-options.hx
index f7c83362d1..aec2328736 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -3100,6 +3100,8 @@ SRST
         server. The files in dir will be exposed as the root of a TFTP
         server. The TFTP client on the guest must be configured in
         binary mode (use the command ``bin`` of the Unix TFTP client).
+        The built-in TFTP server is read-only; it does not implement any
+        command for writing files. QEMU will not write to this directory.
 
     ``tftp-server-name=name``
         In BOOTP reply, broadcast name as the "TFTP server name"
-- 
2.39.2