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-rw-r--r--qemu-deprecated.texi5
-rw-r--r--qemu-options.hx3
-rw-r--r--vl.c4
3 files changed, 11 insertions, 1 deletions
diff --git a/qemu-deprecated.texi b/qemu-deprecated.texi
index 842e71b11d..1a821b68f4 100644
--- a/qemu-deprecated.texi
+++ b/qemu-deprecated.texi
@@ -72,6 +72,11 @@ backend settings instead of environment variables. To ease migration to
the new format, the ``-audiodev-help'' option can be used to convert
the current values of the environment variables to ``-audiodev'' options.
+@subsection -virtfs_synth (since 4.1)
+
+The ``-virtfs_synth'' argument is now deprecated. Please use ``-fsdev synth''
+and ``-device virtio-9p-...'' instead.
+
@section QEMU Machine Protocol (QMP) commands
@subsection block-dirty-bitmap-add "autoload" parameter (since 2.12.0)
diff --git a/qemu-options.hx b/qemu-options.hx
index 3faa935929..e54c56593b 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -1368,7 +1368,8 @@ DEF("virtfs_synth", 0, QEMU_OPTION_virtfs_synth,
STEXI
@item -virtfs_synth
@findex -virtfs_synth
-Create synthetic file system image
+Create synthetic file system image. Note that this option is now deprecated.
+Please use @code{-fsdev synth} and @code{-device virtio-9p-...} instead.
ETEXI
DEF("iscsi", HAS_ARG, QEMU_OPTION_iscsi,
diff --git a/vl.c b/vl.c
index b6709514c1..8456f006ed 100644
--- a/vl.c
+++ b/vl.c
@@ -3535,6 +3535,10 @@ int main(int argc, char **argv, char **envp)
QemuOpts *fsdev;
QemuOpts *device;
+ warn_report("'-virtfs_synth' is deprecated, please use "
+ "'-fsdev synth' and '-device virtio-9p-...' "
+ "instead");
+
fsdev = qemu_opts_create(qemu_find_opts("fsdev"), "v_synth",
1, NULL);
if (!fsdev) {