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-rw-r--r--qemu-doc.texi6
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diff --git a/qemu-doc.texi b/qemu-doc.texi
index 0fbf8b108b..1047c407e7 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -2969,6 +2969,12 @@ replacement since it is not needed anymore.
The @option{-enable-hax} option has been replaced by @option{-accel hax}.
Both options have been introduced in QEMU version 2.9.0.
+@subsection -drive file=json:@{...@{'driver':'file'@}@} (since 3.0)
+
+The 'file' driver for drives is no longer appropriate for character or host
+devices and will only accept regular files (S_IFREG). The correct driver
+for these file types is 'host_cdrom' or 'host_device' as appropriate.
+
@section QEMU Machine Protocol (QMP) commands
@subsection block-dirty-bitmap-add "autoload" parameter (since 2.12.0)