[Qemu-trivial] [PULL 15/21] qemu-options: Improve -global documentation

[Michael Tokarev]

From: Markus Armbruster <address@hidden>

Recent commit 3751d7c "vl: allow full-blown QemuOpts syntax for
-global" overloaded its existing argument syntax DRIVER.PROP=VALUE
with QemuOpts syntax.  Unambigious as long as no DRIVER contains '='.

Its documentation claims that "the two syntaxes are equivalent."
Improve it to spell out how exactly the old syntax gets desugared into
the new one.

Signed-off-by: Markus Armbruster <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Signed-off-by: Michael Tokarev <address@hidden>
---
 qemu-options.hx | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/qemu-options.hx b/qemu-options.hx
index 7959dd0..39a472e 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -189,8 +189,9 @@ In particular, you can use this to set driver properties 
for devices which are
 created automatically by the machine model. To create a device which is not 
 created automatically and set properties on it, use address@hidden
 
-The two syntaxes are equivalent.  The longer one works for drivers whose name
-contains a dot.
+-global @address@hidden@var{value} is shorthand for -global
address@hidden,address@hidden,address@hidden  The
+longhand syntax works even when @var{driver} contains a dot.
 ETEXI
 
 DEF("boot", HAS_ARG, QEMU_OPTION_boot,
-- 
2.1.4