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[1/2] qemu-options: Improve -global documentation

Message ID 1434371759-29592-2-git-send-email-armbru@redhat.com
State New
Headers show

Commit Message

Markus Armbruster June 15, 2015, 12:35 p.m. UTC 
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 <armbru@redhat.com>
---
 qemu-options.hx | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
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Patch

diff --git a/qemu-options.hx b/qemu-options.hx
index 1d281f6..b7afec5 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 -@option{device}.
 
-The two syntaxes are equivalent.  The longer one works for drivers whose name
-contains a dot.
+-global @var{driver}.@var{prop}=@var{value} is shorthand for -global
+driver=@var{driver},property=@var{prop},value=@var{value}.  The
+longhand syntax works even when @var{driver} contains a dot.
 ETEXI
 
 DEF("boot", HAS_ARG, QEMU_OPTION_boot,