From ae3fa9b069ad0e99fda95a34b18c68effe576f85 Mon Sep 17 00:00:00 2001
From: Markus Armbruster <armbru@redhat.com>
Date: Fri, 17 May 2019 06:51:13 +0200
Subject: [PATCH 46/53] vl: Create block backends before setting machine
 properties
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RH-Author: Markus Armbruster <armbru@redhat.com>
Message-id: <20190517065120.12028-25-armbru@redhat.com>
Patchwork-id: 87985
O-Subject: [RHEL-7.7 qemu-kvm-rhev PATCH v3 24/31] vl: Create block backends before setting machine properties
Bugzilla: 1624009
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>

qemu-system-FOO's main() acts on command line arguments in its own
idiosyncratic order.  There's not much method to its madness.
Whenever we find a case where one kind of command line argument needs
to refer to something created for another kind later, we rejigger the
order.

Block devices get created long after machine properties get processed.
Therefore, block device machine properties can be created, but not
set.  No such properties exist.  But the next commit will create some.
Time to rejigger again: create block devices earlier.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190308131445.17502-8-armbru@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit cda4aa9a5a08777cf13e164c0543bd4888b8adce)
[Trivial conflict in vl.c due to lack of commit 2d5a3a8b02a]

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 vl.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/vl.c b/vl.c
index e0e60fb..15e87a4 100644
--- a/vl.c
+++ b/vl.c
@@ -4465,6 +4465,13 @@ int main(int argc, char **argv, char **envp)
         exit(0);
     }
 
+    /*
+     * Note: we need to create block backends before
+     * machine_set_property(), so machine properties can refer to
+     * them.
+     */
+    configure_blockdev(&bdo_queue, machine_class, snapshot);
+
     machine_opts = qemu_get_machine_opts();
     if (qemu_opt_foreach(machine_opts, machine_set_property, current_machine,
                          NULL)) {
@@ -4590,8 +4597,6 @@ int main(int argc, char **argv, char **envp)
     ram_mig_init();
     dirty_bitmap_mig_init();
 
-    configure_blockdev(&bdo_queue, machine_class, snapshot);
-
     if (qemu_opts_foreach(qemu_find_opts("mon"),
                           mon_init_func, NULL, NULL)) {
         exit(1);
-- 
1.8.3.1