From aec2ed0972eec0b7d251de1ae27de00b2bf29936 Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Tue, 27 Jan 2015 17:48:10 +0100
Subject: [PATCH 07/16] main(): set current_machine before calling
 machine->init()

Message-id: <1422380891-11054-2-git-send-email-lersek@redhat.com>
Patchwork-id: 63584
O-Subject: [RHEL-7.2 qemu-kvm PATCH 1/2] main(): set current_machine before calling machine->init()
Bugzilla: 1176283
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
RH-Acked-by: Vitaly Kuznetsov <vkuznets@redhat.com>
RH-Acked-by: Markus Armbruster <armbru@redhat.com>

Performing the assignment earlier allows machine->init() and its children
to access current_machine->name.

The alternative would be to pass QEMUMachineInitArgs down to
pc_memory_init() and even deeper, which I deem to cause more annoyance for
future backports than this patch.

Note that upstream commit 0056ae24bc36798fdd96d0b31e217e9f73896736 moved
the assignment similarly (but it is not backportable to RHEL-7).

This patch could only regress code that depends on the nullity of
"current_machine". I only found one such site, qemu_system_reset().
qemu_system_reset() is called from the following places:
- load_vmstate(), which is not called in the code straddled by the
  assignment movement,
- main_loop_should_exit(), ditto,
- later in main(),
- "xen-all.c", irrelevant.

Downstream only.

Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 vl.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/vl.c b/vl.c
index 2b3dc88..35b927e 100644
--- a/vl.c
+++ b/vl.c
@@ -4252,6 +4252,9 @@ int main(int argc, char **argv, char **envp)
                                  .kernel_cmdline = kernel_cmdline,
                                  .initrd_filename = initrd_filename,
                                  .cpu_model = cpu_model };
+
+    current_machine = machine;
+
     machine->init(&args);
 
     audio_init();
@@ -4260,8 +4263,6 @@ int main(int argc, char **argv, char **envp)
 
     set_numa_modes();
 
-    current_machine = machine;
-
     /* init USB devices */
     if (usb_enabled(false)) {
         if (foreach_device_config(DEV_USB, usb_parse) < 0)
-- 
1.8.3.1