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From aec2ed0972eec0b7d251de1ae27de00b2bf29936 Mon Sep 17 00:00:00 2001
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From: Laszlo Ersek <lersek@redhat.com>
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Date: Tue, 27 Jan 2015 17:48:10 +0100
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Subject: [PATCH 07/16] main(): set current_machine before calling
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machine->init()
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Message-id: <1422380891-11054-2-git-send-email-lersek@redhat.com>
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Patchwork-id: 63584
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O-Subject: [RHEL-7.2 qemu-kvm PATCH 1/2] main(): set current_machine before calling machine->init()
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Bugzilla: 1176283
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Vitaly Kuznetsov <vkuznets@redhat.com>
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RH-Acked-by: Markus Armbruster <armbru@redhat.com>
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Performing the assignment earlier allows machine->init() and its children
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to access current_machine->name.
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The alternative would be to pass QEMUMachineInitArgs down to
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pc_memory_init() and even deeper, which I deem to cause more annoyance for
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future backports than this patch.
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Note that upstream commit 0056ae24bc36798fdd96d0b31e217e9f73896736 moved
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the assignment similarly (but it is not backportable to RHEL-7).
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This patch could only regress code that depends on the nullity of
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"current_machine". I only found one such site, qemu_system_reset().
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qemu_system_reset() is called from the following places:
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- load_vmstate(), which is not called in the code straddled by the
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assignment movement,
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- main_loop_should_exit(), ditto,
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- later in main(),
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- "xen-all.c", irrelevant.
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Downstream only.
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Signed-off-by: Laszlo Ersek <lersek@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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vl.c | 5 +++--
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1 file changed, 3 insertions(+), 2 deletions(-)
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diff --git a/vl.c b/vl.c
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index 2b3dc88..35b927e 100644
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--- a/vl.c
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+++ b/vl.c
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@@ -4252,6 +4252,9 @@ int main(int argc, char **argv, char **envp)
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.kernel_cmdline = kernel_cmdline,
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.initrd_filename = initrd_filename,
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.cpu_model = cpu_model };
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+
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+ current_machine = machine;
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+
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machine->init(&args);
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audio_init();
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@@ -4260,8 +4263,6 @@ int main(int argc, char **argv, char **envp)
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set_numa_modes();
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- current_machine = machine;
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-
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/* init USB devices */
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if (usb_enabled(false)) {
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if (foreach_device_config(DEV_USB, usb_parse) < 0)
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--
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1.8.3.1
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