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[Qemu-devel] [PATCH 2/2] vl: Print warning when a default config file is

From: Eduardo Habkost
Subject: [Qemu-devel] [PATCH 2/2] vl: Print warning when a default config file is loaded
Date: Wed, 18 Jan 2017 11:56:24 -0200

In case there were options set in the default config file, print
a warning so users can update their scripts.

If somebody wants to keep the config file as-is, avoid the
warning and use a command-line that will work in future QEMU
versions, they can use:

 $QEMU -nodefconfig -readconfig /etc/qemu/qemu.conf

I was going to add an additional message suggesting it as a
solution, but I thought it could make it more confusing. The
solution can be documented in the QEMU 2.9 ChangeLog.

Signed-off-by: Eduardo Habkost <address@hidden>
 vl.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/vl.c b/vl.c
index b563f9b924..e80b6da4bd 100644
--- a/vl.c
+++ b/vl.c
@@ -2999,6 +2999,12 @@ static int qemu_read_default_config_file(void)
         return ret;
+    if (ret > 0) {
+        loc_set_none();
+        error_report("Warning: Future QEMU versions won't load %s 
+                     CONFIG_QEMU_CONFDIR "/qemu.conf");
+    }
     return 0;

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