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authorThomas Huth <thuth@redhat.com>2018-02-28 06:38:23 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2018-03-06 14:01:29 +0100
commit4060e671c33679198d777558bf7c3750610e0f3d (patch)
treecb349f42618360f70f8b8bd7a333db36c4ef2c6a /vl.c
parenteb1fe944a89457981407f5335f11bae104a32e57 (diff)
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balloon: Fix documentation of the --balloon parameter and deprecate it
There are two issues with the documentation of the --balloon parameter: First, "--balloon none" is simply doing nothing. Even if a machine had a balloon device by default, this option is not disabling anything, it is simply ignored. Thus let's simply drop this option from the documentation to avoid to confuse the users (but keep the code in vl.c for backward compatibility). Second, the documentation claims that "--balloon virtio" is the default mode, but this is not true anymore since commit 382f074371f7dc32a34. Since that commit, the option also has no real use case anymore, since you can simply use "--device virtio-balloon" nowadays instead. Thus to simplify our complex parameter zoo a little bit, let's deprecate the the parameter now and tell the user to use "--device virtio-balloon" instead. Fixes: 382f074371f7dc32a34c944c845b1698e83d8c36 Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1519796303-13257-1-git-send-email-thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'vl.c')
-rw-r--r--vl.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/vl.c b/vl.c
index e648bed..dae986b 100644
--- a/vl.c
+++ b/vl.c
@@ -2209,6 +2209,9 @@ static int balloon_parse(const char *arg)
{
QemuOpts *opts;
+ warn_report("This option is deprecated. "
+ "Use '--device virtio-balloon' to enable the balloon device.");
+
if (strcmp(arg, "none") == 0) {
return 0;
}