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[Qemu-devel] [PATCH v4] vl.c: Output error on invalid machine type provi

From: Michal Novotny
Subject: [Qemu-devel] [PATCH v4] vl.c: Output error on invalid machine type provided
Date: Wed, 31 Jul 2013 08:30:38 +0200

Output error message to stderr when user provides the invalid machine
type on the command line. This also saves time to find what issue is
when you downgrade from one version of qemu to another that doesn't
support required machine type yet (the version user downgraded to have
to have this patch applied too, of course).

Signed-off-by: Michal Novotny <address@hidden>
 vl.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/vl.c b/vl.c
index f422a1c..6ee1a03 100644
--- a/vl.c
+++ b/vl.c
@@ -2671,6 +2671,11 @@ static QEMUMachine *machine_parse(const char *name)
     if (machine) {
         return machine;
+    if (name && !is_help_option(name)) {
+        fprintf(stderr, "Error: Unsupported machine type '%s'\n", name);
+    }
     printf("Supported machines are:\n");
     for (m = first_machine; m != NULL; m = m->next) {
         if (m->alias) {

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