[Qemu-devel] [PATCH v3] vl.c: Output error on invalid machine type provided

[Michal Novotny]

Output error message when user provides the invalid machine type
on the command line. This also saves time to find what issue is
when you upgrade from one version of qemu to another version that
doesn't support required machine type any longer.

Signed-off-by: Michal Novotny <address@hidden>

---
The patch is checked using ./scripts/checkpatch.pl script and
also is_help_option() function is being used.
 vl.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/vl.c b/vl.c
index 25b8f2f..dc5241b 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)) {
+        printf("Error: Unsupported machine type '%s'\n", name);
+    }
+
     printf("Supported machines are:\n");
     for (m = first_machine; m != NULL; m = m->next) {
         if (m->alias) {
-- 
1.7.11.7