accel: Improve selection of the default accelerator

When compiling with "--disable-tcg", we currently still use "tcg"
as default accelerator. "kvm" should be used in this case instead.
Also, some downstream distros provide QEMU binaries which have "kvm"
in their names (e.g. "qemu-kvm" on RHEL or "kvm" on Ubuntu) that use
KVM by default - and some users might want to do something similar
with upstream binaries, too. Accomodate them by using "kvm:tcg" as
default when we detect such a binary name.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1538748792-19444-1-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/vl.c b/vl.c
index 064872cc98..a903619d14 100644
--- a/vl.c
+++ b/vl.c
@@ -4329,7 +4329,7 @@ int main(int argc, char **argv, char **envp)
     qemu_opt_foreach(machine_opts, machine_set_property, current_machine,
                      &error_fatal);
 
-    configure_accelerator(current_machine);
+    configure_accelerator(current_machine, argv[0]);
 
     if (!qtest_enabled() && machine_class->deprecation_reason) {
         error_report("Machine type '%s' is deprecated: %s",