-machine vmport=auto: Fix handling of VMWare ioport emulation for xen

c/s 9b23cfb76b3a5e9eb5cc899eaf2f46bc46d33ba4

or

c/s b154537ad07598377ebf98252fb7d2aff127983b

moved the testing of xen_enabled() from pc_init1() to
pc_machine_initfn().

xen_enabled() does not return the correct value in
pc_machine_initfn().

Changed vmport from a bool to an enum.  Added the value "auto" to do
the old way.  Move check of xen_enabled() back to pc_init1().

Acked-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Don Slutz <dslutz@verizon.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 f4a6e5e05b..eb89d62906 100644
--- a/vl.c
+++ b/vl.c
@@ -381,7 +381,7 @@ static QemuOptsList qemu_machine_opts = {
             .help = "maximum ram below the 4G boundary (32bit boundary)",
         }, {
             .name = PC_MACHINE_VMPORT,
-            .type = QEMU_OPT_BOOL,
+            .type = QEMU_OPT_STRING,
             .help = "Enable vmport (pc & q35)",
         },{
             .name = "iommu",