isapc: Remove unnecessary migration compatibility code

We don't touch isapc when we change guest ABI and add new entries
to PC_COMPAT_* or new PCMachineClass compat flags.  This means
isapc never guaranteed guest ABI and cross-QEMU-version live
migration compatibility.  There's no point in keeping code for
kvm-pv-eoi and APIC ID compatibility in pc_init_isa().

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 1a56465..9dbcbcd 100644 (file)
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -378,8 +378,6 @@ static void pc_compat_0_13(MachineState *machine)
 
 static void pc_init_isa(MachineState *machine)
 {
-    x86_cpu_change_kvm_default("kvm-pv-eoi", NULL);
-    enable_compat_apic_id_mode();
     pc_init1(machine, TYPE_I440FX_PCI_HOST_BRIDGE, TYPE_I440FX_PCI_DEVICE);
 }