hw/arm/virt: Error for MTE enabled with KVM

While we expect KVM to support MTE at some future point,
it certainly won't be ready in time for qemu 5.1.

Signed-off-by: Richard Henderson <[email protected]>
Message-id: [email protected]
Reviewed-by: Peter Maydell <[email protected]>
Signed-off-by: Peter Maydell <[email protected]>

Author: rth7680

hw/arm/virt.c

@@ -1773,6 +1773,12 @@ static void machvirt_init(MachineState *machine)
         exit(1);
     }
 
+    if (vms->mte && kvm_enabled()) {
+        error_report("mach-virt: KVM does not support providing "
+                     "MTE to the guest CPU");
+        exit(1);
+    }
+
     create_fdt(vms);
 
     possible_cpus = mc->possible_cpu_arch_ids(machine);