ARM: virt: Add boot-time diagnostics

In order to easily detect pathological cases, print some diagnostics
when the kernel boots.

This also provides helpers to detect that HYP mode is actually available,
which can be used by other subsystems to enable HYP specific features.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

arch/arm/kernel/smp.c

@@ -42,6 +42,7 @@
 #include <asm/ptrace.h>
 #include <asm/localtimer.h>
 #include <asm/smp_plat.h>
+#include <asm/virt.h>
 
 /*
  * as from 2.5, kernels no longer have an init_tasks structure
@@ -287,6 +288,8 @@ void __init smp_cpus_done(unsigned int max_cpus)
 	       num_online_cpus(),
 	       bogosum / (500000/HZ),
 	       (bogosum / (5000/HZ)) % 100);
+
+	hyp_mode_check();
 }
 
 void __init smp_prepare_boot_cpu(void)