[RFC 4/4] arm64: kvm: add cpu reset at module exit

[takahiro.akashi@linaro.org (AKASHI Takahiro)]

This patch doesn't enable kvm to be built as a module, but is
a prerequisite when kvm is transformed to be module-capable.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
---
 arch/arm/kvm/arm.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index 08804d3..b85dad6 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -1181,6 +1181,12 @@ void kvm_arch_hardware_disable(void)
 void kvm_arch_exit(void)
 {
 	kvm_perf_teardown();
+
+	unregister_reboot_notifier(&kvm_reboot_nb);
+	/*
+	 * Reset each CPU in EL2 to initial state.
+	 */
+	on_each_cpu(kvm_cpu_reset, NULL, 1);
 }
 
 static int arm_init(void)
-- 
1.7.9.5