From: Jan Kiszka <jan.kiszka@siemens.com>
Date: Fri, 17 Apr 2009 17:24:58 +0000 (+0200)
Subject: KVM: Unregister cpufreq notifier on unload
X-Git-Tag: v2.6.30-rc4~59^2
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=888d256e9c565cb61505bd218eb37c81fe77a325;p=~shefty%2Frdma-dev.git

KVM: Unregister cpufreq notifier on unload

Properly unregister cpufreq notifier on onload if it was registered
during init.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index a1ecec5c03e..7c1ce5ac613 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2775,6 +2775,9 @@ out:
 
 void kvm_arch_exit(void)
 {
+	if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC))
+		cpufreq_unregister_notifier(&kvmclock_cpufreq_notifier_block,
+					    CPUFREQ_TRANSITION_NOTIFIER);
 	kvm_x86_ops = NULL;
 	kvm_mmu_module_exit();
 }