[patch 11/58] KVM: x86: release time_page on vcpu destruction

[Greg KH]

2.6.29-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Joerg Roedel <joerg.roedel@xxxxxxx>

upstream commit: 7f1ea208968f021943d4103ba59e06bb6d8239cb

Not releasing the time_page causes a leak of that page or the compound
page it is situated in.

Cc: stable@xxxxxxxxxx
Signed-off-by: Joerg Roedel <joerg.roedel@xxxxxxx>
Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx>
---
 arch/x86/kvm/x86.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3962,6 +3962,11 @@ EXPORT_SYMBOL_GPL(kvm_put_guest_fpu);
 
 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
 {
+	if (vcpu->arch.time_page) {
+		kvm_release_page_dirty(vcpu->arch.time_page);
+		vcpu->arch.time_page = NULL;
+	}
+
 	kvm_x86_ops->vcpu_free(vcpu);
 }
 


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