linux-kernel - [PATCH] kvm x86: release time

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Date:	Wed, 25 Feb 2009 16:08:31 +0100
From:	Joerg Roedel <joerg.roedel@....com>
To:	Avi Kivity <avi@...hat.com>, Marcelo Tosatti <mtosatti@...hat.com>
CC:	Gerd Hoffmann <kraxel@...hat.com>,
	Glauber de Oliveira Costa <gcosta@...hat.com>,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH] kvm x86: release time_page on vcpu destruction

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

Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
 arch/x86/kvm/x86.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 8ca100a..a1ecec5 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4159,6 +4159,11 @@ 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);
 }
 
-- 
1.5.6.4


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