From mboxrd@z Thu Jan  1 00:00:00 1970
From: Lai Jiangshan <laijs@cn.fujitsu.com>
Subject: [PATCH] kvm,async_pf: add missing kvm_async_pf_hash_reset()
Date: Mon, 21 Feb 2011 11:21:30 +0800
Message-ID: <4D61DA3A.7040501@cn.fujitsu.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
To: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	Avi Kivity <avi@redhat.com>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	Gleb Natapov <gleb@redhat.com>
Return-path: <kvm-owner@vger.kernel.org>
Received: from cn.fujitsu.com ([222.73.24.84]:64616 "EHLO song.cn.fujitsu.com"
	rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP
	id S1750819Ab1BUDVL (ORCPT <rfc822;kvm@vger.kernel.org>);
	Sun, 20 Feb 2011 22:21:11 -0500
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>


The hash array of async gfns may still contain some left gfns after
kvm_clear_async_pf_completion_queue() called, need to clear them.

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 17af71d..dae2d15 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -525,8 +525,10 @@ int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
 
 	kvm_x86_ops->set_cr0(vcpu, cr0);
 
-	if ((cr0 ^ old_cr0) & X86_CR0_PG)
+	if ((cr0 ^ old_cr0) & X86_CR0_PG) {
 		kvm_clear_async_pf_completion_queue(vcpu);
+		kvm_async_pf_hash_reset(vcpu);
+	}
 
 	if ((cr0 ^ old_cr0) & update_bits)
 		kvm_mmu_reset_context(vcpu);