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From: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
To: Avi Kivity <avi@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>,
	LKML <linux-kernel@vger.kernel.org>, KVM <kvm@vger.kernel.org>
Subject: [PATCH 2/10] KVM: MMU: fix kvm_mmu_get_spte_hierarchy
Date: Fri, 04 Mar 2011 18:57:27 +0800	[thread overview]
Message-ID: <4D70C597.4070105@cn.fujitsu.com> (raw)
In-Reply-To: <4D70C569.1030107@cn.fujitsu.com>

Don not walk to the next level if spte is mapping to the large page

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
---
 arch/x86/kvm/mmu.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index b9bf016..10e0982 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -3819,7 +3819,8 @@ int kvm_mmu_get_spte_hierarchy(struct kvm_vcpu *vcpu, u64 addr, u64 sptes[4])
 	for_each_shadow_entry(vcpu, addr, iterator) {
 		sptes[iterator.level-1] = *iterator.sptep;
 		nr_sptes++;
-		if (!is_shadow_present_pte(*iterator.sptep))
+		if (!is_shadow_present_pte(*iterator.sptep) ||
+		      is_last_spte(*iterator.sptep, iterator.level))
 			break;
 	}
 	spin_unlock(&vcpu->kvm->mmu_lock);
-- 
1.7.4


  reply	other threads:[~2011-03-04 10:56 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-04 10:56 [PATCH 1/10] KVM: MMU: fix kvm_mmu_slot_remove_write_access Xiao Guangrong
2011-03-04 10:57 ` Xiao Guangrong [this message]
2011-03-05 16:48   ` [PATCH 2/10] KVM: MMU: fix kvm_mmu_get_spte_hierarchy Marcelo Tosatti
2011-03-07  3:06     ` Xiao Guangrong
2011-03-07  8:55       ` Avi Kivity
2011-03-04 10:58 ` [PATCH 3/10] KVM: MMU: set spte accessed bit properly Xiao Guangrong
2011-03-04 10:58 ` [PATCH 4/10] KVM: fix rcu usage in init_rmode_* functions Xiao Guangrong
2011-03-04 11:43   ` Jan Kiszka
2011-03-07  2:04     ` Xiao Guangrong
2011-03-04 10:59 ` [PATCH 5/10] KVM: MMU: move mmu pages calculated out of mmu lock Xiao Guangrong
2011-03-04 11:00 ` [PATCH 6/10] KVM: MMU: don not record gfn in kvm_mmu_pte_write Xiao Guangrong
2011-03-06 12:14   ` Avi Kivity
2011-03-06 12:16     ` Avi Kivity
2011-03-07  3:16       ` Xiao Guangrong
2011-03-04 11:00 ` [PATCH 7/10] KVM: MMU: introduce a common function to get no-dirty-logged slot Xiao Guangrong
2011-03-06 12:28   ` Avi Kivity
2011-03-07  3:50     ` Xiao Guangrong
2011-03-04 11:01 ` [PATCH 8/10] KVM: MMU: cleanup page alloc and free Xiao Guangrong
2011-03-04 11:01 ` [PATCH 9/10] KVM: MMU: remove unused macros Xiao Guangrong
2011-03-04 11:02 ` [PATCH 10/10] KVM: cleanup memslot_id function Xiao Guangrong
2011-03-06 12:32   ` Avi Kivity
2011-03-06 12:34 ` [PATCH 1/10] KVM: MMU: fix kvm_mmu_slot_remove_write_access Avi Kivity

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