[PATCH] KVM: MMU: fix the condition of syncing a new shadow page

From: Zhao Jin
Date: Mon Oct 24 2011 - 03:22:48 EST


Should be "or" since a new shadow page is synced if either it is
not leaf or there already exists another unsync shadow page with
the same gfn.

Signed-off-by: Zhao Jin <cronozhj@xxxxxxxxx>
---
arch/x86/kvm/mmu.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index d7e1694..f36de41 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1698,7 +1698,7 @@ static struct kvm_mmu_page *kvm_mmu_get_page(struct kvm_vcpu *vcpu,
if (!direct) {
if (rmap_write_protect(vcpu->kvm, gfn))
kvm_flush_remote_tlbs(vcpu->kvm);
- if (level > PT_PAGE_TABLE_LEVEL && need_sync)
+ if (level > PT_PAGE_TABLE_LEVEL || need_sync)
kvm_sync_pages(vcpu, gfn);

account_shadowed(vcpu->kvm, gfn);
--
1.7.5.4

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