When mapping a new parent to unsync shadow page, we should mark
parent's unsync_children bit
Reported-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
Signed-off-by: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxx>
---
arch/x86/kvm/mmu.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 97f2ea0..bf35a2f 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1374,7 +1374,9 @@ static struct kvm_mmu_page *kvm_mmu_get_page(struct kvm_vcpu *vcpu,
if (sp->unsync_children) {
set_bit(KVM_REQ_MMU_SYNC, &vcpu->requests);
kvm_mmu_mark_parents_unsync(sp);
- }
+ } else if (sp->unsync)
+ kvm_mmu_mark_parents_unsync(sp);
+
trace_kvm_mmu_get_page(sp, false);
return sp;
}
--
1.6.1.2
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