[PATCH] KVM: MMU: fix hugepage mapping corrupt caused by regression

[Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>]

This is the regression, the bug which is fixed by commit e09e90a5
is active now

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
---
 arch/x86/kvm/paging_tmpl.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index a09e04c..d9a2742 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -374,13 +374,13 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr,
 	     shadow_walk_next(&it)) {
 		gfn_t direct_gfn;
 
+		validate_direct_spte(vcpu, it.sptep, direct_access);
+
 		drop_large_spte(vcpu, it.sptep);
 
 		if (is_shadow_present_pte(*it.sptep))
 			continue;
 
-		validate_direct_spte(vcpu, it.sptep, direct_access);
-
 		direct_gfn = gw->gfn & ~(KVM_PAGES_PER_HPAGE(it.level) - 1);
 
 		sp = kvm_mmu_get_page(vcpu, direct_gfn, addr, it.level-1,
-- 
1.6.1.2