[PATCH] KVM: MMU: fix hugepage mapping corrupt caused by regression
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From: Xiao Guangrong on 23 Jul 2010 01:30 This is the regression, the bug which is fixed by commit e09e90a5 is active now Signed-off-by: Xiao Guangrong <xiaoguangrong(a)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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |