KVM: x86/mmu: WARN on any reserved SPTE value when making a valid SPTE

[linux-2.6-microblaze.git] / arch / x86 / kvm / mmu / spte.c

diff --git a/arch/x86/kvm/mmu/spte.c b/arch/x86/kvm/mmu/spte.c
index 246e61e..3e97cdb 100644 (file)
--- a/arch/x86/kvm/mmu/spte.c
+++ b/arch/x86/kvm/mmu/spte.c
@@ -175,7 +175,10 @@ int make_spte(struct kvm_vcpu *vcpu, unsigned int pte_access, int level,
                spte = mark_spte_for_access_track(spte);
 
 out:
-       WARN_ON(is_mmio_spte(spte));
+       WARN_ONCE(is_rsvd_spte(&vcpu->arch.mmu->shadow_zero_check, spte, level),
+                 "spte = 0x%llx, level = %d, rsvd bits = 0x%llx", spte, level,
+                 get_rsvd_bits(&vcpu->arch.mmu->shadow_zero_check, spte, level));
+
        *new_spte = spte;
        return ret;
 }