[WIP Patch v2 08/14] KVM: x86: Implement memory fault exit for FNAME(fetch)

[Anish Moorthy <amoorthy@xxxxxxxxxx>]

---
 arch/x86/kvm/mmu/paging_tmpl.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h
index 57f0b75c80f9d..ed996dccc03bf 100644
--- a/arch/x86/kvm/mmu/paging_tmpl.h
+++ b/arch/x86/kvm/mmu/paging_tmpl.h
@@ -717,7 +717,9 @@ static int FNAME(fetch)(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault,
 	}
 
 	if (WARN_ON_ONCE(it.level != fault->goal_level))
-		return -EFAULT;
+		return kvm_memfault_exit_or_efault(
+			vcpu, fault->gfn * PAGE_SIZE, KVM_PAGES_PER_HPAGE(fault->goal_level),
+			KVM_MEMFAULT_REASON_UNKNOWN);
 
 	ret = mmu_set_spte(vcpu, fault->slot, it.sptep, gw->pte_access,
 			   base_gfn, fault->pfn, fault);
-- 
2.40.0.rc1.284.g88254d51c5-goog