powerpc/kvm: Handle transparent hugepage in KVM

[mirror_ubuntu-artful-kernel.git] / arch / powerpc / kvm / book3s_64_mmu_hv.c

diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index 5880dfb31074895816af634620e736cd51985bc2..710d31317d812efe73086e33a89bcdced65ba349 100644 (file)
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -675,6 +675,7 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
                }
                /* if the guest wants write access, see if that is OK */
                if (!writing && hpte_is_writable(r)) {
+                       unsigned int hugepage_shift;
                        pte_t *ptep, pte;
 
                        /*
@@ -683,9 +684,10 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
                         */
                        rcu_read_lock_sched();
                        ptep = find_linux_pte_or_hugepte(current->mm->pgd,
-                                                        hva, NULL);
-                       if (ptep && pte_present(*ptep)) {
-                               pte = kvmppc_read_update_linux_pte(ptep, 1);
+                                                        hva, &hugepage_shift);
+                       if (ptep) {
+                               pte = kvmppc_read_update_linux_pte(ptep, 1,
+                                                          hugepage_shift);
                                if (pte_write(pte))
                                        write_ok = 1;
                        }