Liu Ping Fan <kernelfans@xxxxxxxxx> writes: > To make sure that on host, the pages marked with _PAGE_NUMA result in a fault > when guest access them, we should force the checking when guest uses hypercall > to setup hpte. > > Signed-off-by: Liu Ping Fan <pingfank@xxxxxxxxxxxxxxxxxx> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx> When we mark pte with _PAGE_NUMA we already call mmu_notifier_invalidate_range_start and mmu_notifier_invalidate_range_end, which will mark existing guest hpte entry as HPTE_V_ABSENT. Now we need to do that when we are inserting new guest hpte entries. This patch does that. > --- > v2: > It should be the reply to "[PATCH 2/4] powernv: kvm: make _PAGE_NUMA take effect" > And I imporve the changelog according to Aneesh's suggestion. > --- > arch/powerpc/kvm/book3s_hv_rm_mmu.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c > index 9c51544..af8602d 100644 > --- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c > +++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c > @@ -232,7 +232,7 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, > /* Look up the Linux PTE for the backing page */ > pte_size = psize; > pte = lookup_linux_pte(pgdir, hva, writing, &pte_size); > - if (pte_present(pte)) { > + if (pte_present(pte) && !pte_numa(pte)) { > if (writing && !pte_write(pte)) > /* make the actual HPTE be read-only */ > ptel = hpte_make_readonly(ptel); > -- > 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html