On 10/11/16 17:47, Olaf Hering wrote: > On Thu, Nov 10, Boris Ostrovsky wrote: > >> Are you sure it's this patch that causes the failure? >> >> I commented out '| VM_IO' and still unable to boot with this option. > > Yes, this works for me, sles12sp2 dom0+domU, which is linux-4.4 based: > > +++ b/drivers/xen/gntdev.c > @@ -804,7 +804,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma) > > vma->vm_ops = &gntdev_vmops; > > - vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP | VM_IO; > + vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP /*| VM_IO*/; > > if (use_ptemod) > vma->vm_flags |= VM_DONTCOPY; I think we need a custom policy for this VMA with MPOL_F_MOF cleared. David -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html