USER_PGTABLES_CEILING
#ifndef USER_PGTABLES_CEILING
vms->unmap_end = USER_PGTABLES_CEILING;
unmap->pg_end = USER_PGTABLES_CEILING;
unmap->vma_end = USER_PGTABLES_CEILING;
unmap->tree_end = USER_PGTABLES_CEILING;
USER_PGTABLES_CEILING, \
USER_PGTABLES_CEILING, \
next ? next->vm_start : USER_PGTABLES_CEILING);
next ? next->vm_start : USER_PGTABLES_CEILING);