On Wed, Sep 27, 2023 at 11:25:22AM -0700, Suren Baghdasaryan wrote: > For uffd_remap can_change_pte_writable() would fail it VM_WRITE is not > set, but we want remapping to work for RO memory as well. Is there an use case that we want remap to work on RO? The thing is, either removing a page or installing a new one with valid content imply VM_WRITE to me on either side.. Thanks, -- Peter Xu