On Fri, 9 Jan 2026 18:14:25 +0530 Neeraj Kumar <[email protected]> wrote:
> CXL 3.2 Spec mentions CXL LSA 2.1 Namespace Labels at section > 9.13.2.5. If Namespace label is present in LSA during > nvdimm_probe() then dimm-physical-address(DPA) reservation is > required. But this reservation is not required by cxl region > label. Therefore if LSA scanning finds any region label, skip it. > > Reviewed-by: Dave Jiang <[email protected]> > Signed-off-by: Neeraj Kumar <[email protected]> Reviewed-by: Jonathan Cameron <[email protected]> > --- > drivers/nvdimm/label.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c > index 9854cb45fb62..169692dfa12c 100644 > --- a/drivers/nvdimm/label.c > +++ b/drivers/nvdimm/label.c > @@ -469,6 +469,14 @@ int nd_label_reserve_dpa(struct nvdimm_drvdata *ndd) > lsa_label = to_lsa_label(ndd, slot); > nd_label = &lsa_label->ns_label; > > + /* > + * Skip region label. If LSA label is region label > + * then it don't require dimm-physical-address(DPA) > + * reservation. Whereas its required for namespace label > + */ > + if (is_region_label(ndd, lsa_label)) > + continue; > + > if (!slot_valid(ndd, lsa_label, slot)) > continue; >
