| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20260123113112.3488381-6-s.neeraj@samsung.com> Date: Fri, 23 Jan 2026 17:00:59 +0530 From: Neeraj Kumar <s.neeraj@...sung.com> To: linux-cxl@...r.kernel.org, nvdimm@...ts.linux.dev, linux-kernel@...r.kernel.org, gost.dev@...sung.com Cc: a.manzanares@...sung.com, vishak.g@...sung.com, neeraj.kernel@...il.com, Neeraj Kumar <s.neeraj@...sung.com> Subject: [PATCH V6 05/18] nvdimm/label: Skip region label during ns label DPA reservation 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: Ira Weiny <ira.weiny@...el.com> Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com> Reviewed-by: Dave Jiang <dave.jiang@...el.com> Signed-off-by: Neeraj Kumar <s.neeraj@...sung.com> --- drivers/nvdimm/label.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c index 5a4599c5e5a8..f18b04f63dcc 100644 --- a/drivers/nvdimm/label.c +++ b/drivers/nvdimm/label.c @@ -471,6 +471,13 @@ int nd_label_reserve_dpa(struct nvdimm_drvdata *ndd) lsa_label = to_lsa_label(ndd, slot); nd_label = &lsa_label->ns_label; + /* + * If the LSA label is a region label then it doesn't + * require a dimm-physical-address(DPA) reservation. + */ + if (is_region_label(ndd, lsa_label)) + continue; + if (!slot_valid(ndd, lsa_label, slot)) continue; -- 2.34.1
Powered by blists - more mailing lists