linux-kernel - [PATCH V4 17/17] cxl/pmem: Add CXL LSA 2.1 support in cxl pmem

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Message-Id: <20251119075255.2637388-18-s.neeraj@samsung.com>
Date: Wed, 19 Nov 2025 13:22:55 +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 V4 17/17] cxl/pmem: Add CXL LSA 2.1 support in cxl pmem

Add support of CXL LSA 2.1 using NDD_REGION_LABELING flag. It creates
cxl region based on region information parsed from LSA

Signed-off-by: Neeraj Kumar <s.neeraj@...sung.com>
---
 drivers/cxl/pmem.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/cxl/pmem.c b/drivers/cxl/pmem.c
index a6eba3572090..5970d1792be8 100644
--- a/drivers/cxl/pmem.c
+++ b/drivers/cxl/pmem.c
@@ -135,6 +135,7 @@ static int cxl_nvdimm_probe(struct device *dev)
 		return rc;
 
 	set_bit(NDD_LABELING, &flags);
+	set_bit(NDD_REGION_LABELING, &flags);
 	set_bit(NDD_REGISTER_SYNC, &flags);
 	set_bit(ND_CMD_GET_CONFIG_SIZE, &cmd_mask);
 	set_bit(ND_CMD_GET_CONFIG_DATA, &cmd_mask);
@@ -155,6 +156,7 @@ static int cxl_nvdimm_probe(struct device *dev)
 		return -ENOMEM;
 
 	dev_set_drvdata(dev, nvdimm);
+	create_pmem_region(nvdimm);
 	return devm_add_action_or_reset(dev, unregister_nvdimm, nvdimm);
 }
 
-- 
2.34.1