linux-kernel - Re: [PATCH V2 00/20] Add CXL LSA 2.1 format support in nvdimm and cxl pmem

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Message-ID: <1983025922.01754829002385.JavaMail.epsvc@epcpadp1new>
Date: Thu, 7 Aug 2025 14:32:39 +0530
From: Neeraj Kumar <s.neeraj@...sung.com>
To: Dan Williams <dan.j.williams@...el.com>, Davidlohr Bueso
	<dave@...olabs.net>, Jonathan Cameron <jonathan.cameron@...wei.com>, Dave
	Jiang <dave.jiang@...el.com>, Ira Weiny <ira.weiny@...el.com>, Alison
	Schofield <alison.schofield@...el.com>, Vishal Verma
	<vishal.l.verma@...el.com>, 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,
	cpgs@...sung.com
Subject: Re: [PATCH V2 00/20] Add CXL LSA 2.1 format support in nvdimm and
 cxl pmem

On 30/07/25 05:41PM, Neeraj Kumar wrote:
>Introduction:
>=============
>CXL Persistent Memory (Pmem) devices region, namespace and content must be
>persistent across system reboot. In order to achieve this persistency, it
>uses Label Storage Area (LSA) to store respective metadata. During system
>reboot, stored metadata in LSA is used to bring back the region, namespace
>and content of CXL device in its previous state.
>CXL specification provides Get_LSA (4102h) and Set_LSA (4103h) mailbox
>commands to access the LSA area. nvdimm driver is using same commands to
>get/set LSA data.
>

Hi Jonathan, Dave and Ira

I have addressed the review comments of V1 patch-set and sent out this
V2 Patch-set.
0-Day Kernel Test bot has reported couple of minor issues which I will
address in next series.

Can you please have a look at this V2 series and let me know your
feedback.


Regards,
Neeraj