From: Alison Schofield <alison.schofield@intel.com>
To: Neeraj Kumar <s.neeraj@samsung.com>
Cc: <linux-cxl@vger.kernel.org>, <nvdimm@lists.linux.dev>,
<linux-kernel@vger.kernel.org>, <gost.dev@samsung.com>,
<a.manzanares@samsung.com>, <vishak.g@samsung.com>,
<neeraj.kernel@gmail.com>, <cpgs@samsung.com>
Subject: Re: [PATCH V3 00/20] Add CXL LSA 2.1 format support in nvdimm and cxl pmem
Date: Tue, 23 Sep 2025 16:04:57 -0700 [thread overview]
Message-ID: <aNMnmdOY4g5PRpxY@aschofie-mobl2.lan> (raw)
In-Reply-To: <20250917134116.1623730-1-s.neeraj@samsung.com>
On Wed, Sep 17, 2025 at 07:10:56PM +0530, 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.
big snip...
> Limitation (TODO):
> ==================
> Current changes only support interleave way == 1
I see your test setup with the one way interleave and read this
limitation. What are your plans regarding this?
ie. Do you see this limitation as something you could merge with
or do you plan to extend this patchset with support for namespaces
build upon region ways > 1.
-- Alison
next prev parent reply other threads:[~2025-09-23 23:05 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20250917134126epcas5p3e20c773759b91f70a1caa32b9f6f27ff@epcas5p3.samsung.com>
2025-09-17 13:40 ` [PATCH V3 00/20] Add CXL LSA 2.1 format support in nvdimm and cxl pmem Neeraj Kumar
2025-09-17 13:40 ` [PATCH V3 01/20] nvdimm/label: Introduce NDD_REGION_LABELING flag to set region label Neeraj Kumar
2025-09-19 23:10 ` Dave Jiang
2025-09-22 12:41 ` Neeraj Kumar
2025-09-17 13:40 ` [PATCH V3 02/20] nvdimm/label: CXL labels skip the need for 'interleave-set cookie' Neeraj Kumar
2025-09-19 23:31 ` Dave Jiang
2025-09-17 13:40 ` [PATCH V3 03/20] nvdimm/label: Modify nd_label_base() signature Neeraj Kumar
2025-09-19 21:42 ` Ira Weiny
2025-09-19 23:34 ` Dave Jiang
2025-09-22 12:44 ` Neeraj Kumar
2025-09-24 21:02 ` Alison Schofield
2025-09-29 14:07 ` Neeraj Kumar
2025-09-17 13:41 ` [PATCH V3 04/20] nvdimm/label: Update mutex_lock() with guard(mutex)() Neeraj Kumar
2025-09-19 21:55 ` Ira Weiny
2025-09-22 12:56 ` Neeraj Kumar
2025-09-19 23:50 ` Dave Jiang
2025-09-20 17:44 ` Ira Weiny
2025-09-22 13:01 ` Neeraj Kumar
2025-09-24 21:42 ` Alison Schofield
2025-09-29 14:19 ` Neeraj Kumar
2025-09-17 13:41 ` [PATCH V3 05/20] nvdimm/namespace_label: Add namespace label changes as per CXL LSA v2.1 Neeraj Kumar
2025-09-17 14:54 ` Jonathan Cameron
2025-09-19 22:00 ` Ira Weiny
2025-09-22 13:05 ` Neeraj Kumar
2025-09-19 23:59 ` Dave Jiang
2025-09-22 13:03 ` Neeraj Kumar
2025-09-23 21:48 ` Dave Jiang
2025-09-29 13:28 ` Neeraj Kumar
2025-09-17 13:41 ` [PATCH V3 06/20] nvdimm/region_label: Add region label update support Neeraj Kumar
2025-09-17 15:36 ` Jonathan Cameron
2025-09-22 13:12 ` Neeraj Kumar
2025-10-06 16:56 ` Dave Jiang
2025-09-22 23:11 ` Dave Jiang
2025-09-29 13:24 ` Neeraj Kumar
2025-09-17 13:41 ` [PATCH V3 07/20] nvdimm/region_label: Add region label delete support Neeraj Kumar
2025-09-22 21:37 ` Dave Jiang
2025-09-29 13:13 ` Neeraj Kumar
2025-09-17 13:41 ` [PATCH V3 08/20] nvdimm/label: Include region label in slot validation Neeraj Kumar
2025-09-22 22:17 ` Dave Jiang
2025-09-29 13:17 ` Neeraj Kumar
2025-09-24 21:30 ` Alison Schofield
2025-09-29 14:10 ` Neeraj Kumar
2025-09-17 13:41 ` [PATCH V3 09/20] nvdimm/namespace_label: Skip region label during ns label DPA reservation Neeraj Kumar
2025-09-17 13:41 ` [PATCH V3 10/20] nvdimm/namespace_label: Skip region label during namespace creation Neeraj Kumar
2025-09-17 13:41 ` [PATCH V3 11/20] nvdimm/region_label: Preserve cxl region information from region label Neeraj Kumar
2025-09-17 13:41 ` [PATCH V3 12/20] nvdimm/region_label: Export routine to fetch region information Neeraj Kumar
2025-09-23 20:23 ` Dave Jiang
2025-09-29 13:26 ` Neeraj Kumar
2025-09-17 13:41 ` [PATCH V3 13/20] cxl/mem: Refactor cxl pmem region auto-assembling Neeraj Kumar
2025-09-23 22:37 ` Dave Jiang
2025-09-29 13:30 ` Neeraj Kumar
2025-10-06 15:55 ` Dave Jiang
2025-11-07 12:39 ` Neeraj Kumar
2025-11-12 15:55 ` Dave Jiang
2025-11-13 7:27 ` Neeraj Kumar
2025-09-17 13:41 ` [PATCH V3 14/20] cxl/region: Add devm_cxl_pmem_add_region() for pmem region creation Neeraj Kumar
2025-09-23 23:50 ` Dave Jiang
2025-09-29 13:37 ` Neeraj Kumar
2025-09-17 13:41 ` [PATCH V3 15/20] cxl: Add a routine to find cxl root decoder on cxl bus using cxl port Neeraj Kumar
2025-09-24 18:11 ` Dave Jiang
2025-09-29 13:40 ` Neeraj Kumar
2025-10-06 16:02 ` Dave Jiang
2025-09-17 13:41 ` [PATCH V3 16/20] cxl/mem: Preserve cxl root decoder during mem probe Neeraj Kumar
2025-09-24 18:23 ` Dave Jiang
2025-09-29 13:52 ` Neeraj Kumar
2025-09-24 21:38 ` Alison Schofield
2025-09-29 14:13 ` Neeraj Kumar
2025-09-17 13:41 ` [PATCH V3 17/20] cxl/pmem: Preserve region information into nd_set Neeraj Kumar
2025-09-17 13:41 ` [PATCH V3 18/20] cxl/pmem_region: Prep patch to accommodate pmem_region attributes Neeraj Kumar
2025-09-24 18:53 ` Dave Jiang
2025-09-29 13:57 ` Neeraj Kumar
2025-10-06 16:06 ` Dave Jiang
2025-11-07 12:49 ` Neeraj Kumar
2025-11-12 15:40 ` Dave Jiang
2025-11-13 7:29 ` Neeraj Kumar
2025-10-06 16:09 ` Dave Jiang
2025-09-17 13:41 ` [PATCH V3 19/20] cxl/pmem_region: Add sysfs attribute cxl region label updation/deletion Neeraj Kumar
2025-09-24 20:25 ` Dave Jiang
2025-09-29 14:00 ` Neeraj Kumar
2025-09-17 13:41 ` [PATCH V3 20/20] cxl/pmem: Add CXL LSA 2.1 support in cxl pmem Neeraj Kumar
2025-09-24 20:47 ` Dave Jiang
2025-09-29 14:02 ` Neeraj Kumar
2025-10-06 16:13 ` Dave Jiang
2025-09-17 14:50 ` [PATCH V3 00/20] Add CXL LSA 2.1 format support in nvdimm and " Jonathan Cameron
2025-09-17 15:38 ` Dave Jiang
2025-09-22 12:36 ` Neeraj Kumar
2025-09-23 23:04 ` Alison Schofield [this message]
2025-09-29 13:33 ` Neeraj Kumar
[not found] <CGME20250917133019epcas5p2310450fd207693b909b23bf818cd12dc@epcas5p2.samsung.com>
2025-09-17 13:29 ` Neeraj Kumar
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