From: Neeraj Kumar <s.neeraj@samsung.com>
To: Jonathan Cameron <jonathan.cameron@huawei.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 V4 05/17] nvdimm/label: Skip region label during ns label DPA reservation
Date: Fri, 9 Jan 2026 17:23:13 +0530 [thread overview]
Message-ID: <20260109115313.r2ei4ymjtbkbkpy6@test-PowerEdge-R740xd> (raw)
In-Reply-To: <20251217143308.00006144@huawei.com>
[-- Attachment #1: Type: text/plain, Size: 625 bytes --]
On 17/12/25 02:33PM, Jonathan Cameron wrote:
>On Wed, 19 Nov 2025 13:22:43 +0530
>Neeraj Kumar <s.neeraj@samsung.com> wrote:
>
>> If Namespace label is present in LSA during nvdimm_probe() then DPA
>> reservation is required. But this reservation is not required by region
>> label. Therefore if LSA scanning finds any region label, skip it.
>
>It would be good to have a little more explanation of why these two
>types of label put different requirements here.
>
>I'd rather not go spec diving to find out!
>
>Otherwise LGTM.
Thanks Jonathan for review, I have added further explanation in commit message
Regards,
Neeraj
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next prev parent reply other threads:[~2026-01-09 11:58 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20251119075306epcas5p22a87515de65a3c668275b394cdea83b0@epcas5p2.samsung.com>
2025-11-19 7:52 ` [PATCH V4 00/17] Add CXL LSA 2.1 format support in nvdimm and cxl pmem Neeraj Kumar
2025-11-19 7:52 ` [PATCH V4 01/17] nvdimm/label: Introduce NDD_REGION_LABELING flag to set region label Neeraj Kumar
2025-11-19 7:52 ` [PATCH V4 02/17] nvdimm/label: CXL labels skip the need for 'interleave-set cookie' Neeraj Kumar
2025-11-19 7:52 ` [PATCH V4 03/17] nvdimm/label: Add namespace/region label support as per LSA 2.1 Neeraj Kumar
2025-11-19 15:51 ` Dave Jiang
2026-01-09 11:46 ` Neeraj Kumar
2025-12-17 14:31 ` Jonathan Cameron
2026-01-09 11:51 ` Neeraj Kumar
2025-11-19 7:52 ` [PATCH V4 04/17] nvdimm/label: Include region label in slot validation Neeraj Kumar
2025-11-19 16:54 ` Dave Jiang
2025-11-19 7:52 ` [PATCH V4 05/17] nvdimm/label: Skip region label during ns label DPA reservation Neeraj Kumar
2025-11-19 17:01 ` Dave Jiang
2025-12-17 14:33 ` Jonathan Cameron
2026-01-09 11:53 ` Neeraj Kumar [this message]
2025-11-19 7:52 ` [PATCH V4 06/17] nvdimm/label: Preserve region label during namespace creation Neeraj Kumar
2025-11-19 18:07 ` Dave Jiang
2025-11-19 7:52 ` [PATCH V4 07/17] nvdimm/label: Add region label delete support Neeraj Kumar
2025-11-19 19:50 ` Dave Jiang
2026-01-09 11:56 ` Neeraj Kumar
2025-12-17 15:05 ` Jonathan Cameron
2026-01-09 11:58 ` Neeraj Kumar
2025-11-19 7:52 ` [PATCH V4 08/17] nvdimm/label: Preserve cxl region information from region label Neeraj Kumar
2025-11-19 20:13 ` Dave Jiang
2026-01-09 12:03 ` Neeraj Kumar
2025-12-17 15:09 ` Jonathan Cameron
2026-01-09 12:06 ` Neeraj Kumar
2025-11-19 7:52 ` [PATCH V4 09/17] nvdimm/label: Export routine to fetch region information Neeraj Kumar
2025-11-19 20:18 ` Dave Jiang
2025-12-17 15:12 ` Jonathan Cameron
2026-01-09 12:09 ` Neeraj Kumar
2025-11-19 7:52 ` [PATCH V4 10/17] cxl/mem: Refactor cxl pmem region auto-assembling Neeraj Kumar
2025-11-19 20:44 ` Dave Jiang
2026-01-09 12:10 ` Neeraj Kumar
2025-11-19 7:52 ` [PATCH V4 11/17] cxl/region: Add devm_cxl_pmem_add_region() for pmem region creation Neeraj Kumar
2025-11-19 21:33 ` Dave Jiang
2026-01-09 12:13 ` Neeraj Kumar
2025-12-17 15:28 ` Jonathan Cameron
2026-01-09 12:22 ` Neeraj Kumar
2025-11-19 7:52 ` [PATCH V4 12/17] cxl/pmem: Preserve region information into nd_set Neeraj Kumar
2025-11-19 22:00 ` Dave Jiang
2025-11-19 7:52 ` [PATCH V4 13/17] cxl/pmem_region: Prep patch to accommodate pmem_region attributes Neeraj Kumar
2025-11-19 22:08 ` Dave Jiang
2025-12-17 15:35 ` Jonathan Cameron
2026-01-09 12:26 ` Neeraj Kumar
2025-11-19 7:52 ` [PATCH V4 14/17] cxl/pmem_region: Introduce CONFIG_CXL_PMEM_REGION for core/pmem_region.c Neeraj Kumar
2025-11-19 22:24 ` Dave Jiang
2025-12-17 15:38 ` Jonathan Cameron
2026-01-09 12:29 ` Neeraj Kumar
2025-11-19 7:52 ` [PATCH V4 15/17] cxl/pmem_region: Add sysfs attribute cxl region label updation/deletion Neeraj Kumar
2025-11-19 23:10 ` Dave Jiang
2026-01-09 12:31 ` Neeraj Kumar
2025-12-17 15:40 ` Jonathan Cameron
2026-01-09 12:32 ` Neeraj Kumar
2025-11-19 7:52 ` [PATCH V4 16/17] cxl/pmem_region: Create pmem region using information parsed from LSA Neeraj Kumar
2025-11-19 23:37 ` Dave Jiang
2026-01-09 12:37 ` Neeraj Kumar
2025-11-19 7:52 ` [PATCH V4 17/17] cxl/pmem: Add CXL LSA 2.1 support in cxl pmem Neeraj Kumar
2025-11-19 23:37 ` Dave Jiang
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