linux-kernel - [PATCH 0/8] cxl: support CXL memory RAS features

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Message-ID: <20250227223816.2036-1-shiju.jose@huawei.com>
Date: Thu, 27 Feb 2025 22:38:07 +0000
From: <shiju.jose@...wei.com>
To: <linux-cxl@...r.kernel.org>, <dan.j.williams@...el.com>,
	<dave@...olabs.net>, <jonathan.cameron@...wei.com>, <dave.jiang@...el.com>,
	<alison.schofield@...el.com>, <vishal.l.verma@...el.com>,
	<ira.weiny@...el.com>, <david@...hat.com>, <Vilas.Sridharan@....com>
CC: <linux-edac@...r.kernel.org>, <linux-acpi@...r.kernel.org>,
	<linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>, <bp@...en8.de>,
	<tony.luck@...el.com>, <rafael@...nel.org>, <lenb@...nel.org>,
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	<dferguson@...erecomputing.com>, <wbs@...amperecomputing.com>,
	<nifan.cxl@...il.com>, <yazen.ghannam@....com>, <tanxiaofei@...wei.com>,
	<prime.zeng@...ilicon.com>, <roberto.sassu@...wei.com>,
	<kangkang.shen@...urewei.com>, <wanghuiqiang@...wei.com>,
	<linuxarm@...wei.com>, <shiju.jose@...wei.com>
Subject: [PATCH 0/8] cxl: support CXL memory RAS features

From: Shiju Jose <shiju.jose@...wei.com>

Support for CXL memory RAS features: patrol scrub, ECS, soft-PPR and
memory sparing.

This CXL series was part of the EDAC series [1].

The code is based on cxl.git: next branch [2] merged with ras.git: edac-cxl
branch [3].

1. https://lore.kernel.org/linux-cxl/20250212143654.1893-1-shiju.jose@huawei.com/
2. https://web.git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git/log/?h=next
3. https://web.git.kernel.org/pub/scm/linux/kernel/git/ras/ras.git/log/?h=edac-cxl

Userspace code for CXL memory repair features [4] and
sample boot-script for CXL memory repair [5].

[4]: https://lore.kernel.org/lkml/20250207143028.1865-1-shiju.jose@huawei.com/
[5]: https://lore.kernel.org/lkml/20250207143028.1865-5-shiju.jose@huawei.com/

Shiju Jose (8):
  cxl: Add helper function to retrieve a feature entry
  cxl/memfeature: Add CXL memory device patrol scrub control feature
  cxl/memfeature: Add CXL memory device ECS control feature
  cxl/mbox: Add support for PERFORM_MAINTENANCE mailbox command
  cxl/region: Add helper function to determine memory is online
  cxl: Support for finding memory operation attributes from the current
    boot
  cxl/memfeature: Add CXL memory device soft PPR control feature
  cxl/memfeature: Add CXL memory device memory sparing control feature

 Documentation/edac/memory_repair.rst |  103 ++
 Documentation/edac/scrub.rst         |   64 +
 drivers/cxl/Kconfig                  |   20 +
 drivers/cxl/core/Makefile            |    1 +
 drivers/cxl/core/core.h              |   11 +
 drivers/cxl/core/features.c          |   20 +
 drivers/cxl/core/mbox.c              |   45 +-
 drivers/cxl/core/memdev.c            |    9 +
 drivers/cxl/core/memfeatures.c       | 1728 ++++++++++++++++++++++++++
 drivers/cxl/core/ras.c               |  151 +++
 drivers/cxl/core/region.c            |   15 +
 drivers/cxl/cxlmem.h                 |   82 ++
 drivers/cxl/mem.c                    |    4 +
 drivers/cxl/pci.c                    |    3 +
 drivers/edac/mem_repair.c            |    9 +
 include/linux/edac.h                 |    7 +
 16 files changed, 2270 insertions(+), 2 deletions(-)
 create mode 100644 drivers/cxl/core/memfeatures.c
 create mode 100644 drivers/cxl/core/ras.c

-- 
2.43.0