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[0/8] cxl: support CXL memory RAS features

Message ID 20250227223816.2036-1-shiju.jose@huawei.com
Headers show
Series cxl: support CXL memory RAS features | expand

Message

Shiju Jose Feb. 27, 2025, 10:38 p.m. UTC 
From: Shiju Jose <shiju.jose@huawei.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