linux-kernel - [PATCH v2 0/7] Modularize ghes

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Message-Id: <20220817143458.335938-1-justin.he@arm.com>
Date:   Wed, 17 Aug 2022 14:34:51 +0000
From:   Jia He <justin.he@....com>
To:     Ard Biesheuvel <ardb@...nel.org>, Len Brown <lenb@...nel.org>,
        James Morse <james.morse@....com>,
        Tony Luck <tony.luck@...el.com>,
        Borislav Petkov <bp@...en8.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Robert Richter <rric@...nel.org>,
        Robert Moore <robert.moore@...el.com>,
        Qiuxu Zhuo <qiuxu.zhuo@...el.com>,
        Yazen Ghannam <yazen.ghannam@....com>
Cc:     linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-edac@...r.kernel.org, devel@...ica.org,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Shuai Xue <xueshuai@...ux.alibaba.com>,
        Jarkko Sakkinen <jarkko@...nel.org>, linux-efi@...r.kernel.org,
        toshi.kani@....com, nd@....com, Jia He <justin.he@....com>
Subject: [PATCH v2 0/7] Modularize ghes_edac driver

Commit dc4e8c07e9e2 ("ACPI: APEI: explicit init of HEST and GHES in
apci_init()") introduced a bug that ghes_edac_register() would be invoked
before edac_init(). Because at that time, the bus "edac" hasn't been even
registered, this created sysfs /devices/mc0 instead of
/sys/devices/system/edac/mc/mc0 on an Ampere eMag server.

The solution is modularizing the ghes_edac driver.

Changelog:
v2:
 - add acked-by tag of Patch 1 from Ard
 - split the notifier patch
 - add 2 patch to get regular drivers selected when ghes edac is not loaded
 - fix an errno in igen6 driver
 - add a patch to fix the sparse warning of ghes
 - refine the commit logs

Jia He (7):
  efi/cper: export several helpers for ghes edac to use
  EDAC/ghes: Add notifier to report ghes_edac mem error
  EDAC/ghes: Modularize ghes_edac driver to remove the dependency on
    ghes
  EDAC: Get chipset-specific edac drivers selected only when ghes_edac
    is not enabled
  EDAC/ghes: Prevent chipset-specific edac from loading after ghes_edac
    is registered
  apei/ghes: Use unrcu_pointer for cmpxchg
  EDAC/igen6: Keep returned errno consistent when edac mc has been
    enabled

 drivers/acpi/apei/ghes.c    | 72 ++++++++++++++++++++++++++++++++---
 drivers/edac/Kconfig        |  4 +-
 drivers/edac/amd64_edac.c   |  3 ++
 drivers/edac/ghes_edac.c    | 76 ++++++++++++++++++++++++++-----------
 drivers/edac/igen6_edac.c   |  2 +-
 drivers/edac/pnd2_edac.c    |  3 ++
 drivers/edac/sb_edac.c      |  3 ++
 drivers/edac/skx_base.c     |  3 ++
 drivers/firmware/efi/cper.c |  3 ++
 include/acpi/ghes.h         | 37 ++++++------------
 10 files changed, 150 insertions(+), 56 deletions(-)

-- 
2.25.1