linux-kernel - [RESEND PATCH v3 0/9] Make ghes

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Date:   Mon, 22 Aug 2022 15:40:39 +0000
From:   Jia He <justin.he@....com>
To:     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>,
        Jonathan Corbet <corbet@....net>,
        Jan Luebbe <jlu@...gutronix.de>,
        Khuong Dinh <khuong@...amperecomputing.com>,
        Kani Toshi <toshi.kani@....com>
Cc:     Ard Biesheuvel <ardb@...nel.org>, 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,
        nd@....com, "Paul E. McKenney" <paulmck@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Neeraj Upadhyay <quic_neeraju@...cinc.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Damien Le Moal <damien.lemoal@...nsource.wdc.com>,
        Muchun Song <songmuchun@...edance.com>,
        linux-doc@...r.kernel.org, Jia He <justin.he@....com>
Subject: [RESEND PATCH v3 0/9] Make ghes_edac a proper module

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.

Changelog:
v3:
 - refine the commit logs
 - introduce ghes preferred and present flag (by Toshi)
 - move force_load to setup parameter
 - add the ghes_edac_preferred() check for x86/Arm edac drivers (incompleted list)
 
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 (9):
  efi/cper: export several helpers for ghes_edac to use
  EDAC/ghes: Add a notifier for reporting memory errors
  EDAC/ghes: Make ghes_edac a proper module to remove the dependency on
    ghes
  EDAC/ghes: Move ghes_edac.force_load to setup parameter
  EDAC: Don't load chipset-specific edac drivers when ghes_edac is
    preferred
  ghes: Introduce a flag ghes_present
  apei/ghes: Use unrcu_pointer for cmpxchg
  EDAC/igen6: Keep returned errno consistent when edac mc has been
    enabled
  edac: Don't load Arm specific edac drivers when ghes_edac is preferred

 .../admin-guide/kernel-parameters.txt         |   5 +
 drivers/acpi/apei/ghes.c                      |  94 ++++++++++++++--
 drivers/edac/Kconfig                          |   4 +-
 drivers/edac/amd64_edac.c                     |   3 +
 drivers/edac/armada_xp_edac.c                 |   3 +
 drivers/edac/edac_module.h                    |   1 +
 drivers/edac/ghes_edac.c                      | 102 +++++++++++-------
 drivers/edac/i10nm_base.c                     |   3 +
 drivers/edac/igen6_edac.c                     |   5 +-
 drivers/edac/layerscape_edac.c                |   3 +
 drivers/edac/pnd2_edac.c                      |   3 +
 drivers/edac/sb_edac.c                        |   3 +
 drivers/edac/skx_base.c                       |   3 +
 drivers/edac/thunderx_edac.c                  |   3 +
 drivers/edac/xgene_edac.c                     |   3 +
 drivers/firmware/efi/cper.c                   |   3 +
 include/acpi/ghes.h                           |  38 +++----
 17 files changed, 204 insertions(+), 75 deletions(-)

-- 
2.25.1