linux-kernel - [PATCH 0/2] Modularize ghes

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Date:   Thu, 11 Aug 2022 09:17:11 +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>
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,
        nd@....com, toshi.kani@....com, Jia He <justin.he@....com>
Subject: [PATCH 0/2] 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.

I tested the cases as follows:
1. build test with ghes_edac built-in and module on Aarch64
2. build test with ghes_edac built-in and module on x86_64
3. boot test with ghes_edac built-in and module on Aarch64
4. modprobe and -r for multiple times on Aarch64.

Jia He (2):
  efi/cper: export several helpers for ghes edac to use
  EDAC/ghes: Modularize ghes_edac driver to remove the dependency on
    ghes

 drivers/acpi/apei/ghes.c    | 49 ++++++++++++++++++++++--
 drivers/edac/Kconfig        |  4 +-
 drivers/edac/ghes_edac.c    | 74 ++++++++++++++++++++++++++-----------
 drivers/firmware/efi/cper.c |  3 ++
 include/acpi/ghes.h         | 33 ++++-------------
 5 files changed, 110 insertions(+), 53 deletions(-)

-- 
2.25.1