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

Hi, 
Sorry for resending the v3.
There is an exceptional interrupt when I tried to post v3 at the first time.
Maybe it is caused by a comma "," inside the mail name.
E.g. 
Signed-off-by: Some, one <someone@site.com>
Looks like a git sendemail issue? 

Anyway, sorry for the inconvenience.
--
Cheers,
Justin (Jia He)

On Tue, Aug 23, 2022 at 3:50 AM Justin He <Justin.He@arm.com> wrote:
>
> Hi,
> Sorry for resending the v3.
> There is an exceptional interrupt when I tried to post v3 at the first time.
> Maybe it is caused by a comma "," inside the mail name.
> E.g.
> Signed-off-by: Some, one <someone@site.com>
> Looks like a git sendemail issue?
>
> Anyway, sorry for the inconvenience.

I've received it twice, but no problem.

I need Boris to tell me what to do with this series.