[PATCH v10 0/7] Make ghes_edac a proper module

Jia He
2022-10-18T08:27:18Z

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 to make ghes_edac a proper module.

Changelog:
v10:
- add the RCU_INITIALIZER and use the unrcu_pointer wrap for victim
v9:https://lore.kernel.org/lkml/20221017130140.420986-1-justin.he@arm.com/
- drop the unrcu_pointer patch 06 of v8
- add Ard's xchg_release patch to use a better memory barrier
v8:https://lore.kernel.org/lkml/20221010023559.69655-1-justin.he@arm.com/
- merge v7 two force_enable and ghes_get_devices() patches into one
- make force_enable static
v7:https://lore.kernel.org/lkml/20220929023726.73727-1-justin.he@arm.com/
- remove the ghes_edac_preferred and ghes_present (suggested by Borislav)
- adjust the patch splitting, no major functional changes
- remove the r-b tag in those changed patches
v6:https://www.spinics.net/lists/kernel/msg4511453.html
- no code changes from v5 patches
- add the reviewed and acked by from Toshi
- describe the removal of ghes_edac_force_enable checking in Patch 05
v5: https://www.spinics.net/lists/kernel/msg4502787.html
- add the review-by from Toshi for patch 04 and 06
- refine the commit msg
- remove the unconditional set of ghes_edac_force_enable on Arm
v4: https://lore.kernel.org/lkml/20220831074027.13849-6-justin.he@arm.com/
- move the kernel boot option to ghes module parameter
- collapse th ghes_present and ghes_edac_preferred into one patch
v3: https://lore.kernel.org/lkml/20220822154048.188253-1-justin.he@arm.com/
- 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
v2: https://lore.kernel.org/lkml/20220817143458.335938-1-justin.he@arm.com/
- 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
v1: https://lore.kernel.org/lkml/20220811091713.10427-1-justin.he@arm.com/

Ard Biesheuvel (1):
apei/ghes: Use xchg_release() for updating new cache slot instead of
cmpxchg()

Jia He (6):
efi/cper: export several helpers for ghes_edac to use
EDAC/ghes: Add a notifier for reporting memory errors
EDAC/ghes: Prepare to make ghes_edac a proper module
EDAC/ghes: Make ghes_edac a proper module to remove the dependency on
ghes
EDAC: Add the ghes_get_devices() check for chipset-specific edac
drivers
EDAC/igen6: Return consistent errno when another edac driver is
enabled

drivers/acpi/apei/ghes.c | 111 +++++++++++++++++++++++++--------
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 | 90 +++++++++++++++-----------
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 | 34 +++-------
16 files changed, 187 insertions(+), 88 deletions(-)

--
2.25.1