[PATCH RESEND v8 0/2] ACPI / APEI: Add support to notify the vendor specific HW errors

From: Shiju Jose
Date: Fri May 29 2020 - 16:06:46 EST

Presently the vendor drivers are unable to do the recovery for the
vendor specific recoverable HW errors because APEI driver does not
support reporting the error to the vendor drivers.

patch set
1. add new interface to the APEI driver for reporting the
vendor specific non-fatal HW errors to the drivers.

2. add driver to handle HiSilicon hip PCIe controller's errors.

1. Removed reporting the standard errors through the interface
because of the conflict with the recent patches in the
memory error handling path.
2. Fix comments by Dan Carpenter.

1. Add changes in the APEI driver suggested by Borislav Petkov, for
queuing up all the non-fatal HW errors to the work queue and
notify the registered kernel drivers from the bottom half using
blocking notifier, common interface for both standard and
vendor-spcific errors.
2. Fix for further feedbacks in v5 HIP PCIe error handler driver
by Bjorn Helgaas.

1. Fix few changes in the patch subject line suggested by Bjorn Helgaas.

1. Fix comments from James Morse.
1.1 Changed the notification method to use the atomic_notifier_chain.
1.2 Add the error handled status for the user space.

1. Fix for the following smatch warning in the PCIe error driver,
reported by kbuild test robot<lkp@xxxxxxxxx>:
warn: should '((((1))) << (9 + i))' be a 64 bit type?
if (err->val_bits & BIT(HISI_PCIE_LOCAL_VALID_ERR_MISC + i))
^^^ This should be BIT_ULL() because it goes up to 9 + 32.

1. Fix the comments from Bjorn Helgaas.

1. Changes in the HiSilicon PCIe controller's error handling driver
for the comments from Bjorn Helgaas.

2. Changes in the APEI interface to support reporting the vendor error
for module with multiple devices, but use the same section type.
In the error handler will use socket id/sub module id etc to distinguish
the device.

1. Fix comments from James Morse.

2. add driver to handle HiSilicon hip08 PCIe controller's errors,
which is an application of the above interface.

Shiju Jose (1):
ACPI / APEI: Add support to notify the vendor specific HW errors To:
Cc: linuxarm@xxxxxxxxxx,yangyicong@xxxxxxxxxxxxx

Yicong Yang (1):
PCI: hip: Add handling of HiSilicon HIP PCIe controller errors

drivers/acpi/apei/ghes.c | 130 ++++++++-
drivers/pci/controller/Kconfig | 8 +
drivers/pci/controller/Makefile | 1 +
drivers/pci/controller/pcie-hisi-error.c | 321 +++++++++++++++++++++++
include/acpi/ghes.h | 28 ++
5 files changed, 487 insertions(+), 1 deletion(-)
create mode 100644 drivers/pci/controller/pcie-hisi-error.c