[PATCH 0/6] PCI/AER: Support Advisory Non-Fatal Errors

[Lukas Wunner <lukas@wunner.de>]

PCIe r7.0 sec 6.2.4.3 specifies that certain Non-Fatal Errors may be
signaled with ERR_COR instead of ERR_NONFATAL.  These so-called Advisory
Non-Fatal Errors are masked by default and hence not reported by Linux.

This series seeks to change that.  The meat of it is in patch [6/6].
There have been several previous attempts to support Advisory Non-Fatal
Errors which are all linked in the patch.

The preceding patches contain prep work.  In particular, they ensure that
the detecting agent and layer is reported correctly for each error (patch
[1/6] and [2/6]), simplify logging of the error source (patch [3/6]),
fix reporting of the TLP Prefix/Header Log (patch [4/6]) and move code
around (patch [5/6]).

The patches have been tested internally, but further testing would be
appreciated to raise the confidence.  Thanks!

Lukas Wunner (6):
  PCI/AER: Fix mapping of errors to agent & layer
  PCI/AER: Log agent & layer for each individual error
  PCI/AER: Deduplicate logging of Error Source Identification
  PCI/AER: Emit TLP Log only for unmasked errors
  PCI/AER: Move retrieval of FEP and TLP Log into helper
  PCI/AER: Support Advisory Non-Fatal Errors

 drivers/pci/pci.h      |   4 +
 drivers/pci/pcie/aer.c | 250 ++++++++++++++++++++++++++++++++---------
 2 files changed, 200 insertions(+), 54 deletions(-)

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2.53.0