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charset="utf-8" The CXL driver's uncorrectable (UCE) protocol error handling will be updated in the future. One required change is for the CXL error handlers to force a system panic when a UCE is detected. Introduce PCI_ERS_RESULT_PANIC as a 'enum pci_ers_result' type. This will be used by CXL UCE fatal and non-fatal recovery in future patches. Update PCIe recovery documentation with details of PCI_ERS_RESULT_PANIC. To clarify, PCI's merge_result() implemented in err.c is not to be changed. merge_result() is not aware of PCI_ERS_RESULT_PANIC and will not return PCI_ERS_RESULT_PANIC. Signed-off-by: Terry Bowman Reviewed-by: Dave Jiang Reviewed-by: Jonathan Cameron Reviewed-by: Ben Cheatham Reviewed-by: Dan Williams --- Changes in v15 -> v16: - None Changes in v14 -> v15: - None Changes in v13 -> v14: - Add review-by for Dan - Update Title prefix (Bjorn) - Removed merge_result. Only logging error for device reporting the error (Dan) Changes in v12->v13: - Add Dave Jiang's, Jonathan's, Ben's review-by - Typo fix (Ben) Changes v11 -> v12: - Documentation requested (Lukas) --- Documentation/PCI/pci-error-recovery.rst | 2 ++ include/linux/pci.h | 3 +++ 2 files changed, 5 insertions(+) diff --git a/Documentation/PCI/pci-error-recovery.rst b/Documentation/PCI/p= ci-error-recovery.rst index 43838723fde9..55be63f1a649 100644 --- a/Documentation/PCI/pci-error-recovery.rst +++ b/Documentation/PCI/pci-error-recovery.rst @@ -102,6 +102,8 @@ Possible return values are:: PCI_ERS_RESULT_NEED_RESET, /* Device driver wants slot to be reset. */ PCI_ERS_RESULT_DISCONNECT, /* Device has completely failed, is unrecove= rable */ PCI_ERS_RESULT_RECOVERED, /* Device driver is fully recovered and oper= ational */ + PCI_ERS_RESULT_NO_AER_DRIVER, /* No AER capabilities registered for the = driver */ + PCI_ERS_RESULT_PANIC, /* System is unstable, panic. Is CXL specifi= c */ }; =20 A driver does not have to implement all of these callbacks; however, diff --git a/include/linux/pci.h b/include/linux/pci.h index 1c270f1d5123..0d6ad11e3422 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -933,6 +933,9 @@ enum pci_ers_result { =20 /* No AER capabilities registered for the driver */ PCI_ERS_RESULT_NO_AER_DRIVER =3D (__force pci_ers_result_t) 6, + + /* System is unstable, panic. Is CXL specific */ + PCI_ERS_RESULT_PANIC =3D (__force pci_ers_result_t) 7, }; =20 /* PCI bus error event callbacks */ --=20 2.34.1