linux-kernel - Re: [PATCH 1/3] PCI/AER: Use 'Correctable' and 'Uncorrectable' spec terms for errors

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Date: Tue, 2 Jan 2024 11:23:11 -0800
From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
To: Bjorn Helgaas <helgaas@...nel.org>, linux-pci@...r.kernel.org
Cc: Mahesh J Salgaonkar <mahesh@...ux.ibm.com>,
 Oliver O'Halloran <oohall@...il.com>, Robert Richter <rrichter@....com>,
 Terry Bowman <terry.bowman@....com>,
 Kai-Heng Feng <kai.heng.feng@...onical.com>, linuxppc-dev@...ts.ozlabs.org,
 linux-kernel@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH 1/3] PCI/AER: Use 'Correctable' and 'Uncorrectable' spec
 terms for errors



On 12/6/2023 2:42 PM, Bjorn Helgaas wrote:
> From: Bjorn Helgaas <bhelgaas@...gle.com>
> 
> The PCIe spec classifies errors as either "Correctable" or "Uncorrectable".
> Previously we printed these as "Corrected" or "Uncorrected".  To avoid
> confusion, use the same terms as the spec.
> 
> One confusing situation is when one agent detects an error, but another
> agent is responsible for recovery, e.g., by re-attempting the operation.
> The first agent may log a "correctable" error but it has not yet been
> corrected.  The recovery agent must report an uncorrectable error if it is
> unable to recover.  If we print the first agent's error as "Corrected", it
> gives the false impression that it has already been resolved.
> 
> Sample message change:
> 
>   - pcieport 0000:00:1c.5: AER: Corrected error received: 0000:00:1c.5
>   + pcieport 0000:00:1c.5: AER: Correctable error received: 0000:00:1c.5
> 
> Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
> ---

Looks good to me.

Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>

>  drivers/pci/pcie/aer.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
> index 42a3bd35a3e1..20db80018b5d 100644
> --- a/drivers/pci/pcie/aer.c
> +++ b/drivers/pci/pcie/aer.c
> @@ -436,9 +436,9 @@ void pci_aer_exit(struct pci_dev *dev)
>   * AER error strings
>   */
>  static const char *aer_error_severity_string[] = {
> -	"Uncorrected (Non-Fatal)",
> -	"Uncorrected (Fatal)",
> -	"Corrected"
> +	"Uncorrectable (Non-Fatal)",
> +	"Uncorrectable (Fatal)",
> +	"Correctable"
>  };
>  
>  static const char *aer_error_layer[] = {

-- 
Sathyanarayanan Kuppuswamy
Linux Kernel Developer