Re: [PATCH 7/8] drm/xe/xe_ras: Add support for Uncorrectable Core-Compute errors

[Raag Jadav <raag.jadav@intel.com>]

On Thu, Jan 22, 2026 at 03:36:19PM +0530, Riana Tauro wrote:
> Uncorrectable Core-Compute errors are classified into Global and Local
> errors.
> 
> Global error is an error that affects the entire device requiring a
> reset. This type of error is not isolated. When an AER is reported and
> error_detected is invoked return PCI_ERS_RESULT_NEED_RESET.
> 
> A Local error is confined to a specific component or context like a
> engine. These errors can be contained and recovered by resetting
> only the affected part without distrupting the rest of the device.
> 
> Upon detection of an Uncorrectable Local Core-Compute error, an AER is
> generated and GuC is notified of the error. The KMD then sets
> the context as non-runnable and initiates an engine reset.
> (TODO: GuC <->KMD communication for the error).
> Since the error is contained and recovered, PCI error handling
> callback returns PCI_ERS_RESULT_RECOVERED.

...

> +/**
> + * xe_ras_process_errors - Process and contain hardware errors
> + * @xe: xe device instance
> + *
> + * Get error details from system controller and return recovery
> + * method. Called only from PCI error handling.
> + *
> + * Returns: PCI_ERS_RESULT_RECOVERED if recovered or if no recovery needed,
> + * PCI_ERS_RESULT_NEED_RESET otherwise.

PCI error codes are unrelated to xe_ras. IMO let's use standard error
codes here and translate them to PCI ones in the callbacks.

Raag

> + */