RE: [PATCH v2 3/3] ras/events: Trace CXL CPER events without CXL stack

[Dan Williams]

Ira Weiny wrote:
> If CXL is solely managed by firmware (including HDM configuration and
> event processing via firmware first) it is possible to run the system
> without the CXL software loaded.  In this case no CXL callback will be
> loaded and CXL CPER errors will not be processed at all.
> 
> In this case memory device and region (HPA) information is missing but
> omitting the error completely is not friendly.  Some device information
> is available the event.
> 
> Trace CXL CPER events if the CXL stack is not loaded.  A balance was
> chosen to decode only the CPER header as this configuration is likely
> rare.

I think the justification for this is weak and it pollutes the user ABI.
What environment cares about CXL RAS without the CXL driver? If such a
use case ever pops up it is trivial to revive this otherwise saves
carrying this and all the minor maintenance overhead it causes.