[PATCH] cxl: Add support for ASB_Notify on POWER9

[Benjamin Herrenschmidt]

On Thu, 2017-11-23 at 12:05 +0100, Christophe Lombard wrote:
> The POWER9 core supports a new feature: ASB_Notify which requires the
> support of the Special Purpose Register: TIDR.
> 
> The ASB_Notify command, generated by the AFU, will attempt to
> wake-up the host thread identified by the particular LPID:PID:TID.
> 
> This patch assign a unique TIDR (thread id) for the current thread which
> will be used in the process element entry.

Is that keyd off some device-tree property or similar ? There is no
guarantee that the TIDR and ASB_Notify still exist on future chips...

Ben.