Re: [PATCH V5] cxl: Add support for ASB_Notify on POWER9

2017-12-20 Thread Frederic Barrat
--- a/drivers/misc/cxl/file.c +++ b/drivers/misc/cxl/file.c @@ -173,7 +173,7 @@ static long afu_ioctl_start_work(struct cxl_context *ctx, * flags are set it's invalid */ if (work.reserved1 || work.reserved2 || work.reserved3 || - work.reserved4 || work.reserve

[PATCH V5] cxl: Add support for ASB_Notify on POWER9

2017-12-20 Thread Christophe Lombard
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