On Wed, Feb 26, 2025 at 09:21:20AM -0700, Dave Jiang wrote:
> Add the aliased address of extended linear cache when emitting event
> trace for DRAM and general media of CXL events.
and poison events.
>
snip
> @@ -870,6 +876,7 @@ TRACE_EVENT(cxl_poison,
> __string(region, cxlr ? dev_name(&cxlr->dev) : "")
> __field(u64, overflow_ts)
> __field(u64, hpa)
> + __field(u64, hpa_alias0)
> __field(u64, dpa)
> __field(u32, dpa_length)
> __array(char, uuid, 16)
> @@ -892,16 +899,19 @@ TRACE_EVENT(cxl_poison,
> memcpy(__entry->uuid, &cxlr->params.uuid, 16);
> __entry->hpa = cxl_dpa_to_hpa(cxlr, cxlmd,
> __entry->dpa);
> + __entry->hpa_alias0 = cxlr->params.cache_size ?
> + __entry->hpa + cxlr->params.cache_size : ULLONG_MAX;
check for cxl_dpa_to_hpa() returning ULLONG_MAX before doing alias math.
> } else {
> __assign_str(region);
> memset(__entry->uuid, 0, 16);
> __entry->hpa = ULLONG_MAX;
> + __entry->hpa_alias0 = ULLONG_MAX;
> }
> ),
snip
