mbox series

[v5,0/4] Add DPA->HPA translation to dram & general_media events

Message ID cover.1714435815.git.alison.schofield@intel.com
Headers show
Series Add DPA->HPA translation to dram & general_media events | expand

Message

Alison Schofield April 30, 2024, 12:34 a.m. UTC 
From: Alison Schofield <alison.schofield@intel.com>

Changes in v5:
- Add Shiyang Ruan's DPA mask fixup patch[1] (Dan)
  The DPA flags fixup is a required precursor patch to this set so I
  updated Ruan's patch based on the last review messages and added it
  here. That patch can be merged ahead of this set.
- Link to v4: https://lore.kernel.org/cover.1714102202.git.alison.schofield@intel.com/

[1] https://lore.kernel.org/20240417075053.3273543-2-ruansy.fnst@fujitsu.com/


Begin Cover Letter:
Add HPA translations to CXL events: cxl_dram and cxl_general_media

Patch 1: 
The DPA mask fix up patch must precede or be part of this set.
It fixes the issue where upper 32 bits of DPA are truncated.

Patches 2 & 3:
Before adding the new support, do some housekeeping and move related
helpers to the region driver because there is no looking up region
related info without CONFIG_CXL_REGION.

Patch 4:
The new functionality is introduced - cxl_dram & cxl_general_media
events. Lookup and log the DPA->HPA translation along with the
region name and region uuid.


Alison Schofield (4):
  cxl/trace: Correct DPA field masks for general_media & dram events
  cxl/region: Move cxl_dpa_to_region() work to the region driver
  cxl/region: Move cxl_trace_hpa() work to the region driver
  cxl/core: Add region info to cxl_general_media and cxl_dram events

 drivers/cxl/core/core.h   |  14 ++++
 drivers/cxl/core/mbox.c   |  36 ++++++++--
 drivers/cxl/core/memdev.c |  44 -------------
 drivers/cxl/core/region.c | 135 ++++++++++++++++++++++++++++++++++++++
 drivers/cxl/core/trace.c  |  91 -------------------------
 drivers/cxl/core/trace.h  |  50 ++++++++++----
 include/linux/cxl-event.h |  10 +++
 7 files changed, 226 insertions(+), 154 deletions(-)


base-commit: 4cece764965020c22cff7665b18a012006359095