mbox series

[v4,0/3] Add DPA->HPA translation to dram & general_media events

Message ID cover.1714102202.git.alison.schofield@intel.com
Headers show
Series Add DPA->HPA translation to dram & general_media events | expand

Message

Alison Schofield April 26, 2024, 3:46 a.m. UTC 
From: Alison Schofield <alison.schofield@intel.com>


Changes in v4:
- Pick up Dan's style suggestions I missed in v3 (Dan)
- Lookup hpa earlier (within trace_enabled()) and pass to the event handler (Dan)
- Add and use a new member in cxl_event union to access the common phys_addr field.
Link to v3: https://lore.kernel.org/cover.1714085857.git.alison.schofield@intel.com/

Changes in v3:
- Harvest the cxlr before calling trace handler (Dan)
- Replace macros w inline fast assigns (made easier w available cxlr)
- Drop prior review (Jonathan) on Patch 3 due to churn.
- Remove Patch 4 which was making cxl_poison use the (now gone) macros.
  (A uuid_t change was tucked in Patch 4 and can be posted as a separate
  tidy-up patch.)
Link to v2: https://lore.kernel.org/cover.1713842838.git.alison.schofield@intel.com/

An update to the cxl_events unit test is in review here:
https://lore.kernel.org/20240328043727.2186722-1-alison.schofield@intel.com/


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

Patches 1 & 2:
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 3:
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 (3):
  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  |  46 +++++++++----
 include/linux/cxl-event.h |  10 +++
 7 files changed, 224 insertions(+), 152 deletions(-)


base-commit: 4cece764965020c22cff7665b18a012006359095