[GIT PULL] Compute Express Link (CXL) Fixes for 6.9-rc4

[GIT PULL] Compute Express Link (CXL) Fixes for 6.9-rc4

[Dave Jiang]

Hi Linus, please pull from

  git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl tags/cxl-fixes-6.9-rc4

...to receive a collection of fixes for the CXL subsystem.

A set of patches to deal with fixing the computation of access_coordinate performance data computed for the CXL device path. 
- An error in the PCI topology walk is addressed to pick up the host bridge performance data from the correct location along the path. 
- The incorrect calculation while doing picoseconds to nanoseconds conversion of the CDAT latency data is fixed. 
- And a check to verify that the access_coordinate data are valid (not zeroes) is added in the computation path to prevent failed perf data from leaking to the user space via sysfs.

Fix an of off by 1 indexing of Clear Event Record handles in cxl_clear_event_record().

Fix of a use before init of a variable map->reg_type in cxl_decode_regblock().

Fix of initialization of mbox_cmd.size_out in cxl_mem_get_records_log() before sending to hardware.

This has build success notification from the kbuild-robot. They have been in the -next for a week with no reported issues.

---

The following changes since commit 4cece764965020c22cff7665b18a012006359095:

  Linux 6.9-rc1 (2024-03-24 14:10:05 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git tags/cxl-fixes-6.9-rc4

for you to fetch changes up to 7bcf809b1e7889ab7e75fe1fcf8f1a98332f36d2:

  cxl: Add checks to access_coordinate calculation to fail missing data (2024-04-08 08:25:21 -0700)

----------------------------------------------------------------
cxl fixes for v6.9-rc4

- Fix index of Clear Event Record handles in cxl_clear_event_record().
- Fix use before init of map->reg_type in cxl_decode_regblock().
- Fix initialization of mbox_cmd.size_out in cxl_mem_get_records_log().
- Series fixing CXL path access_coordinate computation.
  - Remove unneded check of iter in loop.
  - Fix of retrieving of access_coordinate in PCI topology walk.
  - Fix of incorrect region access_coordinate data calculation.
  - Consolidate of access_coordinates attached to downstream port
    context.
  - Add check to validate access_coordinate validity to prevent
    incorrect data being exposed via sysfs.

----------------------------------------------------------------
Dave Jiang (6):
      cxl/core/regs: Fix usage of map->reg_type in cxl_decode_regblock() before assigned
      cxl: Remove checking of iter in cxl_endpoint_get_perf_coordinates()
      cxl: Fix retrieving of access_coordinates in PCIe path
      cxl: Fix incorrect region perf data calculation
      cxl: Consolidate dport access_coordinate ->hb_coord and ->sw_coord into ->coord
      cxl: Add checks to access_coordinate calculation to fail missing data

Kwangjin Ko (1):
      cxl/core: Fix initialization of mbox_cmd.size_out in get event

Yuquan Wang (1):
      cxl/mem: Fix for the index of Clear Event Record Handle

 drivers/cxl/acpi.c           |  13 +---
 drivers/cxl/core/cdat.c      | 152 ++++++++++++++++++++++---------------------
 drivers/cxl/core/mbox.c      |   5 +-
 drivers/cxl/core/port.c      | 114 +++++++++++++++++++-------------
 drivers/cxl/core/regs.c      |   5 +-
 drivers/cxl/cxl.h            |   8 +--
 drivers/cxl/cxlmem.h         |   2 +-
 tools/testing/cxl/test/cxl.c |  10 +--
 8 files changed, 164 insertions(+), 145 deletions(-)   

Re: [GIT PULL] Compute Express Link (CXL) Fixes for 6.9-rc4

[pr-tracker-bot]

The pull request you sent on Thu, 11 Apr 2024 16:37:10 -0700:

> git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl tags/cxl-fixes-6.9-rc4

has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/586b5dfb51b962c1b6c06495715e4c4f76a7fc5a

Thank you!

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