linux-kernel - [GIT PULL] Compute Express Link (CXL) Fixes for 6.7-rc6

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Date: Sun, 17 Dec 2023 00:05:59 -0800
From: Dan Williams <dan.j.williams@...el.com>
To: <torvalds@...ux-foundation.org>
CC: <linux-cxl@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [GIT PULL] Compute Express Link (CXL) Fixes for 6.7-rc6

Hi Linus, please pull from:

  git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl tags/cxl-fixes-6.7-rc6

...to receive a collection of CXL fixes. The touch outside of
drivers/cxl/ is for a helper that allocates physical address space.
Device hotplug tests showed that the driver failed to utilize (skipped
over) valid capacity when allocating a new memory region. Outside of
that, new tests uncovered a small crop of lockdep reports. There is also
some miscellaneous error path and leak fixups that are not urgent, but
useful to cleanup now.

This has been available for the bots to chew on for a few days, but I do
not see it in linux-next. I will need to follow up with Stephen to see
why it missed the 12/15 linux-next. I do not foresee any issues.

---

The following changes since commit 98b1cc82c4affc16f5598d4fa14b1858671b2263:

  Linux 6.7-rc2 (2023-11-19 15:02:14 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl tags/cxl-fixes-6.7-rc6

for you to fetch changes up to ef3d5cf9c59cccb012aa6b93d99f4c6eb5d6648e:

  cxl/pmu: Ensure put_device on pmu devices (2023-12-14 21:54:45 -0800)

----------------------------------------------------------------
cxl fixes for 6.7-rc6

- Fix alloc_free_mem_region()'s scan for address space, prevent false
  negative out-of-space events

- Fix sleeping lock acquisition from CXL trace event (atomic context)

- Fix put_device() like for the new CXL PMU driver

- Fix wrong pointer freed on error path

- Fixup several lockdep reports (missing lock hold) from new assertion
  in cxl_num_decoders_committed() and new tests

----------------------------------------------------------------
Alison Schofield (3):
      cxl/core: Always hold region_rwsem while reading poison lists
      cxl/memdev: Hold region_rwsem during inject and clear poison ops
      kernel/resource: Increment by align value in get_free_mem_region()

Dan Williams (1):
      cxl/hdm: Fix dpa translation locking

Dave Jiang (2):
      cxl/hdm: Fix a benign lockdep splat
      cxl: Add cxl_num_decoders_committed() usage to cxl_test

Ira Weiny (2):
      cxl/cdat: Free correct buffer on checksum error
      cxl/pmu: Ensure put_device on pmu devices

 drivers/cxl/core/hdm.c               |  5 +++--
 drivers/cxl/core/memdev.c            | 27 ++++++++++++++++++++++++---
 drivers/cxl/core/pci.c               | 13 ++++++-------
 drivers/cxl/core/pmu.c               |  2 +-
 drivers/cxl/core/port.c              |  4 ++--
 drivers/cxl/core/region.c            |  5 -----
 kernel/resource.c                    |  4 ++--
 tools/testing/cxl/Kbuild             |  1 +
 tools/testing/cxl/cxl_core_exports.c |  7 +++++++
 tools/testing/cxl/test/cxl.c         |  5 +++--
 10 files changed, 49 insertions(+), 24 deletions(-)
 create mode 100644 tools/testing/cxl/cxl_core_exports.c