linux-kernel - [GIT PULL] Compute Express Link (CXL) Fixes for 6.18-rc2

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Message-ID: <ea01d693-0d81-419c-ae20-6332feadd412@intel.com>
Date: Fri, 17 Oct 2025 09:30:49 -0700
From: Dave Jiang <dave.jiang@...el.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: "linux-cxl@...r.kernel.org" <linux-cxl@...r.kernel.org>,
 linux-kernel <linux-kernel@...r.kernel.org>,
 Jonathan Cameron <Jonathan.Cameron@...wei.com>,
 Davidlohr Bueso <dave@...olabs.net>,
 Alison Schofield <alison.schofield@...el.com>,
 Ira Weiny <ira.weiny@...el.com>, Vishal Verma <vishal.l.verma@...el.com>,
 Dan Williams <dan.j.williams@...el.com>
Subject: [GIT PULL] Compute Express Link (CXL) Fixes for 6.18-rc2

Hi Linus, please pull from

git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git tags/cxl-fixes-6.18-rc2

...to receive a small collection of CXL fixes. In addition to some misc fixes
for the CXL subsystem, a number of fixes for CXL extended linear cache support
are included to make it functional again.

While 0f6f1982cb28 ("cxl: Set range param for region_res_match_cxl_range() as const")
is not a fix, it's a small change that addresses a compile warning that arose from the fix
f4d027921c81 ("cxl: Fix match_region_by_range() to use region_res_match_cxl_range()").

These have all appeared in -next for a few days with no reported issues.

---

The following changes since commit 3a8660878839faadb4f1a6dd72c3179c1df56787:

  Linux 6.18-rc1 (2025-10-12 13:42:36 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git tags/cxl-fixes-6.18-rc2

for you to fetch changes up to a4bbb493a3247ef32f6191fd8b2a0657139f8e08:

  cxl/trace: Subtract to find an hpa_alias0 in cxl_poison events (2025-10-14 14:48:14 -0700)

----------------------------------------------------------------
cxl fixes for v6.18-rc2

- Avoid missing port component registers setup due to dport enumeration
  failure
- Add check for no entries in cxl_feature_info to address accessing
  invalid pointer.
- Use %pa printk format to emit resource_size_t in
  validate_region_offset()

CXL extended linear cache support fixes:
- Fix setup of memory resource in cxl_acpi_set_cache_size()
- Set range param for region_res_match_cxl_range() as const.
  (Addresses a compile warning for match_region_by_range() fix)
- Fix match_region_by_range() to use region_res_match_cxl_range()
- Subtract to find an hpa_alias0 in cxl_poison events to correct
  the alias math calculation.

----------------------------------------------------------------
Alison Schofield (2):
      cxl/region: Use %pa printk format to emit resource_size_t
      cxl/trace: Subtract to find an hpa_alias0 in cxl_poison events

Dave Jiang (4):
      cxl/features: Add check for no entries in cxl_feature_info
      cxl/acpi: Fix setup of memory resource in cxl_acpi_set_cache_size()
      cxl: Set range param for region_res_match_cxl_range() as const
      cxl: Fix match_region_by_range() to use region_res_match_cxl_range()

Li Ming (1):
      cxl/port: Avoid missing port component registers setup

 drivers/cxl/acpi.c          |  2 +-
 drivers/cxl/core/features.c |  3 +++
 drivers/cxl/core/port.c     | 26 ++++++++++++++------------
 drivers/cxl/core/region.c   | 11 ++++-------
 drivers/cxl/core/trace.h    |  2 +-
 5 files changed, 23 insertions(+), 21 deletions(-)