[GIT PULL] Compute Express Link (CXL) Fixes for 6.19-rc6

From: Dave Jiang

Date: Fri Jan 16 2026 - 13:03:11 EST


Hi Linus, please pull from

git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git cxl-fixes-6.19-rc6

...to receive a collection of CXL fixes.

This commit, 269031b15c14 ("x86/kaslr: Recognize all ZONE_DEVICE users as physaddr consumers")
is for x86 but was reported through a CXL issue. The commit has an ack from Dave Hansen.

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

---

The following changes since commit 9ace4753a5202b02191d54e9fdf7f9e3d02b85eb:

Linux 6.19-rc4 (2026-01-04 14:41:55 -0800)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git cxl-fixes-6.19-rc6

for you to fetch changes up to 8441c7d3bd6c5a52ab2ecf77e43a5bf262004f5c:

cxl: Check for invalid addresses returned from translation functions on errors (2026-01-13 08:30:40 -0700)

----------------------------------------------------------------
cxl fixes for v6.19-rc6

- Recognize all ZONE_DEVICE users as physaddr consumers
- Fix format string for extended_linear_cache_size_show()
- Fix target list setup for multiple decoders sharing the same
downstream port
- Restore HBIW check before derefernce platform data
- Fix potential infinite loop in __cxl_dpa_reserve()
- Check for invalid addresses returned from translation functions on
error.

----------------------------------------------------------------
Alison Schofield (1):
cxl/acpi: Restore HBIW check before dereferencing platform_data

Arnd Bergmann (1):
cxl/region: fix format string for resource_size_t

Dan Williams (1):
x86/kaslr: Recognize all ZONE_DEVICE users as physaddr consumers

Li Ming (1):
cxl/hdm: Fix potential infinite loop in __cxl_dpa_reserve()

Robert Richter (2):
cxl/port: Fix target list setup for multiple decoders sharing the same dport
cxl: Check for invalid addresses returned from translation functions on errors

arch/x86/mm/kaslr.c | 10 +++++-----
drivers/cxl/acpi.c | 11 +++++++++--
drivers/cxl/core/hdm.c | 4 ++--
drivers/cxl/core/port.c | 2 +-
drivers/cxl/core/region.c | 36 +++++++++++++++++++++++++---------
drivers/pci/Kconfig | 6 ------
mm/Kconfig | 10 +++++++---
tools/testing/cxl/test/cxl_translate.c | 26 ++++++++++++++----------
8 files changed, 67 insertions(+), 38 deletions(-)