Merge tag 'cxl-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl

Pull Compute Express Link (CXL)  updates from Dave Jiang:

 - Add support for Global Persistent Flush (GPF)

 - Cleanup of DPA partition metadata handling:
     - Remove the CXL_DECODER_MIXED enum that's not needed anymore
     - Introduce helpers to access resource and perf meta data
     - Introduce 'struct cxl_dpa_partition' and 'struct cxl_range_info'
     - Make cxl_dpa_alloc() DPA partition number agnostic
     - Remove cxl_decoder_mode
     - Cleanup partition size and perf helpers

 - Remove unused CXL partition values

 - Add logging support for CXL CPER endpoint and port protocol errors:
     - Prefix protocol error struct and function names with cxl_
     - Move protocol error definitions and structures to a common location
     - Remove drivers/firmware/efi/cper_cxl.h to include/linux/cper.h
     - Add support in GHES to process CXL CPER protocol errors
     - Process CXL CPER protocol errors
     - Add trace logging for CXL PCIe port RAS errors

 - Remove redundant gp_port init

 - Add validation of cxl device serial number

 - CXL ABI documentation updates/fixups

 - A series that uses guard() to clean up open coded mutex lockings and
   remove gotos for error handling.

 - Some followup patches to support dirty shutdown accounting:
     - Add helper to retrieve DVSEC offset for dirty shutdown registers
     - Rename cxl_get_dirty_shutdown() to cxl_arm_dirty_shutdown()
     - Add support for dirty shutdown count via sysfs
     - cxl_test support for dirty shutdown

 - A series to support CXL mailbox Features commands.

   Mostly in preparation for CXL EDAC code to utilize the Features
   commands. It's also in preparation for CXL fwctl support to utilize
   the CXL Features. The commands include "Get Supported Features", "Get
   Feature", and "Set Feature".

 - A series to support extended linear cache support described by the
   ACPI HMAT table.

   The addition helps enumerate the cache and also provides additional
   RAS reporting support for configuration with extended linear cache.
   (and related fixes for the series).

 - An update to cxl_test to support a 3-way capable CFMWS

 - A documentation fix to remove unused "mixed mode"

* tag 'cxl-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (39 commits)
  cxl/region: Fix the first aliased address miscalculation
  cxl/region: Quiet some dev_warn()s in extended linear cache setup
  cxl/Documentation: Remove 'mixed' from sysfs mode doc
  cxl: Fix warning from emitting resource_size_t as long long int on 32bit systems
  cxl/test: Define a CFMWS capable of a 3 way HB interleave
  cxl/mem: Do not return error if CONFIG_CXL_MCE unset
  tools/testing/cxl: Set Shutdown State support
  cxl/pmem: Export dirty shutdown count via sysfs
  cxl/pmem: Rename cxl_dirty_shutdown_state()
  cxl/pci: Introduce cxl_gpf_get_dvsec()
  cxl/pci: Support Global Persistent Flush (GPF)
  cxl: Document missing sysfs files
  cxl: Plug typos in ABI doc
  cxl/pmem: debug invalid serial number data
  cxl/cdat: Remove redundant gp_port initialization
  cxl/memdev: Remove unused partition values
  cxl/region: Drop goto pattern of construct_region()
  cxl/region: Drop goto pattern in cxl_dax_region_alloc()
  cxl/core: Use guard() to drop goto pattern of cxl_dpa_alloc()
  cxl/core: Use guard() to drop the goto pattern of cxl_dpa_free()
  ...

3 files changed, 48 insertions, 13 deletions

diff --git a/Documentation/ABI/stable/sysfs-devices-node b/Documentation/ABI/stable/sysfs-devices-node
index 402af4b2b905..a02707cb7cbc 100644
--- a/Documentation/ABI/stable/sysfs-devices-node
+++ b/Documentation/ABI/stable/sysfs-devices-node
@@ -177,6 +177,12 @@ Description:
 		The cache write policy: 0 for write-back, 1 for write-through,
 		other or unknown.
 
+What:		/sys/devices/system/node/nodeX/memory_side_cache/indexY/address_mode
+Date:		March 2025
+Contact:	Dave Jiang <dave.jiang@intel.com>
+Description:
+		The address mode: 0 for reserved, 1 for extended-linear.
+
 What:		/sys/devices/system/node/nodeX/x86/sgx_total_bytes
 Date:		November 2021
 Contact:	Jarkko Sakkinen <jarkko@kernel.org>
diff --git a/Documentation/ABI/testing/sysfs-bus-cxl b/Documentation/ABI/testing/sysfs-bus-cxl
index 3f5627a1210a..99bb3faf7a0e 100644
--- a/Documentation/ABI/testing/sysfs-bus-cxl
+++ b/Documentation/ABI/testing/sysfs-bus-cxl
@@ -1,5 +1,5 @@
 What:		/sys/bus/cxl/flush
-Date:		Januarry, 2022
+Date:		January, 2022
 KernelVersion:	v5.18
 Contact:	linux-cxl@vger.kernel.org
 Description:
@@ -18,6 +18,24 @@ Description:
 		specification.
 
 
+What:		/sys/bus/cxl/devices/memX/payload_max
+Date:		December, 2020
+KernelVersion:	v5.12
+Contact:	linux-cxl@vger.kernel.org
+Description:
+		(RO) Maximum size (in bytes) of the mailbox command payload
+		registers. Linux caps this at 1MB if the device reports a
+		larger size.
+
+
+What:		/sys/bus/cxl/devices/memX/label_storage_size
+Date:		May, 2021
+KernelVersion:	v5.13
+Contact:	linux-cxl@vger.kernel.org
+Description:
+		(RO) Size (in bytes) of the Label Storage Area (LSA).
+
+
 What:		/sys/bus/cxl/devices/memX/ram/size
 Date:		December, 2020
 KernelVersion:	v5.12
@@ -33,7 +51,7 @@ Date:		May, 2023
 KernelVersion:	v6.8
 Contact:	linux-cxl@vger.kernel.org
 Description:
-		(RO) For CXL host platforms that support "QoS Telemmetry"
+		(RO) For CXL host platforms that support "QoS Telemetry"
 		this attribute conveys a comma delimited list of platform
 		specific cookies that identifies a QoS performance class
 		for the volatile partition of the CXL mem device. These
@@ -60,7 +78,7 @@ Date:		May, 2023
 KernelVersion:	v6.8
 Contact:	linux-cxl@vger.kernel.org
 Description:
-		(RO) For CXL host platforms that support "QoS Telemmetry"
+		(RO) For CXL host platforms that support "QoS Telemetry"
 		this attribute conveys a comma delimited list of platform
 		specific cookies that identifies a QoS performance class
 		for the persistent partition of the CXL mem device. These
@@ -321,14 +339,13 @@ KernelVersion:	v6.0
 Contact:	linux-cxl@vger.kernel.org
 Description:
 		(RW) When a CXL decoder is of devtype "cxl_decoder_endpoint" it
-		translates from a host physical address range, to a device local
-		address range. Device-local address ranges are further split
-		into a 'ram' (volatile memory) range and 'pmem' (persistent
-		memory) range. The 'mode' attribute emits one of 'ram', 'pmem',
-		'mixed', or 'none'. The 'mixed' indication is for error cases
-		when a decoder straddles the volatile/persistent partition
-		boundary, and 'none' indicates the decoder is not actively
-		decoding, or no DPA allocation policy has been set.
+		translates from a host physical address range, to a device
+		local address range. Device-local address ranges are further
+		split into a 'ram' (volatile memory) range and 'pmem'
+		(persistent memory) range. The 'mode' attribute emits one of
+		'ram', 'pmem', or 'none'. The 'none' indicates the decoder is
+		not actively decoding, or no DPA allocation policy has been
+		set.
 
 		'mode' can be written, when the decoder is in the 'disabled'
 		state, with either 'ram' or 'pmem' to set the boundaries for the
@@ -423,7 +440,7 @@ Date:		May, 2023
 KernelVersion:	v6.5
 Contact:	linux-cxl@vger.kernel.org
 Description:
-		(RO) For CXL host platforms that support "QoS Telemmetry" this
+		(RO) For CXL host platforms that support "QoS Telemetry" this
 		root-decoder-only attribute conveys a platform specific cookie
 		that identifies a QoS performance class for the CXL Window.
 		This class-id can be compared against a similar "qos_class"
@@ -586,3 +603,15 @@ Description:
 		See Documentation/ABI/stable/sysfs-devices-node. access0 provides
 		the number to the closest initiator and access1 provides the
 		number to the closest CPU.
+
+
+What:		/sys/bus/cxl/devices/nvdimm-bridge0/ndbusX/nmemY/cxl/dirty_shutdown
+Date:		Feb, 2025
+KernelVersion:	v6.15
+Contact:	linux-cxl@vger.kernel.org
+Description:
+		(RO) The device dirty shutdown count value, which is the number
+		of times the device could have incurred in potential data loss.
+		The count is persistent across power loss and wraps back to 0
+		upon overflow. If this file is not present, the device does not
+		have the necessary support for dirty tracking.
diff --git a/Documentation/driver-api/cxl/maturity-map.rst b/Documentation/driver-api/cxl/maturity-map.rst
index df8e2ac2a320..a2288f9df658 100644
--- a/Documentation/driver-api/cxl/maturity-map.rst
+++ b/Documentation/driver-api/cxl/maturity-map.rst
@@ -130,7 +130,7 @@ Mailbox commands
 * [0] Switch CCI
 * [3] Timestamp
 * [1] PMEM labels
-* [0] PMEM GPF / Dirty Shutdown
+* [3] PMEM GPF / Dirty Shutdown
 * [0] Scan Media
 
 PMU