Changes in Makefile

bb0bc49a1cef574646eb25d74709c5ff200903a8 - Merge tag 'libnvdimm-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Tue, 21 Apr 2026 23:12:01 +0200

Merge tag 'libnvdimm-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmPull dax updates from Ira Weiny: "The series adds DAX support required for the upcoming fuse/famfs file system.[1] The support here is required because famfs is backed by devdax rather than pmem. This all lays the groundwork for using shared memory as a file system"Link: https://lore.kernel.org/all/0100019d43e5f632-f5862a3e-361c-4b54-a9a6-96c242a8f17a-000000@email.amazonses.com/ [1]* tag 'libnvdimm-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: dax/fsdev: fix uninitialized kaddr in fsdev_dax_zero_page_range() dax: export dax_dev_get() dax: Add fs_dax_get() func to prepare dax for fs-dax usage dax: Add dax_set_ops() for setting dax_operations at bind time dax: Add dax_operations for use by fs-dax on fsdev dax dax: Save the kva from memremap dax: add fsdev.c driver for fs-dax on character dax dax: Factor out dax_folio_reset_order() helper dax: move dax_pgoff_to_phys from [drivers/dax/] device.c to bus.c List of files: /linux/drivers/dax/Makefile

12bffaef28820e0b94c644c75708195c61af78f7 - Merge tag 'cxl-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl

Sat, 18 Apr 2026 00:52:58 +0200

Merge tag 'cxl-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxlPull CXL (Compute Express Link) updates from Dave Jiang: "The significant change of interest is the handling of soft reserved memory conflict between CXL and HMEM. In essence CXL will be the first to claim the soft reserved memory ranges that belongs to CXL and attempt to enumerate them with best effort. If CXL is not able to enumerate the ranges it will punt them to HMEM. There are also MAINTAINERS email changes from Dan Williams and Jonathan Cameron"* tag 'cxl-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (37 commits) MAINTAINERS: Update Jonathan Cameron's email address cxl/hdm: Add support for 32 switch decoders MAINTAINERS: Update address for Dan Williams tools/testing/cxl: Enable replay of user regions as auto regions cxl/region: Add a region sysfs interface for region lock status tools/testing/cxl: Test dax_hmem takeover of CXL regions tools/testing/cxl: Simulate auto-assembly failure dax/hmem: Parent dax_hmem devices dax/hmem: Fix singleton confusion between dax_hmem_work and hmem devices dax/hmem: Reduce visibility of dax_cxl coordination symbols cxl/region: Constify cxl_region_resource_contains() cxl/region: Limit visibility of cxl_region_contains_resource() dax/cxl: Fix HMEM dependencies cxl/region: Fix use-after-free from auto assembly failure cxl/core: Check existence of cxl_memdev_state in poison test cxl/core: use cleanup.h for devm_cxl_add_dax_region cxl/core/region: move dax region device logic into region_dax.c cxl/core/region: move pmem region driver logic into region_pmem.c dax/hmem, cxl: Defer and resolve Soft Reserved ownership cxl/region: Add helper to check Soft Reserved containment by CXL regions ... List of files: /linux/drivers/dax/Makefile

303d32843b831ba86c28aea188db95da65d88f31 - Merge branch 'for-7.1/dax-hmem' into cxl-for-next

Fri, 03 Apr 2026 21:21:27 +0200

Merge branch 'for-7.1/dax-hmem' into cxl-for-nextThe series addresses conflicts between HMEM and CXL when handling SoftReserved memory ranges. CXL will try best effort in claiming the SoftReserved memory region that are CXL regions. If fails, it will puntback to HMEM.tools/testing/cxl: Test dax_hmem takeover of CXL regionstools/testing/cxl: Simulate auto-assembly failuredax/hmem: Parent dax_hmem devicesdax/hmem: Fix singleton confusion between dax_hmem_work and hmem devicesdax/hmem: Reduce visibility of dax_cxl coordination symbolscxl/region: Constify cxl_region_resource_contains()cxl/region: Limit visibility of cxl_region_contains_resource()dax/cxl: Fix HMEM dependenciescxl/region: Fix use-after-free from auto assembly failuredax/hmem, cxl: Defer and resolve Soft Reserved ownershipcxl/region: Add helper to check Soft Reserved containment by CXL regionsdax: Track all dax_region allocations under a global resource treedax/cxl, hmem: Initialize hmem early and defer dax_cxl bindingdax/hmem: Gate Soft Reserved deferral on DEV_DAX_CXLdax/hmem: Request cxl_acpi and cxl_pci before walking Soft Reserved rangesdax/hmem: Factor HMEM registration into __hmem_register_device()dax/bus: Use dax_region_put() in alloc_dax_region() error path List of files: /linux/drivers/dax/Makefile

d5406bd458b0ac10b1301a4d5801d85c8f648637 - dax: add fsdev.c driver for fs-dax on character dax

Fri, 27 Mar 2026 22:04:35 +0100

dax: add fsdev.c driver for fs-dax on character daxThe new fsdev driver provides pages/folios initialized compatibly withfsdax - normal rather than devdax-style refcounting, and starting outwith order-0 folios.When fsdev binds to a daxdev, it is usually (always?) switching from thedevdax mode (device.c), which pre-initializes compound folios accordingto its alignment. Fsdev uses fsdev_clear_folio_state() to switch thefolios into a fsdax-compatible state.A side effect of this is that raw mmap doesn't (can't?) work on an fsdevdax instance. Accordingly, The fsdev driver does not provide raw mmap -devices must be put in 'devdax' mode (drivers/dax/device.c) to get rawmmap capability.In this commit is just the framework, which remaps pages/folios compatiblywith fsdax.Enabling dax changes:- bus.h: add DAXDRV_FSDEV_TYPE driver type- bus.c: allow DAXDRV_FSDEV_TYPE drivers to bind to daxdevs- dax.h: prototype inode_dax(), which fsdev needsSuggested-by: Dan Williams Suggested-by: Gregory Price Reviewed-by: Jonathan Cameron Signed-off-by: John Groves Link: https://patch.msgid.link/0100019d311cf904-419e9526-bdaf-4daa-97f1-5060b31a5c9f-000000@email.amazonses.comSigned-off-by: Ira Weiny List of files: /linux/drivers/dax/Makefile

39aa1d4be12bf9f685adaa06aa2d997c1c611b16 - dax/cxl, hmem: Initialize hmem early and defer dax_cxl binding

Sun, 22 Mar 2026 20:53:38 +0100

dax/cxl, hmem: Initialize hmem early and defer dax_cxl bindingMove hmem/ earlier in the dax Makefile so that hmem_init() runs beforedax_cxl.In addition, defer registration of the dax_cxl driver to a workqueueinstead of using module_cxl_driver(). This ensures that dax_hmem hasan opportunity to initialize and register its deferred callback and makeownership decisions before dax_cxl begins probing and claiming SoftReserved ranges.Mark the dax_cxl driver as PROBE_PREFER_ASYNCHRONOUS so its probe runsout of line from other synchronous probing avoiding orderingdependencies while coordinating ownership decisions with dax_hmem.Signed-off-by: Smita Koralahalli Reviewed-by: Dave Jiang Reviewed-by: Jonathan Cameron Tested-by: Tomasz Wolski Link: https://patch.msgid.link/20260322195343.206900-6-Smita.KoralahalliChannabasappa@amd.comSigned-off-by: Dan Williams Signed-off-by: Dave Jiang List of files: /linux/drivers/dax/Makefile

9a87ffc99ec8eb8d35eed7c4f816d75f5cc9662e - Merge branch 'next' into for-linus

Tue, 02 May 2023 00:20:08 +0200

Merge branch 'next' into for-linusPrepare input updates for 6.4 merge window. List of files: /linux/drivers/dax/Makefile

cdc780f044a803aff8845b949f800f0f3d095d5f - Merge branch 'for-6.4/amd-sfh' into for-linus

Wed, 26 Apr 2023 22:52:34 +0200

Merge branch 'for-6.4/amd-sfh' into for-linus- assorted functional fixes for amd-sfh driver (Basavaraj Natikar) List of files: /linux/drivers/dax/Makefile

ea68a3e9d14e9e0bf017d178fb4bd53b6deb1482 - Merge drm/drm-next into drm-intel-gt-next

Tue, 11 Apr 2023 14:43:45 +0200

Merge drm/drm-next into drm-intel-gt-nextNeed to pull in commit from drm-next (earlier in drm-intel-next):1eca0778f4b3 ("drm/i915: add struct i915_dsm to wrap dsm members together")In order to merge following patch to drm-intel-gt-next:https://patchwork.freedesktop.org/patch/530942/?series=114925&rev=6Signed-off-by: Joonas Lahtinen List of files: /linux/drivers/dax/Makefile

cecdd52a3dd312564f81a39df08378b7b39a2654 - Merge drm/drm-next into drm-intel-next

Tue, 28 Mar 2023 16:30:57 +0200

Merge drm/drm-next into drm-intel-nextCatch up with 6.3-rc cycle...Signed-off-by: Rodrigo Vivi List of files: /linux/drivers/dax/Makefile

e752ab11dcb48353727ea26eefd740155e028865 - Merge remote-tracking branch 'drm/drm-next' into msm-next

Mon, 20 Mar 2023 18:31:25 +0100

Merge remote-tracking branch 'drm/drm-next' into msm-nextMerge drm-next into msm-next to pick up external clk and PM dependenciesfor improved a6xx GPU reset sequence.Signed-off-by: Rob Clark List of files: /linux/drivers/dax/Makefile

d26a3a6ce7e02f9c056ad992bcd9624735022337 - Merge tag 'v6.3-rc2' into next

Fri, 17 Mar 2023 12:01:30 +0100

Merge tag 'v6.3-rc2' into nextMerge with mainline to get of_property_present() and other newer APIs. List of files: /linux/drivers/dax/Makefile

b3c9a04135bdbd3aabd5e9534bad0fe6df505f8a - Merge drm/drm-fixes into drm-misc-fixes

Mon, 13 Mar 2023 10:14:05 +0100

Merge drm/drm-fixes into drm-misc-fixesBackmerging to get latest upstream.Signed-off-by: Thomas Zimmermann List of files: /linux/drivers/dax/Makefile

a1eccc574f977bd21a4ec8ac54bd73a2756bd281 - Merge drm/drm-next into drm-misc-next

Mon, 13 Mar 2023 09:27:50 +0100

Merge drm/drm-next into drm-misc-nextBackmerging to get v6.3-rc1 and sync with the other DRM trees.Signed-off-by: Thomas Zimmermann List of files: /linux/drivers/dax/Makefile

b8fa3e3833c14151a47ebebbc5427dcfe94bb407 - Merge remote-tracking branch 'acme/perf-tools' into perf-tools-next

Fri, 10 Mar 2023 22:43:17 +0100

Merge remote-tracking branch 'acme/perf-tools' into perf-tools-nextTo pick up perf-tools fixes just merged upstream.Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/drivers/dax/Makefile

7c3dc440b1f5c75f45e24430f913e561dc82a419 - Merge tag 'cxl-for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl

Sat, 25 Feb 2023 18:19:23 +0100

Merge tag 'cxl-for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxlPull Compute Express Link (CXL) updates from Dan Williams: "To date Linux has been dependent on platform-firmware to map CXL RAM regions and handle events / errors from devices. With this update we can now parse / update the CXL memory layout, and report events / errors from devices. This is a precursor for the CXL subsystem to handle the end-to-end "RAS" flow for CXL memory. i.e. the flow that for DDR-attached-DRAM is handled by the EDAC driver where it maps system physical address events to a field-replaceable-unit (FRU / endpoint device). In general, CXL has the potential to standardize what has historically been a pile of memory-controller-specific error handling logic. Another change of note is the default policy for handling RAM-backed device-dax instances. Previously the default access mode was "device", mmap(2) a device special file to access memory. The new default is "kmem" where the address range is assigned to the core-mm via add_memory_driver_managed(). This saves typical users from wondering why their platform memory is not visible via free(1) and stuck behind a device-file. At the same time it allows expert users to deploy policy to, for example, get dedicated access to high performance memory, or hide low performance memory from general purpose kernel allocations. This affects not only CXL, but also systems with high-bandwidth-memory that platform-firmware tags with the EFI_MEMORY_SP (special purpose) designation. Summary: - CXL RAM region enumeration: instantiate 'struct cxl_region' objects for platform firmware created memory regions - CXL RAM region provisioning: complement the existing PMEM region creation support with RAM region support - "Soft Reservation" policy change: Online (memory hot-add) soft-reserved memory (EFI_MEMORY_SP) by default, but still allow for setting aside such memory for dedicated access via device-dax. - CXL Events and Interrupts: Takeover CXL event handling from platform-firmware (ACPI calls this CXL Memory Error Reporting) and export CXL Events via Linux Trace Events. - Convey CXL _OSC results to drivers: Similar to PCI, let the CXL subsystem interrogate the result of CXL _OSC negotiation. - Emulate CXL DVSEC Range Registers as "decoders": Allow for first-generation devices that pre-date the definition of the CXL HDM Decoder Capability to translate the CXL DVSEC Range Registers into 'struct cxl_decoder' objects. - Set timestamp: Per spec, set the device timestamp in case of hotplug, or if platform-firwmare failed to set it. - General fixups: linux-next build issues, non-urgent fixes for pre-production hardware, unit test fixes, spelling and debug message improvements"* tag 'cxl-for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (66 commits) dax/kmem: Fix leak of memory-hotplug resources cxl/mem: Add kdoc param for event log driver state cxl/trace: Add serial number to trace points cxl/trace: Add host output to trace points cxl/trace: Standardize device information output cxl/pci: Remove locked check for dvsec_range_allowed() cxl/hdm: Add emulation when HDM decoders are not committed cxl/hdm: Create emulated cxl_hdm for devices that do not have HDM decoders cxl/hdm: Emulate HDM decoder from DVSEC range registers cxl/pci: Refactor cxl_hdm_decode_init() cxl/port: Export cxl_dvsec_rr_decode() to cxl_port cxl/pci: Break out range register decoding from cxl_hdm_decode_init() cxl: add RAS status unmasking for CXL cxl: remove unnecessary calling of pci_enable_pcie_error_reporting() dax/hmem: build hmem device support as module if possible dax: cxl: add CXL_REGION dependency cxl: avoid returning uninitialized error code cxl/pmem: Fix nvdimm registration races cxl/mem: Fix UAPI command comment cxl/uapi: Tag commands from cxl_query_cmd() ... List of files: /linux/drivers/dax/Makefile

b8b9ffced017528bcdd262730ab10bc5084c3bb4 - Merge branch 'for-6.3/cxl-ram-region' into cxl/next

Sat, 11 Feb 2023 03:11:01 +0100

Merge branch 'for-6.3/cxl-ram-region' into cxl/nextInclude the support for enumerating and provisioning ram regions forv6.3. This also include a default policy change for ram / volatiledevice-dax instances to assign them to the dax_kmem driver by default. List of files: /linux/drivers/dax/Makefile

09d09e04d2fcf88c4620dd28097e0e2a8f720eac - cxl/dax: Create dax devices for CXL RAM regions

Fri, 10 Feb 2023 10:07:19 +0100

cxl/dax: Create dax devices for CXL RAM regionsWhile platform firmware takes some responsibility for mapping the RAMcapacity of CXL devices present at boot, the OS is responsible formapping the remainder and hot-added devices. Platform firmware is alsoresponsible for identifying the platform general purpose memory pool,typically DDR attached DRAM, and arranging for the remainder to be 'SoftReserved'. That reservation allows the CXL subsystem to route the memoryto core-mm via memory-hotplug (dax_kmem), or leave it for dedicatedaccess (device-dax).The new 'struct cxl_dax_region' object allows for a CXL memory resource(region) to be published, but also allow for udev and module policy toact on that event. It also prevents cxl_core.ko from having a moduleloading dependency on any drivers/dax/ modules.Tested-by: Fan Ni Reviewed-by: Dave Jiang Reviewed-by: Jonathan Cameron Link: https://lore.kernel.org/r/167602003896.1924368.10335442077318970468.stgit@dwillia2-xfh.jf.intel.comSigned-off-by: Dan Williams List of files: /linux/drivers/dax/Makefile

03ab8e6297acd1bc0eedaa050e2a1635c576fd11 - Merge tag 'v5.18'

Tue, 31 May 2022 15:13:23 +0200

Merge tag 'v5.18'Linux 5.18 List of files: /linux/drivers/dax/Makefile

de4fb176622d54a82ea3ceb7362392aaf5ff0b5a - Merge branches 'fixes' and 'misc' into for-linus

Fri, 01 Apr 2022 17:12:31 +0200

Merge branches 'fixes' and 'misc' into for-linus List of files: /linux/drivers/dax/Makefile

b690490d6d466972ade172ee2e7f6ffa49e7e910 - Merge branch 'for-5.18/amd-sfh' into for-linus

Wed, 23 Mar 2022 09:58:40 +0100

Merge branch 'for-5.18/amd-sfh' into for-linus- dead code elimination (Christophe JAILLET) List of files: /linux/drivers/dax/Makefile