Changes in Kbuild

920f27122cbacfd3b540a3f2f67b0145203d5581 - Merge tag 'cxl-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl

Fri, 21 Aug 2026 00:02:09 +0200

Merge tag 'cxl-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxlPull CXL updates from Dave Jiang: "This includes the remaining patches to complete the basic support for CXL type2 (accelerators) drivers by the CXL core. A set of unit testing support to catch regressions for the CXL core type2 exported functions has also been added. The actual CXL type 2 driver support for the AMD Solarflare NIC driver has been picked up by net-dev. A set of preparatory patches has been picked up from the CXL port error handling series in order to reduce the number of patches in that series for review. The rest of that series is getting close to be merged but was not ready for the 7.3 merge window. There are also a number of misc patches and a large number of bug fixes against pre-existing issues flagged by sashiko reviews as contributors post new patches on the mailing list. We will continue to work through the sashiko raised issues as they show up."* tag 'cxl-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (35 commits) cxl/Documentation: Spell out globbed sysfs attribute names cxl: Rename find_cxl_port() to find_cxl_port_by_dport() cxl: Tighten CPER kfifo registration API and symbol visibility acpi/apei/ghes: Use raw_spinlock_t for CXL CPER work locks cxl/ras: Fix cxl_rch_get_aer_severity() wrong severity register cxl/ras: Fix cxl_rch_get_aer_info() out-of-bounds AER register read cxl/test: Assign one mock memdev a full-width serial number cxl/core: Format the memdev serial number as unsigned in TP_printk cxl/pmem: Format the nvdimm serial number as unsigned decimal cxl: Use %pe to print error pointers cxl/region: Use __free(put_device) in find_pos_and_ways() cxl/region: Fix use-after-free in find_pos_and_ways() error path cxl: Deny Features commands on the RAW mailbox path cxl/features: Clamp Get Feature output size to the remaining buffer cxl/features: Reject Set Features output buffer smaller than the header cxl/features: Reject Get Feature count larger than the output buffer cxl/port: Restart port enumeration when a sibling adds the dport first cxl/features: Serialize multi-part Get/Set Feature transfers cxl/pci: Honor -EPROBE_DEFER from component register setup cxl/mbox: Break poison list loop on an empty payload ... List of files: /linux/tools/testing/cxl/test/Kbuild

884d6a4fad29c59f7b79f8593662424355ee8841 - Merge branch 'for-7.3/cxl-type2-test' into cxl-for-next

Fri, 24 Jul 2026 19:10:04 +0200

Merge branch 'for-7.3/cxl-type2-test' into cxl-for-nextcxl_test support for type2cxl/test: Rework cxl_type2_mem_init() to use cxl_mock_platform_device_add()cxl/test: Add cxl_test accelerator drivercxl/test: Fixup hdm init for auto region to support type2cxl/test: Propagate -ENOMEM on platform_device_alloc() failurescxl/test: Add hierarchy enumeration support for type2 devicecxl/test: Refactor platform device enumerationscxl/test: Add type2 support for mock CFMWS0cxl/test: Add test for module parameters List of files: /linux/tools/testing/cxl/test/Kbuild

1c6b4ceafc3b994871c29340e0c1ddb0af5800e7 - cxl/test: Add cxl_test accelerator driver

Tue, 30 Jun 2026 00:11:04 +0200

cxl/test: Add cxl_test accelerator driverAdd a type2 accelerator mock driver for the platform device thatsimulates a CXL type2 device. The driver exercises the sameminimal API calls that a real CXL type2 driver would utilize.Tested-by: Alison Schofield Reviewed-by: Alison Schofield Link: https://patch.msgid.link/20260629221104.3891733-8-dave.jiang@intel.comSigned-off-by: Dave Jiang List of files: /linux/tools/testing/cxl/test/Kbuild

7a0e692a0381254b2f77c54dec100cd3325a6fdf - Merge branch 'next' into for-linus

Tue, 23 Jun 2026 08:10:08 +0200

Merge branch 'next' into for-linusPrepare input updates for 7.2 merge window. List of files: /linux/tools/testing/cxl/test/Kbuild

aa776949fb77462ee712eee28bc54a9ce95c5b40 - Merge branch 'for-7.2/wiimote' into for-linus

Tue, 16 Jun 2026 21:47:16 +0200

Merge branch 'for-7.2/wiimote' into for-linus List of files: /linux/tools/testing/cxl/test/Kbuild

fff88709f9a9153af85b5224b4594caa5387ca60 - Merge tag 'v7.1-rc6' into next

Mon, 01 Jun 2026 04:43:25 +0200

Merge tag 'v7.1-rc6' into nextSync up with mainline to pull in a fix to IMS PCU driver and otherenhancements. List of files: /linux/tools/testing/cxl/test/Kbuild

639609b83f69fe4cd08e01423ae8e12d84484cfa - Merge branch 'arena_direct_access' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next into for-7.2

Mon, 25 May 2026 21:34:24 +0200

Merge branch 'arena_direct_access' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next into for-7.2 List of files: /linux/tools/testing/cxl/test/Kbuild

5c8cbca290acdd49a694b36c0af76ba0c00bbf12 - Merge branch '20260507-ubwc-rework-v4-4-c19593d20c1d@oss.qualcomm.com' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into HEAD

Thu, 21 May 2026 22:36:50 +0200

Merge branch '20260507-ubwc-rework-v4-4-c19593d20c1d@oss.qualcomm.com' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into HEADMerge the branch with the soc/qcom changes, required for the next UBWCpatches.Signed-off-by: Dmitry Baryshkov List of files: /linux/tools/testing/cxl/test/Kbuild

09d6818d3bdc1ea6e49a425040528cbdbc97bc0a - Merge branch 'linus' into timers/clocksource

Mon, 18 May 2026 11:01:07 +0200

Merge branch 'linus' into timers/clocksource... to bring it up to date for new changes. List of files: /linux/tools/testing/cxl/test/Kbuild

658a6021492ad3b1b8a6e9a83963a1fad35a2af8 - Merge drm/drm-next into drm-intel-next

Fri, 15 May 2026 13:01:15 +0200

Merge drm/drm-next into drm-intel-nextSome Display Port Adaptive Sync depends on drm work.Signed-off-by: Rodrigo Vivi List of files: /linux/tools/testing/cxl/test/Kbuild

8edf8b09fc44990977b3fbcb708035b1740d0b7e - Merge drm/drm-next into drm-intel-gt-next

Tue, 12 May 2026 10:16:35 +0200

Merge drm/drm-next into drm-intel-gt-nextBackmerging to pull in commit 5401b9adebc9 ("i915: don't usea vma that didn't match the context VM") to revert it.Signed-off-by: Joonas Lahtinen List of files: /linux/tools/testing/cxl/test/Kbuild

c53ed3e99920df6a90553c89a1c053aa0776841e - Merge drm/drm-next into drm-xe-next

Fri, 08 May 2026 16:19:45 +0200

Merge drm/drm-next into drm-xe-nextBringing in recent display changes.Signed-off-by: Thomas Hellström List of files: /linux/tools/testing/cxl/test/Kbuild

cafac16b6207b88ad92fbba1169ae4f43865cb0d - Merge drm/drm-next into drm-misc-next

Mon, 27 Apr 2026 10:49:13 +0200

Merge drm/drm-next into drm-misc-nextGetting fixes and updates from v7.1-rc1.Signed-off-by: Thomas Zimmermann List of files: /linux/tools/testing/cxl/test/Kbuild

9c9fe04e0fe3fdba7d4aafffa9b7bbb21f6fcbe1 - Merge tag 'v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into gpio/for-next

Mon, 27 Apr 2026 09:39:48 +0200

Merge tag 'v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into gpio/for-nextLinux 7.1-rc1 List of files: /linux/tools/testing/cxl/test/Kbuild

0fc8f6200d2313278fbf4539bbab74677c685531 - Merge drm/drm-fixes into drm-misc-fixes

Mon, 27 Apr 2026 10:26:49 +0200

Merge drm/drm-fixes into drm-misc-fixesGetting fixes and updates from v7.1-rc1.Signed-off-by: Thomas Zimmermann List of files: /linux/tools/testing/cxl/test/Kbuild

f4b369c6fe0ceaba2da2daff8c9eb415f85926dd - Merge branch 'next' into for-linus

Mon, 20 Apr 2026 03:28:57 +0200

Merge branch 'next' into for-linusPrepare input updates for 7.1 merge window. List of files: /linux/tools/testing/cxl/test/Kbuild

0421ccdfad0d92713a812a5aeb7d07b0ea7213c8 - Merge tag 'v7.0-rc3' into next

Thu, 12 Mar 2026 18:44:42 +0100

Merge tag 'v7.0-rc3' into nextSync up with the mainline to brig up the latest changes, specificallychanges to ALPS driver. List of files: /linux/tools/testing/cxl/test/Kbuild

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/tools/testing/cxl/test/Kbuild

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/tools/testing/cxl/test/Kbuild

549b5c12ef06441dbde4718f16e23c547f5592d7 - tools/testing/cxl: Test dax_hmem takeover of CXL regions

Fri, 27 Mar 2026 06:28:21 +0100

tools/testing/cxl: Test dax_hmem takeover of CXL regionsWhen platform firmware is committed to publishing EFI_CONVENTIONAL_MEMORYin the memory map, but CXL fails to assemble the region, dax_hmem canattempt to attach a dax device to the memory range.Take advantage of the new ability to support multiple "hmem_platform"devices, and to enable regression testing of several scenarios:* CXL correctly assembles a region, check dax_hmem fails to attach dax* CXL fails to assemble a region, check dax_hmem successfully attaches dax* Check that loading the dax_cxl driver loads the dax_hmem driver* Attempt to race cxl_mock_mem async probe vs dax_hmem probe flushing. Check that both positive and negative cases.Signed-off-by: Dan Williams Reviewed-by: Ira Weiny Reviewed-by: Dave Jiang Reviewed-by: Alison Schofield Tested-by: Alison Schofield Link: https://patch.msgid.link/20260327052821.440749-10-dan.j.williams@intel.comSigned-off-by: Dave Jiang List of files: /linux/tools/testing/cxl/test/Kbuild