Changes in Makefile

d142ab35ee0b7f9e84115fe3e4c3de4a9ac35f5e - Merge tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux

Tue, 14 Apr 2026 02:36:04 +0200

Merge tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linuxPull CRC updates from Eric Biggers: - Several improvements related to crc_kunit, to align with the standard KUnit conventions and make it easier for developers and CI systems to run this test suite - Add an arm64-optimized implementation of CRC64-NVME - Remove unused code for big endian arm64* tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: lib/crc: arm64: Simplify intrinsics implementation lib/crc: arm64: Use existing macros for kernel-mode FPU cflags lib/crc: arm64: Drop unnecessary chunking logic from crc64 lib/crc: arm64: Assume a little-endian kernel lib/crc: arm64: add NEON accelerated CRC64-NVMe implementation lib/crc: arm64: Drop check for CONFIG_KERNEL_MODE_NEON crypto: crc32c - Remove another outdated comment crypto: crc32c - Remove more outdated usage information kunit: configs: Enable all CRC tests in all_tests.config lib/crc: tests: Add a .kunitconfig file lib/crc: tests: Add CRC_ENABLE_ALL_FOR_KUNIT lib/crc: tests: Make crc_kunit test only the enabled CRC variants List of files: /linux/lib/crc/Makefile

f956dc813144baf8bd2d77eec61b90bc00c10894 - lib/crc: arm64: Use existing macros for kernel-mode FPU cflags

Mon, 30 Mar 2026 16:46:33 +0200

lib/crc: arm64: Use existing macros for kernel-mode FPU cflagsUse the existing CC_FPU_CFLAGS and CC_NO_FPU_CFLAGS to pass theappropriate compiler command line options for building kernel mode NEONintrinsics code. This is tidier, and will make it easier to reuse thecode for 32-bit ARM.Signed-off-by: Ard Biesheuvel Link: https://lore.kernel.org/r/20260330144630.33026-9-ardb@kernel.orgSigned-off-by: Eric Biggers List of files: /linux/lib/crc/Makefile

63432fd625372a0e79fb00a4009af204f4edc013 - lib/crc: arm64: add NEON accelerated CRC64-NVMe implementation

Sun, 29 Mar 2026 09:43:38 +0200

lib/crc: arm64: add NEON accelerated CRC64-NVMe implementationImplement an optimized CRC64 (NVMe) algorithm for ARM64 using NEONPolynomial Multiply Long (PMULL) instructions. The generic shift-and-XORsoftware implementation is slow, which creates a bottleneck in NVMe andother storage subsystems.The acceleration is implemented using C intrinsics () ratherthan raw assembly for better readability and maintainability.Key highlights of this implementation:- Uses 4KB chunking inside scoped_ksimd() to avoid preemption latency spikes on large buffers.- Pre-calculates and loads fold constants via vld1q_u64() to minimize register spilling.- Benchmarks show the break-even point against the generic implementation is around 128 bytes. The PMULL path is enabled only for len >= 128.Performance results (kunit crc_benchmark on Cortex-A72):- Generic (len=4096): ~268 MB/s- PMULL (len=4096): ~1556 MB/s (nearly 6x improvement)Signed-off-by: Demian Shulhan Link: https://lore.kernel.org/r/20260329074338.1053550-1-demyansh@gmail.comSigned-off-by: Eric Biggers List of files: /linux/lib/crc/Makefile

cb9f145f638d7afa633632a9290d6ad06caeb8ee - Merge remote-tracking branch 'drm/drm-next' into msm-next-robclark

Sat, 01 Nov 2025 13:47:30 +0100

Merge remote-tracking branch 'drm/drm-next' into msm-next-robclarkBack-merge drm-next to get caught up.Signed-off-by: Rob Clark List of files: /linux/lib/crc/Makefile

f088104d837a991c65e51fa30bb4196169b3244d - Merge drm/drm-next into drm-intel-gt-next

Tue, 16 Sep 2025 12:53:20 +0200

Merge drm/drm-next into drm-intel-gt-nextBackmerge in order to get the commit: 048832a3f400 ("drm/i915: Refactor shmem_pwrite() to use kiocb and write_iter")To drm-intel-gt-next as there are followup fixes to be applied.Signed-off-by: Joonas Lahtinen List of files: /linux/lib/crc/Makefile

a53d0cf7f1cb3182ad533ff5cacfa5fd29c419ad - Merge commit 'linus' into core/bugs, to resolve conflicts

Tue, 05 Aug 2025 11:15:34 +0200

Merge commit 'linus' into core/bugs, to resolve conflictsResolve conflicts with this commit that was developed in parallelduring the merge window: 8c8efa93db68 ("x86/bug: Add ARCH_WARN_ASM macro for BUG/WARN asm code sharing with Rust") Conflicts: arch/riscv/include/asm/bug.h arch/x86/include/asm/bug.hSigned-off-by: Ingo Molnar List of files: /linux/lib/crc/Makefile

8b87f67b4c87452e21721887fa8dec1f4c6b2b7c - Merge branch 'next' into for-linus

Wed, 08 Oct 2025 06:53:13 +0200

Merge branch 'next' into for-linusPrepare input updates for 6.18 merge window. List of files: /linux/lib/crc/Makefile

4b051897df2375414587a245ecb9bb1a4d26b3b8 - Merge tag 'v6.17-rc2' into HEAD

Thu, 21 Aug 2025 20:46:49 +0200

Merge tag 'v6.17-rc2' into HEADSync up with mainline to bring in changes to include/linux/sprintf.h List of files: /linux/lib/crc/Makefile

b4d90dbc4c1bc4bd3eb2d2989330af0eb95c98e8 - Merge drm/drm-next into drm-misc-next-fixes

Mon, 15 Sep 2025 10:23:28 +0200

Merge drm/drm-next into drm-misc-next-fixesBackmerging to drm-misc-next-fixes to get features and fixes fromv6.17-rc6.Signed-off-by: Thomas Zimmermann List of files: /linux/lib/crc/Makefile

702fdf3513b045f596f836d9a4b8672c76f11834 - Merge drm/drm-next into drm-intel-next

Wed, 10 Sep 2025 14:01:42 +0200

Merge drm/drm-next into drm-intel-nextCatching up with some display dependencies.Signed-off-by: Rodrigo Vivi List of files: /linux/lib/crc/Makefile

ca994e8922f25f7fed2075098f185cf198109eaa - Merge drm/drm-next into drm-xe-next

Tue, 12 Aug 2025 14:58:37 +0200

Merge drm/drm-next into drm-xe-nextBring v6.17-rc1 to propagate commits from other subsystems, particularlyPCI, which has some new functions needed for SR-IOV integration.Signed-off-by: Lucas De Marchi List of files: /linux/lib/crc/Makefile

08c51f5bddc81c8c97c1eb11861b0dc009e5ccd8 - Merge drm/drm-next into drm-misc-n

Mon, 11 Aug 2025 14:37:45 +0200

Merge drm/drm-next into drm-misc-nUpdating drm-misc-next to the state of v6.17-rc1. Begins a new releasecycle.Signed-off-by: Thomas Zimmermann List of files: /linux/lib/crc/Makefile

8d2b0853add1d7534dc0794e3c8e0b9e8c4ec640 - Merge drm/drm-fixes into drm-misc-fixes

Mon, 11 Aug 2025 16:49:06 +0200

Merge drm/drm-fixes into drm-misc-fixesUpdating drm-misc-fixes to the state of v6.17-rc1. Begins a new releasecycle.Signed-off-by: Thomas Zimmermann List of files: /linux/lib/crc/Makefile

a578dd095dfe8b56c167201d9aea43e47d27f807 - Merge tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux

Tue, 29 Jul 2025 02:43:29 +0200

Merge tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linuxPull CRC updates from Eric Biggers: - Reorganize the architecture-optimized CRC code It now lives in lib/crc/$(SRCARCH)/ rather than arch/$(SRCARCH)/lib/, and it is no longer artificially split into separate generic and arch modules. This allows better inlining and dead code elimination The generic CRC code is also no longer exported, simplifying the API. (This mirrors the similar changes to SHA-1 and SHA-2 in lib/crypto/, which can be found in the "Crypto library updates" pull request) - Improve crc32c() performance on newer x86_64 CPUs on long messages by enabling the VPCLMULQDQ optimized code - Simplify the crypto_shash wrappers for crc32_le() and crc32c() Register just one shash algorithm for each that uses the (fully optimized) library functions, instead of unnecessarily providing direct access to the generic CRC code - Remove unused and obsolete drivers for hardware CRC engines - Remove CRC-32 combination functions that are no longer used - Add kerneldoc for crc32_le(), crc32_be(), and crc32c() - Convert the crc32() macro to an inline function* tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (26 commits) lib/crc: x86/crc32c: Enable VPCLMULQDQ optimization where beneficial lib/crc: x86: Reorganize crc-pclmul static_call initialization lib/crc: crc64: Add include/linux/crc64.h to kernel-api.rst lib/crc: crc32: Change crc32() from macro to inline function and remove cast nvmem: layouts: Switch from crc32() to crc32_le() lib/crc: crc32: Document crc32_le(), crc32_be(), and crc32c() lib/crc: Explicitly include lib/crc: Remove ARCH_HAS_* kconfig symbols lib/crc: x86: Migrate optimized CRC code into lib/crc/ lib/crc: sparc: Migrate optimized CRC code into lib/crc/ lib/crc: s390: Migrate optimized CRC code into lib/crc/ lib/crc: riscv: Migrate optimized CRC code into lib/crc/ lib/crc: powerpc: Migrate optimized CRC code into lib/crc/ lib/crc: mips: Migrate optimized CRC code into lib/crc/ lib/crc: loongarch: Migrate optimized CRC code into lib/crc/ lib/crc: arm64: Migrate optimized CRC code into lib/crc/ lib/crc: arm: Migrate optimized CRC code into lib/crc/ lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/ lib/crc: Move files into lib/crc/ lib/crc32: Remove unused combination support ... List of files: /linux/lib/crc/Makefile

b10749d89f5405d7c0319b86ad92a47ccc5ce00c - lib/crc: x86: Migrate optimized CRC code into lib/crc/

Sat, 07 Jun 2025 22:04:53 +0200

lib/crc: x86: Migrate optimized CRC code into lib/crc/Move the x86-optimized CRC code from arch/x86/lib/crc* into its newlocation in lib/crc/x86/, and wire it up in the new way. This new wayof organizing the CRC code eliminates the need to artificially split thecode for each CRC variant into separate arch and generic modules,enabling better inlining and dead code elimination. For more details,see "lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/".Reviewed-by: "Martin K. Petersen" Acked-by: Ingo Molnar Acked-by: "Jason A. Donenfeld" Link: https://lore.kernel.org/r/20250607200454.73587-12-ebiggers@kernel.orgSigned-off-by: Eric Biggers List of files: /linux/lib/crc/Makefile

9b2d720e8ac4b68043ef23820ff9210fa12ea50d - lib/crc: sparc: Migrate optimized CRC code into lib/crc/

Sat, 07 Jun 2025 22:04:52 +0200

lib/crc: sparc: Migrate optimized CRC code into lib/crc/Move the sparc-optimized CRC code from arch/sparc/lib/crc* into its newlocation in lib/crc/sparc/, and wire it up in the new way. This new wayof organizing the CRC code eliminates the need to artificially split thecode for each CRC variant into separate arch and generic modules,enabling better inlining and dead code elimination. For more details,see "lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/".Reviewed-by: "Martin K. Petersen" Acked-by: Ingo Molnar Acked-by: "Jason A. Donenfeld" Link: https://lore.kernel.org/r/20250607200454.73587-11-ebiggers@kernel.orgSigned-off-by: Eric Biggers List of files: /linux/lib/crc/Makefile

2374bf23864932eb32ff209aaf6b82b569d61b2a - lib/crc: s390: Migrate optimized CRC code into lib/crc/

Sat, 07 Jun 2025 22:04:51 +0200

lib/crc: s390: Migrate optimized CRC code into lib/crc/Move the s390-optimized CRC code from arch/s390/lib/crc* into its newlocation in lib/crc/s390/, and wire it up in the new way. This new wayof organizing the CRC code eliminates the need to artificially split thecode for each CRC variant into separate arch and generic modules,enabling better inlining and dead code elimination. For more details,see "lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/".Reviewed-by: "Martin K. Petersen" Acked-by: Ingo Molnar Acked-by: "Jason A. Donenfeld" Link: https://lore.kernel.org/r/20250607200454.73587-10-ebiggers@kernel.orgSigned-off-by: Eric Biggers List of files: /linux/lib/crc/Makefile

b5943815e63b859b5b66710e79c9561112c4d01b - lib/crc: riscv: Migrate optimized CRC code into lib/crc/

Sat, 07 Jun 2025 22:04:50 +0200

lib/crc: riscv: Migrate optimized CRC code into lib/crc/Move the riscv-optimized CRC code from arch/riscv/lib/crc* into its newlocation in lib/crc/riscv/, and wire it up in the new way. This new wayof organizing the CRC code eliminates the need to artificially split thecode for each CRC variant into separate arch and generic modules,enabling better inlining and dead code elimination. For more details,see "lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/".Reviewed-by: "Martin K. Petersen" Acked-by: Ingo Molnar Acked-by: "Jason A. Donenfeld" Link: https://lore.kernel.org/r/20250607200454.73587-9-ebiggers@kernel.orgSigned-off-by: Eric Biggers List of files: /linux/lib/crc/Makefile

190c253d8696b7ba14424c484435ac2d4bcb9ebd - lib/crc: powerpc: Migrate optimized CRC code into lib/crc/

Sat, 07 Jun 2025 22:04:49 +0200

lib/crc: powerpc: Migrate optimized CRC code into lib/crc/Move the powerpc-optimized CRC code from arch/powerpc/lib/crc* into itsnew location in lib/crc/powerpc/, and wire it up in the new way. Thisnew way of organizing the CRC code eliminates the need to artificiallysplit the code for each CRC variant into separate arch and genericmodules, enabling better inlining and dead code elimination. For moredetails, see "lib/crc: Prepare for arch-optimized code in subdirs oflib/crc/".Reviewed-by: "Martin K. Petersen" Acked-by: Ingo Molnar Acked-by: "Jason A. Donenfeld" Link: https://lore.kernel.org/r/20250607200454.73587-8-ebiggers@kernel.orgSigned-off-by: Eric Biggers List of files: /linux/lib/crc/Makefile

2b7531b2a2037959ac81ff2c95e4557b30cfd253 - lib/crc: arm64: Migrate optimized CRC code into lib/crc/

Sat, 07 Jun 2025 22:04:46 +0200

lib/crc: arm64: Migrate optimized CRC code into lib/crc/Move the arm64-optimized CRC code from arch/arm64/lib/crc* into its newlocation in lib/crc/arm64/, and wire it up in the new way. This new wayof organizing the CRC code eliminates the need to artificially split thecode for each CRC variant into separate arch and generic modules,enabling better inlining and dead code elimination. For more details,see "lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/".Reviewed-by: "Martin K. Petersen" Acked-by: Ingo Molnar Acked-by: "Jason A. Donenfeld" Link: https://lore.kernel.org/r/20250607200454.73587-5-ebiggers@kernel.orgSigned-off-by: Eric Biggers List of files: /linux/lib/crc/Makefile