Changes in Kconfig

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/lib/crc/Kconfig

ff57d59200baadfdb41f94a49fed7d161a9a8124 - Merge tag 'loongarch-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Fri, 24 Apr 2026 18:54:45 +0200

Merge tag 'loongarch-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongsonPull LoongArch updates from Huacai Chen: - Adjust build infrastructure for 32BIT/64BIT - Add HIGHMEM (PKMAP and FIX_KMAP) support - Show and handle CPU vulnerabilites correctly - Batch the icache maintenance for jump_label - Add more atomic instructions support for BPF JIT - Add more features (e.g. fsession) support for BPF trampoline - Some bug fixes and other small changes* tag 'loongarch-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (21 commits) selftests/bpf: Enable CAN_USE_LOAD_ACQ_STORE_REL for LoongArch LoongArch: BPF: Add fsession support for trampolines LoongArch: BPF: Introduce emit_store_stack_imm64() helper LoongArch: BPF: Support up to 12 function arguments for trampoline LoongArch: BPF: Support small struct arguments for trampoline LoongArch: BPF: Open code and remove invoke_bpf_mod_ret() LoongArch: BPF: Support load-acquire and store-release instructions LoongArch: BPF: Support 8 and 16 bit read-modify-write instructions LoongArch: BPF: Add the default case in emit_atomic() and rename it LoongArch: Define instruction formats for AM{SWAP/ADD}.{B/H} and DBAR LoongArch: Batch the icache maintenance for jump_label LoongArch: Add flush_icache_all()/local_flush_icache_all() LoongArch: Add spectre boundry for syscall dispatch table LoongArch: Show CPU vulnerabilites correctly LoongArch: Make arch_irq_work_has_interrupt() true only if IPI HW exist LoongArch: Use get_random_canary() for stack canary init LoongArch: Improve the logging of disabling KASLR LoongArch: Align FPU register state to 32 bytes LoongArch: Handle CONFIG_32BIT in syscall_get_arch() LoongArch: Add HIGHMEM (PKMAP and FIX_KMAP) support ... List of files: /linux/lib/crc/Kconfig

3d9aba6618d115750729bba2d1f8af180bd7d3bd - LoongArch: Adjust build infrastructure for 32BIT/64BIT

Wed, 22 Apr 2026 09:44:26 +0200

LoongArch: Adjust build infrastructure for 32BIT/64BITAdjust build infrastructure (Kconfig, Makefile and ld scripts) to letus enable both 32BIT/64BIT kernel build.Reviewed-by: Arnd Bergmann Signed-off-by: Jiaxun Yang Signed-off-by: Huacai Chen List of files: /linux/lib/crc/Kconfig

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/Kconfig

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/Kconfig

6e4d63e8993c681e1cec7d564b4e018e21e658d0 - lib/crc: arm64: Drop check for CONFIG_KERNEL_MODE_NEON

Sat, 14 Mar 2026 18:57:44 +0100

lib/crc: arm64: Drop check for CONFIG_KERNEL_MODE_NEONCONFIG_KERNEL_MODE_NEON is always enabled on arm64, and it always hasbeen since its introduction in 2013. Given that and the fact that theusefulness of kernel-mode NEON has only been increasing over time,checking for this option in arm64-specific code is unnecessary. Removethis check from lib/crc/ to simplify the code and prevent any futurebugs where e.g. code gets disabled due to a typo in this logic.Acked-by: Ard Biesheuvel Link: https://lore.kernel.org/r/20260314175744.30620-1-ebiggers@kernel.orgSigned-off-by: Eric Biggers List of files: /linux/lib/crc/Kconfig

cdf22aeaad8430905c3aa3b3d0f2686c65395c22 - lib/crc: tests: Add CRC_ENABLE_ALL_FOR_KUNIT

Fri, 06 Mar 2026 04:35:56 +0100

lib/crc: tests: Add CRC_ENABLE_ALL_FOR_KUNITNow that crc_kunit uses the standard "depends on" pattern, enabling thefull set of CRC tests is a bit difficult, mainly due to CRC7 beingrarely used. Add a kconfig option to make it easier. It is visibleonly when KUNIT, so hopefully the extra prompt won't be too annoying.Link: https://lore.kernel.org/r/20260306033557.250499-3-ebiggers@kernel.orgSigned-off-by: Eric Biggers List of files: /linux/lib/crc/Kconfig

85c9f3a2b805eb96d899da7bcc38a16459aa3c16 - lib/crc: tests: Make crc_kunit test only the enabled CRC variants

Fri, 06 Mar 2026 04:35:55 +0100

lib/crc: tests: Make crc_kunit test only the enabled CRC variantsLike commit 4478e8eeb871 ("lib/crypto: tests: Depend on library optionsrather than selecting them") did with the crypto library tests, makecrc_kunit depend on the code it tests rather than selecting it. Thisfollows the standard convention for KUnit and fixes an issue whereenabling KUNIT_ALL_TESTS enabled non-test code.crc_kunit does differ from the crypto library tests in that itconsolidates the tests for multiple CRC variants, with 5 kconfigoptions, into one KUnit suite. Since depending on *all* of thesekconfig options would greatly restrict the ability to enable crc_kunit,instead just depend on *any* of these options. Update crc_kunitaccordingly to test only the reachable code.Alternatively we could split crc_kunit into 5 test suites. But keepingit as one is simpler for now.Fixes: e47d9b1a76ed ("lib/crc_kunit.c: add KUnit test suite for CRC library functions")Cc: stable@vger.kernel.orgLink: https://lore.kernel.org/r/20260306033557.250499-2-ebiggers@kernel.orgSigned-off-by: Eric Biggers List of files: /linux/lib/crc/Kconfig

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/Kconfig

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/Kconfig

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/Kconfig

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/Kconfig

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/Kconfig

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/Kconfig

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/Kconfig

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/Kconfig

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/Kconfig

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/Kconfig

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/Kconfig

61d01fb7afc212358b0213c489192fd04b2566e1 - lib/crc: Remove ARCH_HAS_* kconfig symbols

Sat, 07 Jun 2025 22:04:54 +0200

lib/crc: Remove ARCH_HAS_* kconfig symbolsThese symbols are no longer used, so remove them.Reviewed-by: "Martin K. Petersen" Acked-by: Ingo Molnar Acked-by: "Jason A. Donenfeld" Link: https://lore.kernel.org/r/20250607200454.73587-13-ebiggers@kernel.orgSigned-off-by: Eric Biggers List of files: /linux/lib/crc/Kconfig