Changes in raid6_kunit.c

8cf0a6c4bb9e09a2d280376dba723b218c139e58 - raid6_kunit: randomize buffer alignment

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

raid6_kunit: randomize buffer alignmentAdd code to add random alignment to the buffers to test the case wherethey are not page aligned, and to move the buffers to the end of theallocation so that they are next to the vmalloc guard page.This does not include the recovery buffers as the recovery requires pagealignment.Link: https://lore.kernel.org/20260518051804.462141-19-hch@lst.deSigned-off-by: Christoph Hellwig Acked-by: Ard Biesheuvel Tested-by: Ard Biesheuvel # kunit only on arm64Cc: Albert Ou Cc: Alexander Gordeev Cc: Alexandre Ghiti Cc: Arnd Bergmann Cc: "Borislav Petkov (AMD)" Cc: Catalin Marinas Cc: Chris Mason Cc: Christian Borntraeger Cc: Dan Williams Cc: David Sterba Cc: Heiko Carstens Cc: Herbert Xu Cc: "H. Peter Anvin" Cc: Huacai Chen Cc: Ingo Molnar Cc: Li Nan Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Palmer Dabbelt Cc: Song Liu Cc: Sven Schnelle Cc: Vasily Gorbik Cc: WANG Xuerui Cc: Will Deacon Signed-off-by: Andrew Morton List of files: /linux/lib/raid/raid6/tests/raid6_kunit.c

fa0c812c0aa58d4375317d804dd54e44b8bcf5e3 - raid6_kunit: randomize parameters and increase limits

Mon, 18 May 2026 07:18:00 +0200

raid6_kunit: randomize parameters and increase limitsThe current test has double-quadratic behavior in the selection for theupdated ("XORed") disks, and in the selection of updated pointers, whichmakes scaling it to more tests difficult. At the same time it only evertests with the maximum number of disks, which leaves a coverage hole forsmaller ones.Fix this by randomizing the total number, failed disks and regions toupdate, and increasing the upper number of tests disks.Link: https://lore.kernel.org/20260518051804.462141-18-hch@lst.deSigned-off-by: Christoph Hellwig Acked-by: Ard Biesheuvel Tested-by: Ard Biesheuvel # kunit only on arm64Cc: Albert Ou Cc: Alexander Gordeev Cc: Alexandre Ghiti Cc: Arnd Bergmann Cc: "Borislav Petkov (AMD)" Cc: Catalin Marinas Cc: Chris Mason Cc: Christian Borntraeger Cc: Dan Williams Cc: David Sterba Cc: Heiko Carstens Cc: Herbert Xu Cc: "H. Peter Anvin" Cc: Huacai Chen Cc: Ingo Molnar Cc: Li Nan Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Palmer Dabbelt Cc: Song Liu Cc: Sven Schnelle Cc: Vasily Gorbik Cc: WANG Xuerui Cc: Will Deacon Signed-off-by: Andrew Morton List of files: /linux/lib/raid/raid6/tests/raid6_kunit.c

562bcbfcb99b2eb4fd17d6551d760450e128afe1 - raid6_kunit: cleanup dataptr handling

Mon, 18 May 2026 07:17:59 +0200

raid6_kunit: cleanup dataptr handlingMove the global dataptr array into test_recover() as all sites that filldata or parity can use test_buffers directly, and this localized theoverride for the failed slots to the recovery testing routine.Link: https://lore.kernel.org/20260518051804.462141-17-hch@lst.deSigned-off-by: Christoph Hellwig Acked-by: Ard Biesheuvel Tested-by: Ard Biesheuvel # kunit only on arm64Cc: Albert Ou Cc: Alexander Gordeev Cc: Alexandre Ghiti Cc: Arnd Bergmann Cc: "Borislav Petkov (AMD)" Cc: Catalin Marinas Cc: Chris Mason Cc: Christian Borntraeger Cc: Dan Williams Cc: David Sterba Cc: Heiko Carstens Cc: Herbert Xu Cc: "H. Peter Anvin" Cc: Huacai Chen Cc: Ingo Molnar Cc: Li Nan Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Palmer Dabbelt Cc: Song Liu Cc: Sven Schnelle Cc: Vasily Gorbik Cc: WANG Xuerui Cc: Will Deacon Signed-off-by: Andrew Morton List of files: /linux/lib/raid/raid6/tests/raid6_kunit.c

d67c25712fe3c5d78fea03827771c49debb89c80 - raid6_kunit: dynamically allocate data buffers using vmalloc

Mon, 18 May 2026 07:17:58 +0200

raid6_kunit: dynamically allocate data buffers using vmallocUse vmalloc for the data buffers instead of using static .dataallocations. This provides for better out of bounds checking and avoidswasting kernel memory after the test has run. vmalloc is used instead ofkmalloc to provide for better out of bounds access checking as in otherkunit tests.Link: https://lore.kernel.org/20260518051804.462141-16-hch@lst.deSigned-off-by: Christoph Hellwig Acked-by: Ard Biesheuvel Tested-by: Ard Biesheuvel # kunit only on arm64Cc: Albert Ou Cc: Alexander Gordeev Cc: Alexandre Ghiti Cc: Arnd Bergmann Cc: "Borislav Petkov (AMD)" Cc: Catalin Marinas Cc: Chris Mason Cc: Christian Borntraeger Cc: Dan Williams Cc: David Sterba Cc: Heiko Carstens Cc: Herbert Xu Cc: "H. Peter Anvin" Cc: Huacai Chen Cc: Ingo Molnar Cc: Li Nan Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Palmer Dabbelt Cc: Song Liu Cc: Sven Schnelle Cc: Vasily Gorbik Cc: WANG Xuerui Cc: Will Deacon Signed-off-by: Andrew Morton List of files: /linux/lib/raid/raid6/tests/raid6_kunit.c

2175395f76c3eb3b19f1ce9be54d9dc9b0e4e61e - raid6_kunit: use KUNIT_CASE_PARAM

Mon, 18 May 2026 07:17:57 +0200

raid6_kunit: use KUNIT_CASE_PARAMThe raid6 test combines various generation and recovery algorithms. UseKUNIT_CASE_PARAM and provide a generator that iterates over the possiblecombinations instead of looping inside a single test instance.Link: https://lore.kernel.org/20260518051804.462141-15-hch@lst.deSigned-off-by: Christoph Hellwig Acked-by: Ard Biesheuvel Tested-by: Ard Biesheuvel # kunit only on arm64Cc: Albert Ou Cc: Alexander Gordeev Cc: Alexandre Ghiti Cc: Arnd Bergmann Cc: "Borislav Petkov (AMD)" Cc: Catalin Marinas Cc: Chris Mason Cc: Christian Borntraeger Cc: Dan Williams Cc: David Sterba Cc: Heiko Carstens Cc: Herbert Xu Cc: "H. Peter Anvin" Cc: Huacai Chen Cc: Ingo Molnar Cc: Li Nan Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Palmer Dabbelt Cc: Song Liu Cc: Sven Schnelle Cc: Vasily Gorbik Cc: WANG Xuerui Cc: Will Deacon Signed-off-by: Andrew Morton List of files: /linux/lib/raid/raid6/tests/raid6_kunit.c

adfcf6e89bc1322c4a6cc37ad32e411cf0500622 - raid6: rework registration of optimized algorithms

Mon, 18 May 2026 07:17:53 +0200

raid6: rework registration of optimized algorithmsReplace the static array of algorithms with a call to an architecturehelper to register algorithms. This serves two purposes: it avoid havingto register all algorithms in a single central place, and it removes theneed for the priority field by just registering the algorithms that thearchitecture considers suitable for the currently running CPUs.[hch@lst.de: register avx512 after avx2] Link: https://lore.kernel.org/20260527074539.2292913-3-hch@lst.deLink: https://lore.kernel.org/20260518051804.462141-11-hch@lst.deSigned-off-by: Christoph Hellwig Acked-by: Ard Biesheuvel Tested-by: Ard Biesheuvel # kunit only on arm64Cc: Albert Ou Cc: Alexander Gordeev Cc: Alexandre Ghiti Cc: Arnd Bergmann Cc: "Borislav Petkov (AMD)" Cc: Catalin Marinas Cc: Chris Mason Cc: Christian Borntraeger Cc: Dan Williams Cc: David Sterba Cc: Heiko Carstens Cc: Herbert Xu Cc: "H. Peter Anvin" Cc: Huacai Chen Cc: Ingo Molnar Cc: Li Nan Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Palmer Dabbelt Cc: Song Liu Cc: Sven Schnelle Cc: Vasily Gorbik Cc: WANG Xuerui Cc: Will Deacon Signed-off-by: Andrew Morton List of files: /linux/lib/raid/raid6/tests/raid6_kunit.c

769d603fc44f896e7f61de7f0cdb8b78d46bc8c8 - raid6: hide internals

Mon, 18 May 2026 07:17:52 +0200

raid6: hide internalsSplit out two new headers from the public pq.h: - lib/raid/raid6/algos.h contains the algorithm lists private to lib/raid/raid6 - include/linux/raid/pq_tables.h contains the tables also used by async_tx providers.The public include/linux/pq.h is now limited to the public interface forthe consumers of the RAID6 PQ API.[hch@lst.de: remove duplicate ccflags-y line] Link: https://lore.kernel.org/20260527074539.2292913-2-hch@lst.deLink: https://lore.kernel.org/20260518051804.462141-10-hch@lst.deSigned-off-by: Christoph Hellwig Acked-by: Ard Biesheuvel Tested-by: Ard Biesheuvel # kunit only on arm64Cc: Albert Ou Cc: Alexander Gordeev Cc: Alexandre Ghiti Cc: Arnd Bergmann Cc: "Borislav Petkov (AMD)" Cc: Catalin Marinas Cc: Chris Mason Cc: Christian Borntraeger Cc: Dan Williams Cc: David Sterba Cc: Heiko Carstens Cc: Herbert Xu Cc: "H. Peter Anvin" Cc: Huacai Chen Cc: Ingo Molnar Cc: Li Nan Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Palmer Dabbelt Cc: Song Liu Cc: Sven Schnelle Cc: Vasily Gorbik Cc: WANG Xuerui Cc: Will Deacon Signed-off-by: Andrew Morton List of files: /linux/lib/raid/raid6/tests/raid6_kunit.c

3626738bc7147d52cb49f3994a9846aa2d34810a - raid6: move to lib/raid/

Mon, 18 May 2026 07:17:46 +0200

raid6: move to lib/raid/Move the raid6 code to live in lib/raid/ with the XOR code, and change theinternal organization so that each architecture has a subdirectory similarto the CRC, crypto and XOR libraries, and fix up the Makefile to onlybuild files actually needed.Also move the kunit test case from the history test/ subdirectory totests/ and use the normal naming scheme for it.Link: https://lore.kernel.org/20260518051804.462141-4-hch@lst.deSigned-off-by: Christoph Hellwig Acked-by: Ard Biesheuvel Tested-by: Ard Biesheuvel # kunit only on arm64Cc: Albert Ou Cc: Alexander Gordeev Cc: Alexandre Ghiti Cc: Arnd Bergmann Cc: "Borislav Petkov (AMD)" Cc: Catalin Marinas Cc: Chris Mason Cc: Christian Borntraeger Cc: Dan Williams Cc: David Sterba Cc: Heiko Carstens Cc: Herbert Xu Cc: "H. Peter Anvin" Cc: Huacai Chen Cc: Ingo Molnar Cc: Li Nan Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Palmer Dabbelt Cc: Song Liu Cc: Sven Schnelle Cc: Vasily Gorbik Cc: WANG Xuerui Cc: Will Deacon Signed-off-by: Andrew Morton List of files: /linux/lib/raid/raid6/tests/raid6_kunit.c