2 commits

Author	SHA1	Message	Date
Herbert Xu	a9ed4422ad	lib/raid6: update recov_rvv.c zero page usage ... Update lib/raid6/recov_rvv.c, for 1857fcc847 ("lib/raid6: replace custom zero page with ZERO_PAGE"), per Klara. Link: https://lkml.kernel.org/r/aFkUnXWtxcgOTVkw@gondor.apana.org.au Fixes: 1857fcc847 ("lib/raid6: replace custom zero page with ZERO_PAGE") Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Cc: Song Liu <song@kernel.org> Cc: Yu Kuai <yukuai3@huawei.com> Cc: Klara Modin <klarasmodin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2025-07-19 19:08:29 -07:00
Chunyan Zhang	6093faaf95	raid6: Add RISC-V SIMD syndrome and recovery calculations ... The assembly is originally based on the ARM NEON and int.uc, but uses RISC-V vector instructions to implement the RAID6 syndrome and recovery calculations. The functions are tested on QEMU running with the option "-icount shift=0": raid6: rvvx1 gen() 1008 MB/s raid6: rvvx2 gen() 1395 MB/s raid6: rvvx4 gen() 1584 MB/s raid6: rvvx8 gen() 1694 MB/s raid6: int64x8 gen() 113 MB/s raid6: int64x4 gen() 116 MB/s raid6: int64x2 gen() 272 MB/s raid6: int64x1 gen() 229 MB/s raid6: using algorithm rvvx8 gen() 1694 MB/s raid6: .... xor() 1000 MB/s, rmw enabled raid6: using rvv recovery algorithm [Charlie: - Fixup vector options] Signed-off-by: Charlie Jenkins <charlie@rivosinc.com> Signed-off-by: Chunyan Zhang <zhangchunyan@iscas.ac.cn> Reviewed-by: Charlie Jenkins <charlie@rivosinc.com> Tested-by: Charlie Jenkins <charlie@rivosinc.com> Link: https://lore.kernel.org/r/20250305083707.74218-1-zhangchunyan@iscas.ac.cn Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>	2025-06-05 14:03:07 -07:00