Re: [PATCH 18/25] x86: move the XOR code to lib/raid/

cleanup the RAID5 XOR library · Christoph Hellwig <hch@lst.de> · 2026-02-26
[PATCH 02/25] arm/xor: remove in_interrupt() handling · Christoph Hellwig <hch@lst.de> · 2026-02-26
[PATCH 04/25] xor: move to lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-02-26
Re: [PATCH 04/25] xor: move to lib/raid/ · Eric Biggers <ebiggers@kernel.org> · 2026-02-28
Re: [PATCH 04/25] xor: move to lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-03-03
[PATCH 01/25] xor: assert that xor_blocks is not called from interrupt context · Christoph Hellwig <hch@lst.de> · 2026-02-26
Re: [PATCH 01/25] xor: assert that xor_blocks is not called from interrupt context · Peter Zijlstra <peterz@infradead.org> · 2026-02-27
Re: [PATCH 01/25] xor: assert that xor_blocks is not called from interrupt context · Christoph Hellwig <hch@lst.de> · 2026-03-03
Re: [PATCH 01/25] xor: assert that xor_blocks is not called from interrupt context · Eric Biggers <ebiggers@kernel.org> · 2026-03-03
Re: [PATCH 01/25] xor: assert that xor_blocks is not called from interrupt context · Christoph Hellwig <hch@lst.de> · 2026-03-04
Re: [PATCH 01/25] xor: assert that xor_blocks is not called from interrupt context · Peter Zijlstra <peterz@infradead.org> · 2026-03-04
Re: [PATCH 01/25] xor: assert that xor_blocks is not called from interrupt context · Christoph Hellwig <hch@lst.de> · 2026-03-04
Re: [PATCH 01/25] xor: assert that xor_blocks is not called from interrupt context · Heiko Carstens <hca@linux.ibm.com> · 2026-03-04
Re: [PATCH 01/25] xor: assert that xor_blocks is not called from interrupt context · Christoph Hellwig <hch@lst.de> · 2026-03-04
Re: [PATCH 01/25] xor: assert that xor_blocks is not called from interrupt context · Heiko Carstens <hca@linux.ibm.com> · 2026-03-04
[PATCH 08/25] xor: remove macro abuse for XOR implementation registrations · Christoph Hellwig <hch@lst.de> · 2026-02-26
[PATCH 13/25] loongarch: move the XOR code to lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-02-26
[PATCH 11/25] arm: move the XOR code to lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-02-26
[PATCH 03/25] um/xor: don't override XOR_SELECT_TEMPLATE · Christoph Hellwig <hch@lst.de> · 2026-02-26
Re: [PATCH 03/25] um/xor: don't override XOR_SELECT_TEMPLATE · Richard Weinberger <richard@nod.at> · 2026-02-26
Re: [PATCH 03/25] um/xor: don't override XOR_SELECT_TEMPLATE · hch <hch@lst.de> · 2026-02-26
Re: [PATCH 03/25] um/xor: don't override XOR_SELECT_TEMPLATE · Johannes Berg <johannes@sipsolutions.net> · 2026-02-27
Re: [PATCH 03/25] um/xor: don't override XOR_SELECT_TEMPLATE · Eric Biggers <ebiggers@kernel.org> · 2026-02-28
Re: [PATCH 03/25] um/xor: don't override XOR_SELECT_TEMPLATE · Johannes Berg <johannes@sipsolutions.net> · 2026-03-02
[PATCH 07/25] xor: split xor.h · Christoph Hellwig <hch@lst.de> · 2026-02-26
Re: [PATCH 07/25] xor: split xor.h · Eric Biggers <ebiggers@kernel.org> · 2026-02-28
Re: [PATCH 07/25] xor: split xor.h · Christoph Hellwig <hch@lst.de> · 2026-03-03
Re: [PATCH 07/25] xor: split xor.h · Christoph Hellwig <hch@lst.de> · 2026-03-03
[PATCH 05/25] xor: small cleanups · Christoph Hellwig <hch@lst.de> · 2026-02-26
[PATCH 12/25] arm64: move the XOR code to lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-02-26
[PATCH 06/25] xor: cleanup registration and probing · Christoph Hellwig <hch@lst.de> · 2026-02-26
Re: [PATCH 06/25] xor: cleanup registration and probing · Eric Biggers <ebiggers@kernel.org> · 2026-02-28
[PATCH 15/25] riscv: move the XOR code to lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-02-26
Re: [PATCH 15/25] riscv: move the XOR code to lib/raid/ · Eric Biggers <ebiggers@kernel.org> · 2026-02-28
[PATCH 09/25] xor: move generic implementations out of asm-generic/xor.h · Christoph Hellwig <hch@lst.de> · 2026-02-26
Re: [PATCH 09/25] xor: move generic implementations out of asm-generic/xor.h · "Arnd Bergmann" <arnd@arndb.de> · 2026-02-26
Re: [PATCH 09/25] xor: move generic implementations out of asm-generic/xor.h · Eric Biggers <ebiggers@kernel.org> · 2026-02-28
Re: [PATCH 09/25] xor: move generic implementations out of asm-generic/xor.h · Christoph Hellwig <hch@lst.de> · 2026-03-03
Re: [PATCH 09/25] xor: move generic implementations out of asm-generic/xor.h · Christoph Hellwig <hch@lst.de> · 2026-03-10
[PATCH 10/25] alpha: move the XOR code to lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-02-26
[PATCH 14/25] powerpc: move the XOR code to lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-02-26
[PATCH 16/25] sparc: move the XOR code to lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-02-26
Re: [PATCH 16/25] sparc: move the XOR code to lib/raid/ · Eric Biggers <ebiggers@kernel.org> · 2026-02-28
Re: [PATCH 16/25] sparc: move the XOR code to lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-03-03
[PATCH 17/25] s390: move the XOR code to lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-02-26
Re: [PATCH 17/25] s390: move the XOR code to lib/raid/ · Heiko Carstens <hca@linux.ibm.com> · 2026-02-27
Re: [PATCH 17/25] s390: move the XOR code to lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-02-27
[PATCH 19/25] xor: avoid indirect calls for arm64-optimized ops · Christoph Hellwig <hch@lst.de> · 2026-02-26
[PATCH 18/25] x86: move the XOR code to lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-02-26
Re: [PATCH 18/25] x86: move the XOR code to lib/raid/ · Peter Zijlstra <peterz@infradead.org> · 2026-02-27
Re: [PATCH 18/25] x86: move the XOR code to lib/raid/ · Eric Biggers <ebiggers@kernel.org> · 2026-02-27
Re: [PATCH 18/25] x86: move the XOR code to lib/raid/ · Peter Zijlstra <peterz@infradead.org> · 2026-02-28
Re: [PATCH 18/25] x86: move the XOR code to lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-03-03
[PATCH 22/25] async_xor: use xor_gen · Christoph Hellwig <hch@lst.de> · 2026-02-26
Re: [PATCH 22/25] async_xor: use xor_gen · Eric Biggers <ebiggers@kernel.org> · 2026-02-28
[PATCH 20/25] xor: make xor.ko self-contained in lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-02-26
Re: [PATCH 20/25] xor: make xor.ko self-contained in lib/raid/ · Eric Biggers <ebiggers@kernel.org> · 2026-02-28
Re: [PATCH 20/25] xor: make xor.ko self-contained in lib/raid/ · Christoph Hellwig <hch@lst.de> · 2026-03-03
[PATCH 21/25] xor: add a better public API · Christoph Hellwig <hch@lst.de> · 2026-02-26
Re: [PATCH 21/25] xor: add a better public API · Eric Biggers <ebiggers@kernel.org> · 2026-02-28
Re: [PATCH 21/25] xor: add a better public API · Christoph Hellwig <hch@lst.de> · 2026-03-03
Re: [PATCH 21/25] xor: add a better public API · Christoph Hellwig <hch@lst.de> · 2026-03-10
[PATCH 23/25] btrfs: use xor_gen · Christoph Hellwig <hch@lst.de> · 2026-02-26
[PATCH 25/25] xor: use static_call for xor_gen · Christoph Hellwig <hch@lst.de> · 2026-02-26
Re: [PATCH 25/25] xor: use static_call for xor_gen · Peter Zijlstra <peterz@infradead.org> · 2026-02-27
[PATCH 24/25] xor: pass the entire operation to the low-level ops · Christoph Hellwig <hch@lst.de> · 2026-02-26
Re: [PATCH 24/25] xor: pass the entire operation to the low-level ops · Eric Biggers <ebiggers@kernel.org> · 2026-02-28
Re: [PATCH 24/25] xor: pass the entire operation to the low-level ops · Christoph Hellwig <hch@lst.de> · 2026-03-03
Re: cleanup the RAID5 XOR library · Andrew Morton <akpm@linux-foundation.org> · 2026-02-26
Re: cleanup the RAID5 XOR library · Eric Biggers <ebiggers@kernel.org> · 2026-02-28
Re: cleanup the RAID5 XOR library · Christoph Hellwig <hch@lst.de> · 2026-03-03

From: Peter Zijlstra <peterz@infradead.org>
Date: 2026-02-27 14:30:45
Also in: linux-alpha, linux-arch, linux-btrfs, linux-crypto, linux-raid, linux-riscv, linux-s390, linux-um, lkml, loongarch, sparclinux

On Thu, Feb 26, 2026 at 07:10:30AM -0800, Christoph Hellwig wrote:

Move the optimized XOR code out of line into lib/raid.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/x86/include/asm/xor.h                    | 518 ++----------------
 arch/x86/include/asm/xor_64.h                 |  32 --
 lib/raid/xor/Makefile                         |   8 +
 .../xor_avx.h => lib/raid/xor/x86/xor-avx.c   |  14 +-
 .../xor_32.h => lib/raid/xor/x86/xor-mmx.c    |  60 +-
 lib/raid/xor/x86/xor-sse.c                    | 476 ++++++++++++++++

I gotta ask, why lib/raid/xor/$arch/ instead of something like
arch/$arch/lib/xor ?

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