powerpc: move the XOR code to lib/raid/

Move the optimized XOR into lib/raid and include it it in xor.ko instead
of always building it into the main kernel image.

Link: https://lkml.kernel.org/r/20260327061704.3707577-16-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Tested-by: Eric Biggers <ebiggers@kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Mason <clm@fb.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: David Sterba <dsterba@suse.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jason A. Donenfeld <jason@zx2c4.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Li Nan <linan122@huawei.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Song Liu <song@kernel.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Ted Ts'o <tytso@mit.edu>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

2 files changed, 2 insertions, 37 deletions

diff --git a/arch/powerpc/include/asm/xor.h b/arch/powerpc/include/asm/xor.h
index 30224c5279c4..3293ac87181c 100644
--- a/arch/powerpc/include/asm/xor.h
+++ b/arch/powerpc/include/asm/xor.h
@@ -8,24 +8,11 @@
 #ifndef _ASM_POWERPC_XOR_H
 #define _ASM_POWERPC_XOR_H
 
-#ifdef CONFIG_ALTIVEC
-
-#include <asm/cputable.h>
 #include <asm/cpu_has_feature.h>
-#include <asm/xor_altivec.h>
-
-static struct xor_block_template xor_block_altivec = {
-	.name = "altivec",
-	.do_2 = xor_altivec_2,
-	.do_3 = xor_altivec_3,
-	.do_4 = xor_altivec_4,
-	.do_5 = xor_altivec_5,
-};
-#endif /* CONFIG_ALTIVEC */
-
-/* Also try the generic routines. */
 #include <asm-generic/xor.h>
 
+extern struct xor_block_template xor_block_altivec;
+
 #define arch_xor_init arch_xor_init
 static __always_inline void __init arch_xor_init(void)
 {
diff --git a/arch/powerpc/include/asm/xor_altivec.h b/arch/powerpc/include/asm/xor_altivec.h
deleted file mode 100644
index 294620a25f80..000000000000
--- a/arch/powerpc/include/asm/xor_altivec.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_POWERPC_XOR_ALTIVEC_H
-#define _ASM_POWERPC_XOR_ALTIVEC_H
-
-#ifdef CONFIG_ALTIVEC
-void xor_altivec_2(unsigned long bytes, unsigned long * __restrict p1,
-		   const unsigned long * __restrict p2);
-void xor_altivec_3(unsigned long bytes, unsigned long * __restrict p1,
-		   const unsigned long * __restrict p2,
-		   const unsigned long * __restrict p3);
-void xor_altivec_4(unsigned long bytes, unsigned long * __restrict p1,
-		   const unsigned long * __restrict p2,
-		   const unsigned long * __restrict p3,
-		   const unsigned long * __restrict p4);
-void xor_altivec_5(unsigned long bytes, unsigned long * __restrict p1,
-		   const unsigned long * __restrict p2,
-		   const unsigned long * __restrict p3,
-		   const unsigned long * __restrict p4,
-		   const unsigned long * __restrict p5);
-
-#endif
-#endif /* _ASM_POWERPC_XOR_ALTIVEC_H */