* [merged mm-nonmm-stable] powerpc-move-the-xor-code-to-lib-raid.patch removed from -mm tree
@ 2026-04-03 6:41 Andrew Morton
0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2026-04-03 6:41 UTC (permalink / raw)
To: mm-commits, will, tytso, svens, song, richard, richard.henderson,
palmer, npiggin, mpe, mingo, mattst88, maddy, linux, linmag7,
linan122, kernel, johannes, jason, hpa, herbert, hca, gor,
ebiggers, dsterba, davem, dan.j.williams, clm, chenhuacai,
catalin.marinas, bp, borntraeger, arnd, ardb, aou, anton.ivanov,
andreas, alex, agordeev, hch, akpm
The quilt patch titled
Subject: powerpc: move the XOR code to lib/raid/
has been removed from the -mm tree. Its filename was
powerpc-move-the-xor-code-to-lib-raid.patch
This patch was dropped because it was merged into the mm-nonmm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Christoph Hellwig <hch@lst.de>
Subject: powerpc: move the XOR code to lib/raid/
Date: Fri, 27 Mar 2026 07:16:47 +0100
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>
---
arch/powerpc/include/asm/xor.h | 17 --
arch/powerpc/include/asm/xor_altivec.h | 22 ---
arch/powerpc/lib/Makefile | 5
arch/powerpc/lib/xor_vmx.c | 156 -----------------------
arch/powerpc/lib/xor_vmx.h | 22 ---
arch/powerpc/lib/xor_vmx_glue.c | 63 ---------
lib/raid/xor/Makefile | 5
lib/raid/xor/powerpc/xor_vmx.c | 156 +++++++++++++++++++++++
lib/raid/xor/powerpc/xor_vmx.h | 22 +++
lib/raid/xor/powerpc/xor_vmx_glue.c | 67 +++++++++
10 files changed, 252 insertions(+), 283 deletions(-)
diff --git a/arch/powerpc/include/asm/xor_altivec.h a/arch/powerpc/include/asm/xor_altivec.h
deleted file mode 100644
--- 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 */
--- a/arch/powerpc/include/asm/xor.h~powerpc-move-the-xor-code-to-lib-raid
+++ a/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)
{
--- a/arch/powerpc/lib/Makefile~powerpc-move-the-xor-code-to-lib-raid
+++ a/arch/powerpc/lib/Makefile
@@ -73,9 +73,4 @@ obj-$(CONFIG_PPC_LIB_RHEAP) += rheap.o
obj-$(CONFIG_FTR_FIXUP_SELFTEST) += feature-fixups-test.o
-obj-$(CONFIG_ALTIVEC) += xor_vmx.o xor_vmx_glue.o
-CFLAGS_xor_vmx.o += -mhard-float -maltivec $(call cc-option,-mabi=altivec)
-# Enable <altivec.h>
-CFLAGS_xor_vmx.o += -isystem $(shell $(CC) -print-file-name=include)
-
obj-$(CONFIG_PPC64) += $(obj64-y)
diff --git a/arch/powerpc/lib/xor_vmx.c a/arch/powerpc/lib/xor_vmx.c
deleted file mode 100644
--- a/arch/powerpc/lib/xor_vmx.c
+++ /dev/null
@@ -1,156 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- *
- * Copyright (C) IBM Corporation, 2012
- *
- * Author: Anton Blanchard <anton@au.ibm.com>
- */
-
-/*
- * Sparse (as at v0.5.0) gets very, very confused by this file.
- * Make it a bit simpler for it.
- */
-#if !defined(__CHECKER__)
-#include <altivec.h>
-#else
-#define vec_xor(a, b) a ^ b
-#define vector __attribute__((vector_size(16)))
-#endif
-
-#include "xor_vmx.h"
-
-typedef vector signed char unative_t;
-
-#define DEFINE(V) \
- unative_t *V = (unative_t *)V##_in; \
- unative_t V##_0, V##_1, V##_2, V##_3
-
-#define LOAD(V) \
- do { \
- V##_0 = V[0]; \
- V##_1 = V[1]; \
- V##_2 = V[2]; \
- V##_3 = V[3]; \
- } while (0)
-
-#define STORE(V) \
- do { \
- V[0] = V##_0; \
- V[1] = V##_1; \
- V[2] = V##_2; \
- V[3] = V##_3; \
- } while (0)
-
-#define XOR(V1, V2) \
- do { \
- V1##_0 = vec_xor(V1##_0, V2##_0); \
- V1##_1 = vec_xor(V1##_1, V2##_1); \
- V1##_2 = vec_xor(V1##_2, V2##_2); \
- V1##_3 = vec_xor(V1##_3, V2##_3); \
- } while (0)
-
-void __xor_altivec_2(unsigned long bytes,
- unsigned long * __restrict v1_in,
- const unsigned long * __restrict v2_in)
-{
- DEFINE(v1);
- DEFINE(v2);
- unsigned long lines = bytes / (sizeof(unative_t)) / 4;
-
- do {
- LOAD(v1);
- LOAD(v2);
- XOR(v1, v2);
- STORE(v1);
-
- v1 += 4;
- v2 += 4;
- } while (--lines > 0);
-}
-
-void __xor_altivec_3(unsigned long bytes,
- unsigned long * __restrict v1_in,
- const unsigned long * __restrict v2_in,
- const unsigned long * __restrict v3_in)
-{
- DEFINE(v1);
- DEFINE(v2);
- DEFINE(v3);
- unsigned long lines = bytes / (sizeof(unative_t)) / 4;
-
- do {
- LOAD(v1);
- LOAD(v2);
- LOAD(v3);
- XOR(v1, v2);
- XOR(v1, v3);
- STORE(v1);
-
- v1 += 4;
- v2 += 4;
- v3 += 4;
- } while (--lines > 0);
-}
-
-void __xor_altivec_4(unsigned long bytes,
- unsigned long * __restrict v1_in,
- const unsigned long * __restrict v2_in,
- const unsigned long * __restrict v3_in,
- const unsigned long * __restrict v4_in)
-{
- DEFINE(v1);
- DEFINE(v2);
- DEFINE(v3);
- DEFINE(v4);
- unsigned long lines = bytes / (sizeof(unative_t)) / 4;
-
- do {
- LOAD(v1);
- LOAD(v2);
- LOAD(v3);
- LOAD(v4);
- XOR(v1, v2);
- XOR(v3, v4);
- XOR(v1, v3);
- STORE(v1);
-
- v1 += 4;
- v2 += 4;
- v3 += 4;
- v4 += 4;
- } while (--lines > 0);
-}
-
-void __xor_altivec_5(unsigned long bytes,
- unsigned long * __restrict v1_in,
- const unsigned long * __restrict v2_in,
- const unsigned long * __restrict v3_in,
- const unsigned long * __restrict v4_in,
- const unsigned long * __restrict v5_in)
-{
- DEFINE(v1);
- DEFINE(v2);
- DEFINE(v3);
- DEFINE(v4);
- DEFINE(v5);
- unsigned long lines = bytes / (sizeof(unative_t)) / 4;
-
- do {
- LOAD(v1);
- LOAD(v2);
- LOAD(v3);
- LOAD(v4);
- LOAD(v5);
- XOR(v1, v2);
- XOR(v3, v4);
- XOR(v1, v5);
- XOR(v1, v3);
- STORE(v1);
-
- v1 += 4;
- v2 += 4;
- v3 += 4;
- v4 += 4;
- v5 += 4;
- } while (--lines > 0);
-}
diff --git a/arch/powerpc/lib/xor_vmx_glue.c a/arch/powerpc/lib/xor_vmx_glue.c
deleted file mode 100644
--- a/arch/powerpc/lib/xor_vmx_glue.c
+++ /dev/null
@@ -1,63 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Altivec XOR operations
- *
- * Copyright 2017 IBM Corp.
- */
-
-#include <linux/preempt.h>
-#include <linux/export.h>
-#include <linux/sched.h>
-#include <asm/switch_to.h>
-#include <asm/xor_altivec.h>
-#include "xor_vmx.h"
-
-void xor_altivec_2(unsigned long bytes, unsigned long * __restrict p1,
- const unsigned long * __restrict p2)
-{
- preempt_disable();
- enable_kernel_altivec();
- __xor_altivec_2(bytes, p1, p2);
- disable_kernel_altivec();
- preempt_enable();
-}
-EXPORT_SYMBOL(xor_altivec_2);
-
-void xor_altivec_3(unsigned long bytes, unsigned long * __restrict p1,
- const unsigned long * __restrict p2,
- const unsigned long * __restrict p3)
-{
- preempt_disable();
- enable_kernel_altivec();
- __xor_altivec_3(bytes, p1, p2, p3);
- disable_kernel_altivec();
- preempt_enable();
-}
-EXPORT_SYMBOL(xor_altivec_3);
-
-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)
-{
- preempt_disable();
- enable_kernel_altivec();
- __xor_altivec_4(bytes, p1, p2, p3, p4);
- disable_kernel_altivec();
- preempt_enable();
-}
-EXPORT_SYMBOL(xor_altivec_4);
-
-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)
-{
- preempt_disable();
- enable_kernel_altivec();
- __xor_altivec_5(bytes, p1, p2, p3, p4, p5);
- disable_kernel_altivec();
- preempt_enable();
-}
-EXPORT_SYMBOL(xor_altivec_5);
diff --git a/arch/powerpc/lib/xor_vmx.h a/arch/powerpc/lib/xor_vmx.h
deleted file mode 100644
--- a/arch/powerpc/lib/xor_vmx.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Simple interface to link xor_vmx.c and xor_vmx_glue.c
- *
- * Separating these file ensures that no altivec instructions are run
- * outside of the enable/disable altivec block.
- */
-
-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);
--- a/lib/raid/xor/Makefile~powerpc-move-the-xor-code-to-lib-raid
+++ a/lib/raid/xor/Makefile
@@ -16,6 +16,7 @@ endif
xor-$(CONFIG_ARM64) += arm64/xor-neon.o arm64/xor-neon-glue.o
xor-$(CONFIG_CPU_HAS_LSX) += loongarch/xor_simd.o
xor-$(CONFIG_CPU_HAS_LSX) += loongarch/xor_simd_glue.o
+xor-$(CONFIG_ALTIVEC) += powerpc/xor_vmx.o powerpc/xor_vmx_glue.o
CFLAGS_arm/xor-neon.o += $(CC_FLAGS_FPU)
@@ -23,3 +24,7 @@ CFLAGS_REMOVE_arm/xor-neon.o += $(CC_FLA
CFLAGS_arm64/xor-neon.o += $(CC_FLAGS_FPU)
CFLAGS_REMOVE_arm64/xor-neon.o += $(CC_FLAGS_NO_FPU)
+
+CFLAGS_powerpc/xor_vmx.o += -mhard-float -maltivec \
+ $(call cc-option,-mabi=altivec) \
+ -isystem $(shell $(CC) -print-file-name=include)
diff --git a/lib/raid/xor/powerpc/xor_vmx.c a/lib/raid/xor/powerpc/xor_vmx.c
new file mode 100664
--- /dev/null
+++ a/lib/raid/xor/powerpc/xor_vmx.c
@@ -0,0 +1,156 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *
+ * Copyright (C) IBM Corporation, 2012
+ *
+ * Author: Anton Blanchard <anton@au.ibm.com>
+ */
+
+/*
+ * Sparse (as at v0.5.0) gets very, very confused by this file.
+ * Make it a bit simpler for it.
+ */
+#if !defined(__CHECKER__)
+#include <altivec.h>
+#else
+#define vec_xor(a, b) a ^ b
+#define vector __attribute__((vector_size(16)))
+#endif
+
+#include "xor_vmx.h"
+
+typedef vector signed char unative_t;
+
+#define DEFINE(V) \
+ unative_t *V = (unative_t *)V##_in; \
+ unative_t V##_0, V##_1, V##_2, V##_3
+
+#define LOAD(V) \
+ do { \
+ V##_0 = V[0]; \
+ V##_1 = V[1]; \
+ V##_2 = V[2]; \
+ V##_3 = V[3]; \
+ } while (0)
+
+#define STORE(V) \
+ do { \
+ V[0] = V##_0; \
+ V[1] = V##_1; \
+ V[2] = V##_2; \
+ V[3] = V##_3; \
+ } while (0)
+
+#define XOR(V1, V2) \
+ do { \
+ V1##_0 = vec_xor(V1##_0, V2##_0); \
+ V1##_1 = vec_xor(V1##_1, V2##_1); \
+ V1##_2 = vec_xor(V1##_2, V2##_2); \
+ V1##_3 = vec_xor(V1##_3, V2##_3); \
+ } while (0)
+
+void __xor_altivec_2(unsigned long bytes,
+ unsigned long * __restrict v1_in,
+ const unsigned long * __restrict v2_in)
+{
+ DEFINE(v1);
+ DEFINE(v2);
+ unsigned long lines = bytes / (sizeof(unative_t)) / 4;
+
+ do {
+ LOAD(v1);
+ LOAD(v2);
+ XOR(v1, v2);
+ STORE(v1);
+
+ v1 += 4;
+ v2 += 4;
+ } while (--lines > 0);
+}
+
+void __xor_altivec_3(unsigned long bytes,
+ unsigned long * __restrict v1_in,
+ const unsigned long * __restrict v2_in,
+ const unsigned long * __restrict v3_in)
+{
+ DEFINE(v1);
+ DEFINE(v2);
+ DEFINE(v3);
+ unsigned long lines = bytes / (sizeof(unative_t)) / 4;
+
+ do {
+ LOAD(v1);
+ LOAD(v2);
+ LOAD(v3);
+ XOR(v1, v2);
+ XOR(v1, v3);
+ STORE(v1);
+
+ v1 += 4;
+ v2 += 4;
+ v3 += 4;
+ } while (--lines > 0);
+}
+
+void __xor_altivec_4(unsigned long bytes,
+ unsigned long * __restrict v1_in,
+ const unsigned long * __restrict v2_in,
+ const unsigned long * __restrict v3_in,
+ const unsigned long * __restrict v4_in)
+{
+ DEFINE(v1);
+ DEFINE(v2);
+ DEFINE(v3);
+ DEFINE(v4);
+ unsigned long lines = bytes / (sizeof(unative_t)) / 4;
+
+ do {
+ LOAD(v1);
+ LOAD(v2);
+ LOAD(v3);
+ LOAD(v4);
+ XOR(v1, v2);
+ XOR(v3, v4);
+ XOR(v1, v3);
+ STORE(v1);
+
+ v1 += 4;
+ v2 += 4;
+ v3 += 4;
+ v4 += 4;
+ } while (--lines > 0);
+}
+
+void __xor_altivec_5(unsigned long bytes,
+ unsigned long * __restrict v1_in,
+ const unsigned long * __restrict v2_in,
+ const unsigned long * __restrict v3_in,
+ const unsigned long * __restrict v4_in,
+ const unsigned long * __restrict v5_in)
+{
+ DEFINE(v1);
+ DEFINE(v2);
+ DEFINE(v3);
+ DEFINE(v4);
+ DEFINE(v5);
+ unsigned long lines = bytes / (sizeof(unative_t)) / 4;
+
+ do {
+ LOAD(v1);
+ LOAD(v2);
+ LOAD(v3);
+ LOAD(v4);
+ LOAD(v5);
+ XOR(v1, v2);
+ XOR(v3, v4);
+ XOR(v1, v5);
+ XOR(v1, v3);
+ STORE(v1);
+
+ v1 += 4;
+ v2 += 4;
+ v3 += 4;
+ v4 += 4;
+ v5 += 4;
+ } while (--lines > 0);
+}
diff --git a/lib/raid/xor/powerpc/xor_vmx_glue.c a/lib/raid/xor/powerpc/xor_vmx_glue.c
new file mode 100644
--- /dev/null
+++ a/lib/raid/xor/powerpc/xor_vmx_glue.c
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Altivec XOR operations
+ *
+ * Copyright 2017 IBM Corp.
+ */
+
+#include <linux/preempt.h>
+#include <linux/sched.h>
+#include <linux/raid/xor_impl.h>
+#include <asm/switch_to.h>
+#include <asm/xor.h>
+#include "xor_vmx.h"
+
+static void xor_altivec_2(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2)
+{
+ preempt_disable();
+ enable_kernel_altivec();
+ __xor_altivec_2(bytes, p1, p2);
+ disable_kernel_altivec();
+ preempt_enable();
+}
+
+static void xor_altivec_3(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2,
+ const unsigned long * __restrict p3)
+{
+ preempt_disable();
+ enable_kernel_altivec();
+ __xor_altivec_3(bytes, p1, p2, p3);
+ disable_kernel_altivec();
+ preempt_enable();
+}
+
+static 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)
+{
+ preempt_disable();
+ enable_kernel_altivec();
+ __xor_altivec_4(bytes, p1, p2, p3, p4);
+ disable_kernel_altivec();
+ preempt_enable();
+}
+
+static 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)
+{
+ preempt_disable();
+ enable_kernel_altivec();
+ __xor_altivec_5(bytes, p1, p2, p3, p4, p5);
+ disable_kernel_altivec();
+ preempt_enable();
+}
+
+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,
+};
diff --git a/lib/raid/xor/powerpc/xor_vmx.h a/lib/raid/xor/powerpc/xor_vmx.h
new file mode 100664
--- /dev/null
+++ a/lib/raid/xor/powerpc/xor_vmx.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Simple interface to link xor_vmx.c and xor_vmx_glue.c
+ *
+ * Separating these file ensures that no altivec instructions are run
+ * outside of the enable/disable altivec block.
+ */
+
+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);
_
Patches currently in -mm which might be from hch@lst.de are
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2026-04-03 6:41 [merged mm-nonmm-stable] powerpc-move-the-xor-code-to-lib-raid.patch removed from -mm tree Andrew Morton
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