From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org,hch@lst.de,akpm@linux-foundation.org
Subject: [to-be-updated] xor-avoid-indirect-calls-for-arm64-optimized-ops.patch removed from -mm tree
Date: Fri, 27 Mar 2026 10:32:13 -0700 [thread overview]
Message-ID: <20260327173214.3E5DCC19423@smtp.kernel.org> (raw)
The quilt patch titled
Subject: xor: avoid indirect calls for arm64-optimized ops
has been removed from the -mm tree. Its filename was
xor-avoid-indirect-calls-for-arm64-optimized-ops.patch
This patch was dropped because an updated version will be issued
------------------------------------------------------
From: Christoph Hellwig <hch@lst.de>
Subject: xor: avoid indirect calls for arm64-optimized ops
Date: Tue, 24 Mar 2026 07:21:55 +0100
Remove the inner xor_block_templates, and instead have two separate
actual template that call into the neon-enabled compilation unit.
Link: https://lkml.kernel.org/r/20260324062211.3216301-20-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
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/arm64/include/asm/xor.h | 13 ++-
lib/raid/xor/arm64/xor-neon-glue.c | 95 +++++++++++++--------------
lib/raid/xor/arm64/xor-neon.c | 73 +++++++-------------
lib/raid/xor/arm64/xor-neon.h | 30 ++++++++
4 files changed, 114 insertions(+), 97 deletions(-)
--- a/arch/arm64/include/asm/xor.h~xor-avoid-indirect-calls-for-arm64-optimized-ops
+++ a/arch/arm64/include/asm/xor.h
@@ -7,15 +7,18 @@
#include <asm-generic/xor.h>
#include <asm/simd.h>
-extern struct xor_block_template xor_block_arm64;
-void __init xor_neon_init(void);
+extern struct xor_block_template xor_block_neon;
+extern struct xor_block_template xor_block_eor3;
#define arch_xor_init arch_xor_init
static __always_inline void __init arch_xor_init(void)
{
- xor_neon_init();
xor_register(&xor_block_8regs);
xor_register(&xor_block_32regs);
- if (cpu_has_neon())
- xor_register(&xor_block_arm64);
+ if (cpu_has_neon()) {
+ if (cpu_have_named_feature(SHA3))
+ xor_register(&xor_block_eor3);
+ else
+ xor_register(&xor_block_neon);
+ }
}
--- a/lib/raid/xor/arm64/xor-neon.c~xor-avoid-indirect-calls-for-arm64-optimized-ops
+++ a/lib/raid/xor/arm64/xor-neon.c
@@ -8,9 +8,10 @@
#include <linux/cache.h>
#include <asm/neon-intrinsics.h>
#include <asm/xor.h>
+#include "xor-neon.h"
-static void xor_arm64_neon_2(unsigned long bytes, unsigned long * __restrict p1,
- const unsigned long * __restrict p2)
+void __xor_neon_2(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2)
{
uint64_t *dp1 = (uint64_t *)p1;
uint64_t *dp2 = (uint64_t *)p2;
@@ -36,9 +37,9 @@ static void xor_arm64_neon_2(unsigned lo
} while (--lines > 0);
}
-static void xor_arm64_neon_3(unsigned long bytes, unsigned long * __restrict p1,
- const unsigned long * __restrict p2,
- const unsigned long * __restrict p3)
+void __xor_neon_3(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2,
+ const unsigned long * __restrict p3)
{
uint64_t *dp1 = (uint64_t *)p1;
uint64_t *dp2 = (uint64_t *)p2;
@@ -72,10 +73,10 @@ static void xor_arm64_neon_3(unsigned lo
} while (--lines > 0);
}
-static void xor_arm64_neon_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_neon_4(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2,
+ const unsigned long * __restrict p3,
+ const unsigned long * __restrict p4)
{
uint64_t *dp1 = (uint64_t *)p1;
uint64_t *dp2 = (uint64_t *)p2;
@@ -117,11 +118,11 @@ static void xor_arm64_neon_4(unsigned lo
} while (--lines > 0);
}
-static void xor_arm64_neon_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)
+void __xor_neon_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)
{
uint64_t *dp1 = (uint64_t *)p1;
uint64_t *dp2 = (uint64_t *)p2;
@@ -171,14 +172,6 @@ static void xor_arm64_neon_5(unsigned lo
} while (--lines > 0);
}
-struct xor_block_template xor_block_inner_neon __ro_after_init = {
- .name = "__inner_neon__",
- .do_2 = xor_arm64_neon_2,
- .do_3 = xor_arm64_neon_3,
- .do_4 = xor_arm64_neon_4,
- .do_5 = xor_arm64_neon_5,
-};
-
static inline uint64x2_t eor3(uint64x2_t p, uint64x2_t q, uint64x2_t r)
{
uint64x2_t res;
@@ -189,10 +182,9 @@ static inline uint64x2_t eor3(uint64x2_t
return res;
}
-static void xor_arm64_eor3_3(unsigned long bytes,
- unsigned long * __restrict p1,
- const unsigned long * __restrict p2,
- const unsigned long * __restrict p3)
+void __xor_eor3_3(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2,
+ const unsigned long * __restrict p3)
{
uint64_t *dp1 = (uint64_t *)p1;
uint64_t *dp2 = (uint64_t *)p2;
@@ -224,11 +216,10 @@ static void xor_arm64_eor3_3(unsigned lo
} while (--lines > 0);
}
-static void xor_arm64_eor3_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_eor3_4(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2,
+ const unsigned long * __restrict p3,
+ const unsigned long * __restrict p4)
{
uint64_t *dp1 = (uint64_t *)p1;
uint64_t *dp2 = (uint64_t *)p2;
@@ -268,12 +259,11 @@ static void xor_arm64_eor3_4(unsigned lo
} while (--lines > 0);
}
-static void xor_arm64_eor3_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)
+void __xor_eor3_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)
{
uint64_t *dp1 = (uint64_t *)p1;
uint64_t *dp2 = (uint64_t *)p2;
@@ -314,12 +304,3 @@ static void xor_arm64_eor3_5(unsigned lo
dp5 += 8;
} while (--lines > 0);
}
-
-void __init xor_neon_init(void)
-{
- if (cpu_have_named_feature(SHA3)) {
- xor_block_inner_neon.do_3 = xor_arm64_eor3_3;
- xor_block_inner_neon.do_4 = xor_arm64_eor3_4;
- xor_block_inner_neon.do_5 = xor_arm64_eor3_5;
- }
-}
--- a/lib/raid/xor/arm64/xor-neon-glue.c~xor-avoid-indirect-calls-for-arm64-optimized-ops
+++ a/lib/raid/xor/arm64/xor-neon-glue.c
@@ -7,51 +7,54 @@
#include <linux/raid/xor_impl.h>
#include <asm/simd.h>
#include <asm/xor.h>
+#include "xor-neon.h"
-extern struct xor_block_template const xor_block_inner_neon;
-
-static void
-xor_neon_2(unsigned long bytes, unsigned long * __restrict p1,
- const unsigned long * __restrict p2)
-{
- scoped_ksimd()
- xor_block_inner_neon.do_2(bytes, p1, p2);
-}
-
-static void
-xor_neon_3(unsigned long bytes, unsigned long * __restrict p1,
- const unsigned long * __restrict p2,
- const unsigned long * __restrict p3)
-{
- scoped_ksimd()
- xor_block_inner_neon.do_3(bytes, p1, p2, p3);
-}
-
-static void
-xor_neon_4(unsigned long bytes, unsigned long * __restrict p1,
- const unsigned long * __restrict p2,
- const unsigned long * __restrict p3,
- const unsigned long * __restrict p4)
-{
- scoped_ksimd()
- xor_block_inner_neon.do_4(bytes, p1, p2, p3, p4);
-}
-
-static void
-xor_neon_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)
-{
- scoped_ksimd()
- xor_block_inner_neon.do_5(bytes, p1, p2, p3, p4, p5);
-}
-
-struct xor_block_template xor_block_arm64 = {
- .name = "arm64_neon",
- .do_2 = xor_neon_2,
- .do_3 = xor_neon_3,
- .do_4 = xor_neon_4,
- .do_5 = xor_neon_5
+#define XOR_TEMPLATE(_name) \
+static void \
+xor_##_name##_2(unsigned long bytes, unsigned long * __restrict p1, \
+ const unsigned long * __restrict p2) \
+{ \
+ scoped_ksimd() \
+ __xor_##_name##_2(bytes, p1, p2); \
+} \
+ \
+static void \
+xor_##_name##_3(unsigned long bytes, unsigned long * __restrict p1, \
+ const unsigned long * __restrict p2, \
+ const unsigned long * __restrict p3) \
+{ \
+ scoped_ksimd() \
+ __xor_##_name##_3(bytes, p1, p2, p3); \
+} \
+ \
+static void \
+xor_##_name##_4(unsigned long bytes, unsigned long * __restrict p1, \
+ const unsigned long * __restrict p2, \
+ const unsigned long * __restrict p3, \
+ const unsigned long * __restrict p4) \
+{ \
+ scoped_ksimd() \
+ __xor_##_name##_4(bytes, p1, p2, p3, p4); \
+} \
+ \
+static void \
+xor_##_name##_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) \
+{ \
+ scoped_ksimd() \
+ __xor_##_name##_5(bytes, p1, p2, p3, p4, p5); \
+} \
+ \
+struct xor_block_template xor_block_##_name = { \
+ .name = __stringify(_name), \
+ .do_2 = xor_##_name##_2, \
+ .do_3 = xor_##_name##_3, \
+ .do_4 = xor_##_name##_4, \
+ .do_5 = xor_##_name##_5 \
};
+
+XOR_TEMPLATE(neon);
+XOR_TEMPLATE(eor3);
diff --git a/lib/raid/xor/arm64/xor-neon.h a/lib/raid/xor/arm64/xor-neon.h
new file mode 100644
--- /dev/null
+++ a/lib/raid/xor/arm64/xor-neon.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+void __xor_neon_2(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2);
+void __xor_neon_3(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2,
+ const unsigned long * __restrict p3);
+void __xor_neon_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_neon_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);
+
+#define __xor_eor3_2 __xor_neon_2
+void __xor_eor3_3(unsigned long bytes, unsigned long * __restrict p1,
+ const unsigned long * __restrict p2,
+ const unsigned long * __restrict p3);
+void __xor_eor3_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_eor3_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
xor-make-xorko-self-contained-in-lib-raid.patch
xor-add-a-better-public-api.patch
async_xor-use-xor_gen.patch
btrfs-use-xor_gen.patch
xor-pass-the-entire-operation-to-the-low-level-ops.patch
xor-use-static_call-for-xor_gen.patch
xor-add-a-kunit-test-case.patch
reply other threads:[~2026-03-27 17:32 UTC|newest]
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