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linux/arch/arm64/lib
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Marc Zyngier 103423ad7e arm64: Get rid of ARM64_HAS_NO_HW_PREFETCH 
Back in 2016, it was argued that implementations lacking a HW
prefetcher could be helped by sprinkling a number of PRFM
instructions in strategic locations.

In 2023, the one platform that presumably needed this hack is no
longer in active use (let alone maintained), and an quick
experiment shows dropping this hack only leads to a 0.4% drop
on a full kernel compilation (tested on a MT30-GS0 48 CPU system).

Given that this is pretty much in the noise department and that
it may give odd ideas to other implementers, drop the hack for
good.

Suggested-by: Will Deacon <will@kernel.org>
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20231122133754.1240687-1-maz@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
2023-12-05 12:02:52 +00:00
..
clear_page.S arm64: clean up symbol aliasing 2022-02-22 16:21:34 +00:00
clear_user.S arm64: extable: consolidate definitions 2021-10-21 10:45:22 +01:00
copy_from_user.S arm64: lib: __arch_copy_from_user(): fold fixups into body 2021-10-21 10:45:21 +01:00
copy_page.S arm64: Get rid of ARM64_HAS_NO_HW_PREFETCH 2023-12-05 12:02:52 +00:00
copy_template.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
copy_to_user.S arm64: lib: __arch_copy_to_user(): fold fixups into body 2021-10-21 10:45:21 +01:00
crc32.S arm64: lib: accelerate crc32_be 2022-01-31 11:21:43 +11:00
csum.c arm64: csum: Fix OoB access in IP checksum code for negative lengths 2023-09-07 10:15:20 +01:00
delay.c arm64: Avoid cpus_have_const_cap() for ARM64_HAS_WFXT 2023-10-16 14:17:05 +01:00
error-inject.c arm64: Add support for function error injection 2019-08-07 13:53:09 +01:00
insn.c arm64: insn: Add encoders for LDRSB/LDRSH/LDRSW 2023-08-18 15:45:34 +02:00
kasan_sw_tags.S arm64: Use BTI C directly and unconditionally 2021-12-14 18:12:58 +00:00
Makefile isystem: delete global -isystem compile option 2021-09-22 09:26:24 +09:00
memchr.S arm64: clean up symbol aliasing 2022-02-22 16:21:34 +00:00
memcmp.S arm64: clean up symbol aliasing 2022-02-22 16:21:34 +00:00
memcpy.S arm64: clean up symbol aliasing 2022-02-22 16:21:34 +00:00
memset.S arm64: clean up symbol aliasing 2022-02-22 16:21:34 +00:00
mte.S arm64/sysreg: Remove duplicate definitions from asm/sysreg.h 2022-12-01 17:31:12 +00:00
strchr.S arm64: clean up symbol aliasing 2022-02-22 16:21:34 +00:00
strcmp.S Merge branch 'for-next/strings' into for-next/core 2022-03-14 19:02:52 +00:00
strlen.S arm64: clean up symbol aliasing 2022-02-22 16:21:34 +00:00
strncmp.S Merge branch 'for-next/strings' into for-next/core 2022-03-14 19:02:52 +00:00
strnlen.S arm64: clean up symbol aliasing 2022-02-22 16:21:34 +00:00
strrchr.S arm64: clean up symbol aliasing 2022-02-22 16:21:34 +00:00
tishift.S arm64: lib: Use modern annotations for assembly functions 2020-01-08 12:23:02 +00:00
uaccess_flushcache.c arm: uaccess: Remove memcpy_page_flushcache() 2023-03-27 16:26:19 +01:00
xor-neon.c arm64: xor-neon: mark xor_arm64_neon_*() static 2023-05-25 17:44:01 +01:00