From: Joey Gouly <joey.gouly@arm.com>
To: <linux-arm-kernel@lists.infradead.org>
Cc: <nd@arm.com>, <catalin.marinas@arm.com>, <joey.gouly@arm.com>,
<mark.rutland@arm.com>, <robin.murphy@arm.com>, <will@kernel.org>
Subject: [PATCH v1 0/3] Import Arm Optimized Routines str{n}cmp functions
Date: Tue, 15 Feb 2022 17:07:20 +0000 [thread overview]
Message-ID: <20220215170723.21266-1-joey.gouly@arm.com> (raw)
Hi all,
The previous str{n}cmp routines were not MTE safe, so were disabled in:
59a68d413808 ("arm64: Mitigate MTE issues with str{n}cmp()")
The Arm Optimized Routines repository recently merged [1] their strcmp.S and
strcmp-mte.S files into a single file that is MTE safe.
Therefore we can import these new MTE safe functions and remove the workaround.
I did some light boot tests using QEMU.
Thanks,
Joey
[1] https://github.com/ARM-software/optimized-routines/commit/7b91c3cdb12b023004cb4dda30a1aa3424329ce6
Joey Gouly (3):
arm64: lib: Import latest version of Arm Optimized Routines' strcmp
arm64: lib: Import latest version of Arm Optimized Routines' strncmp
Revert "arm64: Mitigate MTE issues with str{n}cmp()"
arch/arm64/include/asm/assembler.h | 5 -
arch/arm64/include/asm/string.h | 2 -
arch/arm64/lib/strcmp.S | 240 +++++++++++++++--------------
arch/arm64/lib/strncmp.S | 236 +++++++++++++++++-----------
4 files changed, 269 insertions(+), 214 deletions(-)
--
2.17.1
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next reply other threads:[~2022-02-15 17:10 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-15 17:07 Joey Gouly [this message]
2022-02-15 17:07 ` [PATCH v1 1/3] arm64: lib: Import latest version of Arm Optimized Routines' strcmp Joey Gouly
2022-02-16 16:44 ` Russell King (Oracle)
2022-02-16 18:36 ` Robin Murphy
2022-02-17 10:23 ` Joey Gouly
2022-02-25 14:21 ` Will Deacon
2022-02-15 17:07 ` [PATCH v1 2/3] arm64: lib: Import latest version of Arm Optimized Routines' strncmp Joey Gouly
2022-02-15 17:07 ` [PATCH v1 3/3] Revert "arm64: Mitigate MTE issues with str{n}cmp()" Joey Gouly
2022-02-16 16:30 ` [PATCH v1 0/3] Import Arm Optimized Routines str{n}cmp functions Mark Rutland
2022-02-16 16:52 ` Russell King (Oracle)
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