All of lore.kernel.org
 help / color / mirror / Atom feed
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


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

             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)

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20220215170723.21266-1-joey.gouly@arm.com \
    --to=joey.gouly@arm.com \
    --cc=catalin.marinas@arm.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=mark.rutland@arm.com \
    --cc=nd@arm.com \
    --cc=robin.murphy@arm.com \
    --cc=will@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.