From: Eric Biggers <ebiggers@kernel.org>
To: Ard Biesheuvel <ardb+git@google.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org,
herbert@gondor.apana.org.au, Ard Biesheuvel <ardb@kernel.org>
Subject: Re: [PATCH v3 02/21] crypto/arm64: sm4-ce-ccm - Avoid pointless yield of the NEON unit
Date: Fri, 17 Oct 2025 10:03:35 -0700 [thread overview]
Message-ID: <20251017170335.GC1566@sol> (raw)
In-Reply-To: <20251008154533.3089255-25-ardb+git@google.com>
On Wed, Oct 08, 2025 at 05:45:36PM +0200, Ard Biesheuvel wrote:
> From: Ard Biesheuvel <ardb@kernel.org>
>
> Kernel mode NEON sections are now preemptible on arm64, and so there is
> no need to yield it when calling APIs that may sleep.
>
> Also, move the calls to kernel_neon_end() to the same scope as
> kernel_neon_begin(). This is needed for a subsequent change where a
> stack buffer is allocated transparently and passed to
> kernel_neon_begin().
>
> Acked-by: Eric Biggers <ebiggers@kernel.org>
> [ardb: Simplify convoluted logic]
> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
- Eric
next prev parent reply other threads:[~2025-10-17 17:05 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-08 15:45 [PATCH v3 00/21] arm64: Move kernel mode FPSIMD buffer to the stack Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 01/21] crypto/arm64: aes-ce-ccm - Avoid pointless yield of the NEON unit Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 02/21] crypto/arm64: sm4-ce-ccm " Ard Biesheuvel
2025-10-17 17:03 ` Eric Biggers [this message]
2025-10-08 15:45 ` [PATCH v3 03/21] crypto/arm64: sm4-ce-gcm " Ard Biesheuvel
2025-10-17 17:04 ` Eric Biggers
2025-10-08 15:45 ` [PATCH v3 04/21] arm64/simd: Add scoped guard API for kernel mode SIMD Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 05/21] ARM/simd: " Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 06/21] crypto: aegis128-neon - Move to more abstract 'ksimd' guard API Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 07/21] raid6: " Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 08/21] lib/crc: Switch ARM and arm64 to 'ksimd' scoped " Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 09/21] lib/crypto: " Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 10/21] crypto/arm64: aes-ccm - Switch " Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 11/21] crypto/arm64: aes-blk " Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 12/21] crypto/arm64: aes-gcm " Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 13/21] crypto/arm64: nhpoly1305 " Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 14/21] crypto/arm64: polyval " Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 15/21] crypto/arm64: sha3 " Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 16/21] crypto/arm64: sm3 " Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 17/21] crypto/arm64: sm4 " Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 18/21] arm64/xorblocks: " Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 19/21] net/mlx5: Switch to more abstract scoped ksimd guard API on arm64 Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 20/21] arm64/fpu: Enforce task-context only for generic kernel mode FPU Ard Biesheuvel
2025-10-08 15:45 ` [PATCH v3 21/21] arm64/fpsimd: Allocate kernel mode FP/SIMD buffers on the stack Ard Biesheuvel
2025-10-17 17:12 ` Eric Biggers
2025-10-17 17:07 ` [PATCH v3 00/21] arm64: Move kernel mode FPSIMD buffer to " Eric Biggers
2025-10-21 9:23 ` Ard Biesheuvel
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=20251017170335.GC1566@sol \
--to=ebiggers@kernel.org \
--cc=ardb+git@google.com \
--cc=ardb@kernel.org \
--cc=herbert@gondor.apana.org.au \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-crypto@vger.kernel.org \
--cc=linux-kernel@vger.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).