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From: Emanuele Rocca <emanuele.rocca@arm.com>
To: Eric Biggers <ebiggers@kernel.org>
Cc: Ard Biesheuvel <ardb@kernel.org>,
	linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] lib/crc: arm64: use .arch_extension to enable CRC and crypto
Date: Fri, 6 Nov 2026 08:16:56 +0000	[thread overview]
Message-ID: <au2M-JBEobgEETQh@arm.com> (raw)
In-Reply-To: <20261105194220.GC3266627@google.com>

Hi Eric,

On 2026-11-05 07:42, Eric Biggers wrote:
> Thanks.  Just to confirm, all supported versions of binutils and clang
> support this?  (As per Documentation/process/changes.rst, the kernel
> currently supports binutils 2.30 and later, and clang 17.0.1 and later.)

Yes, binutils supports .arch_extension since 2.26:
https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=ae527cd876fe35de72d876d3484e194ccc66232f

$ git tag --contains ae527cd876fe35de72d876d3484e194ccc66232f | head -1
binutils-2_26

clang added support in 8.0.0:
https://releases.llvm.org/8.0.0/docs/ReleaseNotes.html#changes-to-the-aarch64-target

> A lot of the arm64 crypto code uses ".arch armv8-a+crypto".  Should
> those be replaced with ".arch_extension	crypto" for the same reason?

I think so, yes. Let me look more closely, I'll send another series for
those if they need changing as well.

Thanks!
  Emanuele

  reply	other threads:[~2026-11-06  8:17 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-11-05 15:41 [PATCH] lib/crc: arm64: use .arch_extension to enable CRC and crypto Emanuele Rocca
2026-11-05 19:42 ` Eric Biggers
2026-11-06  8:16   ` Emanuele Rocca [this message]
2026-11-06  8:57 ` Ard Biesheuvel
2026-11-07 21:37   ` Eric Biggers

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