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From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
To: Stian Halseth <stian@itx.no>, Eric Biggers <ebiggers@kernel.org>,
	 linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, Ard Biesheuvel <ardb@kernel.org>,
	"Jason A . Donenfeld" <Jason@zx2c4.com>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	sparclinux@vger.kernel.org
Subject: Re: [PATCH v3] crypto: aes - Fix undesired override of some optimized AES modes
Date: Wed, 30 Sep 2026 11:27:28 +0200	[thread overview]
Message-ID: <3ea57d640ac7409fa37b15ec9e3f49126347e432.camel@physik.fu-berlin.de> (raw)
In-Reply-To: <25c7a7c7bbe3c7f70fca559867e0883b9e4dc48d.camel@itx.no>

Hi Stian,

On Wed, 2026-09-30 at 11:15 +0200, Stian Halseth wrote:
> On Wed, 2026-09-30 at 09:41 +0200, John Paul Adrian Glaubitz wrote:
> > 
> > 
> > 
> > Very nice! Do you know which SPARC CPUs support these instructions?
> > 
> > Adrian
> > 
> 
> SPARC T4 or later.

OK, thanks.

> The T2 and T3 has a separate crypto unit, but not supported here. 
> Support was removed from the kernel in 6.14. Haven't tested it, as I
> don't have the hardware.

Why was it removed? I'm not happy about such removals as long as the
hardware is supported.

> Also worth noting, it's only used when the firmware lists the machine
> description's hwcap-list and the CFR has its bit set. 

Is that not the case by default?

> I have no idea about Fujitsu's SPARC64 X family.

I think SPARC64 X is not supported by the Linux kernel at all, is it?

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913

  reply	other threads:[~2026-09-30  9:27 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-29 22:27 Eric Biggers
2026-09-30  5:50 ` Ard Biesheuvel
2026-09-30  7:32 ` Stian Halseth
2026-09-30  7:41   ` John Paul Adrian Glaubitz
2026-09-30  9:15     ` Stian Halseth
2026-09-30  9:27       ` John Paul Adrian Glaubitz [this message]
2026-09-30 14:07         ` Stian Halseth
2026-09-30 16:03           ` Magnus Lindholm
2026-09-30 17:25             ` Stian Halseth
2026-09-30 20:12           ` John Paul Adrian Glaubitz
2026-09-30 16:34 ` Eric Biggers

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