linux-kernel - Re: [PATCH v4 00/12] RISC-V: support some cryptography accelerations

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Message-ID: <20231006194741.GA68531@google.com>
Date:   Fri, 6 Oct 2023 19:47:41 +0000
From:   Eric Biggers <ebiggers@...nel.org>
To:     Jerry Shih <jerry.shih@...ive.com>
Cc:     He-Jie Shih <bignose1007@...il.com>,
        Charlie Jenkins <charlie@...osinc.com>,
        Heiko Stuebner <heiko@...ech.de>, palmer@...belt.com,
        paul.walmsley@...ive.com, aou@...s.berkeley.edu,
        herbert@...dor.apana.org.au, davem@...emloft.net,
        conor.dooley@...rochip.com, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org,
        christoph.muellner@...ll.eu,
        Heiko Stuebner <heiko.stuebner@...ll.eu>
Subject: Re: [PATCH v4 00/12] RISC-V: support some cryptography accelerations

On Fri, Sep 15, 2023 at 11:21:28AM +0800, Jerry Shih wrote:
> On Sep 15, 2023, at 09:48, He-Jie Shih <bignose1007@...il.com> wrote:
> 
> > On Sep 14, 2023, at 09:10, Charlie Jenkins <charlie@...osinc.com> wrote:
> > 
> >> On Wed, Sep 13, 2023 at 05:11:44PM -0700, Eric Biggers wrote:
> >>> On Tue, Jul 11, 2023 at 05:37:31PM +0200, Heiko Stuebner wrote:
> >>> 
> >>> Hi Heiko!  Are you still working on this patchset?  And which of its
> >>> prerequisites still haven't been merged upstream?
> >>> 
> >>> - Eric
> >> It is my understanding that Heiko is taking a break from development, I
> >> don't think he will be working on this soon.
> > 
> > We would like to take over these RISC-V vector crypto implementations.
> > Our proposed implementations is under reviewing in OpenSSL pr.
> > And I will check the gluing parts between Linux kernel and OpenSSL.
> 
> The OpenSSL PR is at [1].
> And we are from SiFive.
> 
> -Jerry
> 
> [1]
> https://github.com/openssl/openssl/pull/21923

Hi Jerry, I'm wondering if you have an update on this?  Do you need any help?

I'm also wondering about riscv.pm and the choice of generating the crypto
instructions from .words instead of using the assembler.  It makes it
significantly harder to review the code, IMO.  Can we depend on assembler
support for these instructions, or is that just not ready yet?

- Eric