linux-kernel - Re: [PATCH v4 10/12] RISC-V: crypto: add Zvkned accelerated AES encryption implementation

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Message-Id: <1BB805D3-FF47-4A58-8507-CCA72A27DD82@sifive.com>
Date:   Tue, 12 Sep 2023 15:15:31 +0800
From:   Jerry Shih <jerry.shih@...ive.com>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     Eric Biggers <ebiggers@...nel.org>,
        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 10/12] RISC-V: crypto: add Zvkned accelerated AES
 encryption implementation

On Sep 12, 2023, at 15:04, Ard Biesheuvel <ardb@...nel.org> wrote:

>> We have further optimization for RISC-V platform in OpenSSL PR[1]. It will include
>> AES with CBC, CTR, and XTS mode. Comparing to the generic AES implementation,
>> the specialized AES-XTS one have about 3X performance improvement using
>> OpenSSL benchmark tool. If OpenSSL accepts that PR, we will create the
>> corresponding patch for Linux kernel.
>> 
>> [1]
>> https://github.com/openssl/openssl/pull/21923
>> 
> 
> This pull request doesn't appear to contain any XTS code at all, only CBC.

We have some license issues for upstream. We will append the specialized
AES modes soon.

-Jerry