linux-kernel - Re: [Patch v2 0/6] Enable Qualcomm Crypto Engine on sdm845

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Message-ID: <X7b1ZX5SEMq1PbVN@sol.localdomain>
Date:   Thu, 19 Nov 2020 14:44:53 -0800
From:   Eric Biggers <ebiggers@...nel.org>
To:     Thara Gopinath <thara.gopinath@...aro.org>
Cc:     agross@...nel.org, bjorn.andersson@...aro.org,
        herbert@...dor.apana.org.au, davem@...emloft.net,
        robh+dt@...nel.org, sboyd@...nel.org, mturquette@...libre.com,
        linux-arm-msm@...r.kernel.org, linux-crypto@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org
Subject: Re: [Patch v2 0/6] Enable Qualcomm Crypto Engine on sdm845

On Thu, Nov 19, 2020 at 10:52:27AM -0500, Thara Gopinath wrote:
> Qualcomm crypto engine supports hardware accelerated algorithms for
> encryption and authentication. Enable support for aes,des,3des encryption
> algorithms and sha1,sha256, hmac(sha1),hmac(sha256) authentication
> algorithms on sdm845.The patch series has been tested using the kernel
> crypto testing module tcrypto.ko.

Can you please test CONFIG_CRYPTO_MANAGER_EXTRA_TESTS=y too?  Implementations of
crypto algorithms shouldn't be enabled unless they are passing all tests.

Also, did you compare the performance of this hardware to ARMv8 CE?  I thought
that QCE (at least on other SoCs) isn't very useful because ARMv8 CE is faster.

- Eric