linux-kernel - Re: [PATCH v2 09/10] crypto: caam - add crypto

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Message-ID: <20200114001440.baeadihvlqiucw63@gondor.apana.org.au>
Date:   Tue, 14 Jan 2020 08:14:40 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Iuliana Prodan <iuliana.prodan@....com>
Cc:     Horia Geanta <horia.geanta@....com>,
        Aymen Sghaier <aymen.sghaier@....com>,
        "David S. Miller" <davem@...emloft.net>,
        "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH v2 09/10] crypto: caam - add crypto_engine support for
 RSA algorithms

On Mon, Jan 13, 2020 at 09:48:11AM +0000, Iuliana Prodan wrote:
>
> Regarding the transfer request to crypto-engine: if sending all requests 
> to crypto-engine, multibuffer tests, for non-backlogging requests fail 
> after only 10 requests, since crypto-engine queue has 10 entries.

That isn't right.  The crypto engine should never refuse to accept
a request unless the hardware queue is really full.  Perhaps the
crypto engine code needs to be fixed?

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt