linux-kernel - Re: [PATCH v4 3/5] crypto: tegra: Add Tegra Security Engine driver

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Message-ID: <ZcHJoJxe+2gsfIaT@gondor.apana.org.au>
Date: Tue, 6 Feb 2024 13:54:40 +0800
From: Herbert Xu <herbert@...dor.apana.org.au>
To: Akhil R <akhilrajeev@...dia.com>
Cc: "davem@...emloft.net" <davem@...emloft.net>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	"krzysztof.kozlowski+dt@...aro.org" <krzysztof.kozlowski+dt@...aro.org>,
	"conor+dt@...nel.org" <conor+dt@...nel.org>,
	"thierry.reding@...il.com" <thierry.reding@...il.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	"catalin.marinas@....com" <catalin.marinas@....com>,
	"will@...nel.org" <will@...nel.org>,
	Mikko Perttunen <mperttunen@...dia.com>,
	"linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"krzk@...nel.org" <krzk@...nel.org>
Subject: Re: [PATCH v4 3/5] crypto: tegra: Add Tegra Security Engine driver

On Tue, Feb 06, 2024 at 05:50:33AM +0000, Akhil R wrote:
>
> Understood the issue. But I feel it will be a bit overburden for the update()
> to copy/paste these for every call. Let me explore more on the hardware and
> come back with a better approach.

Of course it's a burden to copy it in and out on every update,
that is why we generally use digest and finup instead of update.

As a driver you don't need to worry about this cost.

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