From: Marek Vasut <marex@denx.de>
Subject: Re: [PATCH v3 1/3] ima: use ahash API for file hash calculation
Date: Thu, 10 Jul 2014 13:31:25 +0200
Message-ID: <201407101331.25786.marex@denx.de>
References: <cover.1404475462.git.d.kasatkin@samsung.com> <201407101002.07535.marex@denx.de> <53BE7691.3080604@samsung.com>
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Cc: Dmitry Kasatkin <dmitry.kasatkin@gmail.com>,
	Mimi Zohar <zohar@linux.vnet.ibm.com>,
	linux-ima-devel@lists.sourceforge.net,
	"linux-security-module" <linux-security-module@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-crypto" <linux-crypto@vger.kernel.org>
To: Dmitry Kasatkin <d.kasatkin@samsung.com>
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <53BE7691.3080604@samsung.com>
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List-Id: linux-crypto.vger.kernel.org

On Thursday, July 10, 2014 at 01:18:41 PM, Dmitry Kasatkin wrote:
[...]
> > All right, that was my understanding of the entire discussion -- an
> > accelerator dying mid-way and what will IMA do about that.
> > 
> >> But as we fallback to early allocated shash, which is not USB yet,
> >> then there is no problem.
> >> ahash itself does not bring any other additional problem than shash
> >> itself. They are compiled builtin together.
> > 
> > Sure, I understood that. But what will happen if the ahash accelerator
> > stops working mid-flight, will IMA also go bonkers or is there some
> > graceful stop?
> 
> shash fallback will be used.

Ah, thank you for clearing this!

Best regards,
Marek Vasut