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Date:	Fri, 25 Jul 2014 09:26:05 +0200
From:	Peter Zijlstra <>
To:	Tim Chen <>
Cc:	Herbert Xu <>,
	"H. Peter Anvin" <>,
	"David S.Miller" <>,
	Ingo Molnar <>,
	Chandramouli Narayanan <>,
	Vinodh Gopal <>,
	James Guilford <>,
	Wajdi Feghali <>,
	Jussi Kivilinna <>,
	Thomas Gleixner <>,
	Tadeusz Struk <>,,,
Subject: Re: [PATCH v5 2/7] crypto: SHA1 multibuffer crypto hash

On Tue, Jul 22, 2014 at 03:09:32PM -0700, Tim Chen wrote:
> This patch introduces the multi-buffer crypto daemon which is responsible
> for submitting crypto jobs in a work queue to the responsible multi-buffer
> crypto algorithm.  The idea of the multi-buffer algorihtm is to put
> data streams from multiple jobs in a wide (AVX2) register and then
> take advantage of SIMD instructions to do crypto computation on several
> buffers simultaneously.
> The multi-buffer crypto daemon is also responsbile for flushing the
> remaining buffers to complete the computation if no new buffers arrive
> for a while.

How is any of this SHA1 specific as the Subject says it is?
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