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Message-ID: <20151117130633.GB8032@gondor.apana.org.au>
Date: Tue, 17 Nov 2015 21:06:33 +0800
From: Herbert Xu <herbert@...dor.apana.org.au>
To: Tim Chen <tim.c.chen@...ux.intel.com>
Cc: "H. Peter Anvin" <hpa@...or.com>,
"David S.Miller" <davem@...emloft.net>,
Stephan Mueller <smueller@...onox.de>,
Chandramouli Narayanan <mouli_7982@...oo.com>,
Vinodh Gopal <vinodh.gopal@...el.com>,
James Guilford <james.guilford@...el.com>,
Wajdi Feghali <wajdi.k.feghali@...el.com>,
Jussi Kivilinna <jussi.kivilinna@....fi>,
linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/5] crypto: Multi-buffer encryptioin infrastructure
support
On Thu, Oct 29, 2015 at 03:21:03PM -0700, Tim Chen wrote:
>
> c) Add support to crypto scatterwalk support that can sleep during
> encryption operation, as we may have buffers for jobs in data lanes
> that are half-finished, waiting for additional jobs to come to fill
> empty lanes before we start the encryption again. Therefore, we need to
> enhance crypto walk with the option to map data buffers non-atomically.
> This is done by algorithms run from crypto daemon who knows it is safe
> to do so as it can save and restore FPU state in correct context.
What about the existing ablkcipher scatterwalk helpers?
Cheers,
--
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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