linux-kernel - Re: [PATCH v5 1/3] create SMAF module

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Message-ID: <alpine.LRH.2.20.1510220119590.6421@namei.org>
Date:	Thu, 22 Oct 2015 01:32:39 +1100 (AEDT)
From:	James Morris <jmorris@...ei.org>
To:	Benjamin Gaignard <benjamin.gaignard@...aro.org>
cc:	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, daniel.vetter@...ll.ch,
	robdclark@...il.com, treding@...dia.com, sumit.semwal@...aro.org,
	tom.cooksey@....com, daniel.stone@...labora.com,
	linux-security-module@...r.kernel.org, xiaoquan.li@...antecorp.com,
	labbott@...hat.com, tom.gall@...aro.org,
	linaro-mm-sig@...ts.linaro.org
Subject: Re: [PATCH v5 1/3] create SMAF module

On Wed, 21 Oct 2015, Benjamin Gaignard wrote:

> Secure Memory Allocation Framework goal is to be able
> to allocate memory that can be securing.
> There is so much ways to allocate and securing memory that SMAF
> doesn't do it by itself but need help of additional modules.
> To be sure to use the correct allocation method SMAF implement
> deferred allocation (i.e. allocate memory when only really needed)
> 
> Allocation modules (smaf-alloctor.h):
> SMAF could manage with multiple allocation modules at same time.
> To select the good one SMAF call match() to be sure that a module
> can allocate memory for a given list of devices. It is to the module
> to check if the devices are compatible or not with it allocation
> method.
> 
> Securing module (smaf-secure.h):
> The way of how securing memory it is done is platform specific.
> Secure module is responsible of grant/revoke memory access.
> 

This documentation is highly inadequate.

What does "allocate memory that can be securing" mean?


-- 
James Morris
<jmorris@...ei.org>

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