linux-kernel - Re: [PATCH] mm: Enable MAP_UNINITIALIZED for archs with mmu

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Message-ID: <CAKTCnzk7TgDeYRZK0rCugopq0tO7BtM8jM9U0RJUTqNtz42ZKw@mail.gmail.com>
Date:	Fri, 24 Feb 2012 20:21:18 +0530
From:	Balbir Singh <bsingharora@...il.com>
To:	Arun Sharma <asharma@...com>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	akpm@...ux-foundation.org,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [PATCH] mm: Enable MAP_UNINITIALIZED for archs with mmu

On Fri, Feb 24, 2012 at 8:17 AM, KAMEZAWA Hiroyuki
<kamezawa.hiroyu@...fujitsu.com> wrote:
>> They don't have access to each other's VMAs, but if "accidentally" one
>> of them comes across an uninitialized page with data from another task,
>> it's not a violation of the security model.

Can you expand more on the single address space model?

Balbir
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