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Date: Tue, 22 Dec 2015 12:08:17 -0600 (CST)
From: Christoph Lameter <>
To: Dave Hansen <>
cc:, Pekka Enberg <>, 
    David Rientjes <>, Joonsoo Kim <>, 
    Andrew Morton <>, 
    Laura Abbott <>,,, Kees Cook <>
Subject: Re: [RFC][PATCH 6/7] mm: Add Kconfig option for
 slab sanitization

On Tue, 22 Dec 2015, Dave Hansen wrote:

> > Why would you use zeros? The point is just to clear the information right?
> > The regular poisoning does that.
> It then allows you to avoid the zeroing at allocation time.

Well much of the code is expecting a zeroed object from the allocator and
its zeroed at that time. Zeroing makes the object cache hot which is an
important performance aspect.

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