[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <alpine.DEB.2.20.1512221207230.14406@east.gentwo.org>
Date: Tue, 22 Dec 2015 12:08:17 -0600 (CST)
From: Christoph Lameter <cl@...ux.com>
To: Dave Hansen <dave.hansen@...el.com>
cc: kernel-hardening@...ts.openwall.com, Pekka Enberg <penberg@...nel.org>,
David Rientjes <rientjes@...gle.com>, Joonsoo Kim <iamjoonsoo.kim@....com>,
Andrew Morton <akpm@...ux-foundation.org>,
Laura Abbott <laura@...bott.name>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org, Kees Cook <keescook@...omium.org>
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.
Powered by blists - more mailing lists
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
