From: "H. Peter Anvin" <hpa@zytor.com>
To: "H.J. Lu" <hjl.tools@gmail.com>, Jiri Kosina <jkosina@suse.cz>
Cc: LKML <linux-kernel@vger.kernel.org>, Josh Boyer <jwboyer@redhat.com>
Subject: Re: [PATCH] binfmt_elf: fix PIE load with randomization disabled
Date: Mon, 09 Dec 2013 13:39:42 -0800 [thread overview]
Message-ID: <52A6389E.90404@zytor.com> (raw)
In-Reply-To: <CAMe9rOr06QeTGe4OC5_JYtfdziYj8NsRgS5=arEJY3BTqeLMVg@mail.gmail.com>
On 12/09/2013 01:03 PM, H.J. Lu wrote:
>
> No, please don't do that. Normally, PIE has zero load address and kernel
> can load it anywhere. There are multiple reasons why PIE has non-zero
> load address. Saying you need to load a program above 4GB under x86-64,
> you can't do that with normal dynamic executable. PIE with non-zero load
> address is the only way to do that on x86-64.
>
Why does it have to be PIE?
-hpa
next prev parent reply other threads:[~2013-12-09 21:40 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-09 15:50 [PATCH] binfmt_elf: fix PIE load with randomization disabled H.J. Lu
2013-12-09 20:57 ` Jiri Kosina
2013-12-09 21:03 ` H.J. Lu
2013-12-09 21:13 ` Jiri Kosina
2013-12-09 21:47 ` H.J. Lu
2013-12-09 21:49 ` H. Peter Anvin
2013-12-09 21:52 ` H.J. Lu
2013-12-09 21:53 ` H. Peter Anvin
2013-12-09 21:59 ` H.J. Lu
2013-12-09 22:01 ` H. Peter Anvin
2013-12-09 22:03 ` H.J. Lu
2013-12-11 13:36 ` Jiri Kosina
2013-12-11 13:41 ` H.J. Lu
2013-12-11 17:49 ` H. Peter Anvin
2013-12-11 18:21 ` H.J. Lu
2013-12-11 19:43 ` H. Peter Anvin
2013-12-11 20:02 ` H.J. Lu
2013-12-09 21:51 ` Jiri Kosina
2013-12-09 21:39 ` H. Peter Anvin [this message]
2013-12-09 21:44 ` H.J. Lu
2013-12-09 23:35 ` H. Peter Anvin
2013-12-09 23:53 ` H.J. Lu
2013-12-10 0:37 ` H. Peter Anvin
2013-12-10 0:41 ` H.J. Lu
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