From: "Martin J. Bligh" <mbligh@aracnet.com>
To: "H. Peter Anvin" <hpa@zytor.com>, linux-kernel@vger.kernel.org
Subject: Re: TASK_UNMAPPED_BASE & stack location
Date: Fri, 25 Apr 2003 14:10:32 -0700 [thread overview]
Message-ID: <1750000.1051305030@[10.10.2.4]> (raw)
In-Reply-To: <b8c7no$u59$1@cesium.transmeta.com>
>> Is there any good reason we can't remove TASK_UNMAPPED_BASE, and just
>> shove libraries directly above the program text? Red Hat seems to have
>> patches to dynamically tune it on a per-processes basis anyway ...
>>
>> Moreover, can we put the stack back where it's meant to be, below the
>> program text, in that wasted 128MB of virtual space? Who really wants
>> > 128MB of stack anyway (and can't fix their app)?
>
> That space is NULL pointer trap zone. NULL pointer trapping -> good.
128Mb of it? The bottom page, or even a few Mb, sure ...
but 128Mb seems somewhat excessive ...
M.
next prev parent reply other threads:[~2003-04-25 20:58 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-25 20:32 TASK_UNMAPPED_BASE & stack location Martin J. Bligh
2003-04-25 21:01 ` H. Peter Anvin
2003-04-25 21:10 ` Martin J. Bligh [this message]
2003-04-25 21:12 ` H. Peter Anvin
2003-04-25 22:02 ` Timothy Miller
2003-04-25 22:06 ` Martin J. Bligh
2003-04-25 23:15 ` H. Peter Anvin
2003-04-25 23:19 ` Martin J. Bligh
2003-04-26 0:11 ` H. Peter Anvin
2003-04-26 0:42 ` Hugh Dickins
2003-04-26 5:15 ` Martin J. Bligh
2003-04-26 10:40 ` jlnance
2003-04-26 15:39 ` Martin J. Bligh
2003-04-25 23:52 ` badari
2003-04-25 23:58 ` William Lee Irwin III
2003-04-26 14:37 ` Rik van Riel
2003-04-26 15:03 ` William Lee Irwin III
[not found] <20030425204012$4424@gated-at.bofh.it>
2003-04-25 21:54 ` Andi Kleen
2003-04-25 22:06 ` William Lee Irwin III
2003-04-25 22:10 ` Martin J. Bligh
[not found] <20030425220018$6219@gated-at.bofh.it>
[not found] ` <20030425220018$76b1@gated-at.bofh.it>
[not found] ` <20030425225007$3fae@gated-at.bofh.it>
2003-04-25 22:58 ` Andi Kleen
2003-04-25 23:13 ` Hui Huang
2003-04-25 23:02 Chuck Ebbert
2003-04-25 23:02 Chuck Ebbert
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='1750000.1051305030@[10.10.2.4]' \
--to=mbligh@aracnet.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).