From: Jeff Dike <jdike@addtoit.com>
To: "linux-os (Dick Johnson)" <linux-os@analogic.com>
Cc: Tom Spink <tspink@gmail.com>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: UML fails to locate address space
Date: Tue, 20 May 2008 13:35:03 -0400 [thread overview]
Message-ID: <20080520173503.GA10811@c2.user-mode-linux.org> (raw)
In-Reply-To: <Pine.LNX.4.61.0805201117540.12360@chaos.analogic.com>
On Tue, May 20, 2008 at 11:22:08AM -0400, linux-os (Dick Johnson) wrote:
> Does this mean that I cannot mmap() address zero in the kernel
> anymore? I should be able (in the kernel) read anything, and
> then mmap() it to something usable in user-space. If address
> zero is now artifically trapped there are problems being created
> for no good reason at all.
We're operating from userspace here.
In any case, this hasn't happened with any kernel I've seen, but I'm
suspicious that Ubuntu has started treating page zero specially.
Jeff
--
Work email - jdike at linux dot intel dot com
next prev parent reply other threads:[~2008-05-20 17:35 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-20 11:08 UML fails to locate address space Tom Spink
2008-05-20 13:52 ` Jeff Dike
2008-05-20 13:59 ` Tom Spink
2008-05-20 16:10 ` Jeff Dike
2008-05-20 16:43 ` Tom Spink
2008-05-20 17:56 ` Jeff Dike
2008-05-20 18:01 ` Tom Spink
2008-05-20 19:24 ` Jeff Dike
2008-05-20 19:42 ` Tom Spink
2008-05-20 21:27 ` Jeff Dike
2008-05-20 22:03 ` Tom Spink
2008-05-20 23:57 ` Tom Spink
2008-05-21 1:58 ` Jeff Dike
2008-05-20 15:22 ` linux-os (Dick Johnson)
2008-05-20 17:35 ` Jeff Dike [this message]
2008-05-20 21:54 ` linux-os (Dick Johnson)
2008-05-21 2:15 ` Jeff Dike
2008-05-21 12:02 ` Tom Spink
2008-05-21 12:04 ` Tom Spink
2008-05-21 17:58 ` Jeff Dike
2008-05-21 19:01 ` Tom Spink
2008-05-20 21:58 ` linux-os (Dick Johnson)
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=20080520173503.GA10811@c2.user-mode-linux.org \
--to=jdike@addtoit.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-os@analogic.com \
--cc=tspink@gmail.com \
/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