From: Andi Kleen <ak@suse.de>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Vinay Venkataraghavan <raghavanvinay@yahoo.com>,
linux-kernel@vger.kernel.org
Subject: Re: copy_from_user/copy_to_user question
Date: 03 Dec 2005 15:33:02 -0700 [thread overview]
Message-ID: <p73lkz14xr5.fsf@verdi.suse.de> (raw)
In-Reply-To: <1133575346.4894.7.camel@localhost.localdomain>
Steven Rostedt <rostedt@goodmis.org> writes:
>
> I haven't dealt (yet) with the copy_user of x86_64. Is there a problem
> when one tries to copy to/from a 32 bit address while in a 64 bit
> address space?
No problem, except on UML/x86-64 which has fully separate address spaces.
Architectures where it doesn't work include s390,m68k,pa-risc,sparc64,
i386 with 4/4 patches among others.
-Andi
next prev parent reply other threads:[~2005-12-03 18:03 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-02 22:40 copy_from_user/copy_to_user question Vinay Venkataraghavan
2005-12-03 1:09 ` Steven Rostedt
2005-12-03 1:38 ` Al Viro
2005-12-03 2:02 ` Steven Rostedt
2005-12-03 2:11 ` Vinay Venkataraghavan
2005-12-03 2:22 ` Vinay Venkataraghavan
2005-12-03 2:27 ` Steven Rostedt
2005-12-03 8:33 ` Arjan van de Ven
2005-12-03 9:43 ` Heiko Carstens
2005-12-03 12:14 ` Steven Rostedt
2005-12-03 22:33 ` Andi Kleen [this message]
2005-12-05 13:31 ` linux-os (Dick Johnson)
[not found] <5fv0G-3kS-11@gated-at.bofh.it>
[not found] ` <5fvam-3vP-9@gated-at.bofh.it>
2005-12-03 2:47 ` Robert Hancock
2005-12-03 3:23 ` Steven Rostedt
2005-12-03 3:33 ` Robert Hancock
2005-12-03 4:53 ` Steven Rostedt
2005-12-03 22:35 ` Andi Kleen
2005-12-03 18:26 ` Steven Rostedt
2005-12-06 17:53 ` Vinay Venkataraghavan
2005-12-06 17:56 ` Arjan van de Ven
2005-12-06 18:23 ` Steven Rostedt
2005-12-06 18:23 ` linux-os (Dick Johnson)
2005-12-06 18:42 ` Steven Rostedt
2005-12-06 19:58 ` linux-os (Dick Johnson)
2005-12-06 20:05 ` Vinay Venkataraghavan
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=p73lkz14xr5.fsf@verdi.suse.de \
--to=ak@suse.de \
--cc=linux-kernel@vger.kernel.org \
--cc=raghavanvinay@yahoo.com \
--cc=rostedt@goodmis.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