From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] x86_64: Implement personality ADDR_LIMIT_32BIT
Date: Mon, 6 Oct 2008 13:12:22 +0300 [thread overview]
Message-ID: <20081006101221.GA21183@localhost.localdomain> (raw)
In-Reply-To: <20081006095628.GE3180@one.firstfloor.org>
[-- Attachment #1: Type: text/plain, Size: 956 bytes --]
On Mon, Oct 06, 2008 at 11:56:28AM +0200, Andi Kleen wrote:
> > > And personality() is not thread local/safe, so it's not a particularly
> > > good interface to use later.
> >
> > qemu can call personality() before any threads will be created.
>
> It still makes it unsuitable for a lot of other applications.
> e.g. a JVM using 32bit pointers couldn't use it because it would
> affect native C threads running in the same process.
>
> >
> > > Per system call switches are preferable
> > > and more flexible.
> >
> > Per syscall switches are cool, but I don't see any advantage from it for
> > qemu.
>
> Linux interfaces are not supposed to be "interfaces for qemu" but generally
> applicable interfaces.
I know. What about adding both personality() and flag for shmat()? I can
prepare patch that implement flag for shmat().
--
Regards, Kirill A. Shutemov
+ Belarus, Minsk
+ ALT Linux Team, http://www.altlinux.com/
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 197 bytes --]
next prev parent reply other threads:[~2008-10-06 10:11 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-03 7:04 [PATCH] x86_64: Implement personality ADDR_LIMIT_32BIT Kirill A. Shutemov
2008-10-03 7:04 ` Kirill A. Shutemov
2008-10-03 8:02 ` Ingo Molnar
2008-10-03 8:02 ` Ingo Molnar
2008-10-03 9:25 ` Kirill A. Shutemov
2008-10-03 12:44 ` Arjan van de Ven
2008-10-03 12:44 ` Arjan van de Ven
2008-10-03 12:58 ` Kirill A. Shutemov
2008-10-06 6:13 ` Andi Kleen
2008-10-06 6:13 ` Andi Kleen
2008-10-06 8:17 ` Kirill A. Shutemov
2008-10-06 8:42 ` Andi Kleen
2008-10-06 8:42 ` Andi Kleen
2008-10-06 9:17 ` Kirill A. Shutemov
2008-10-06 9:56 ` Andi Kleen
2008-10-06 9:56 ` Andi Kleen
2008-10-06 10:12 ` Kirill A. Shutemov [this message]
2008-10-06 13:26 ` Andi Kleen
2008-10-06 13:26 ` Andi Kleen
2008-10-06 14:37 ` [PATCH, RFC] shmat: introduce flag SHM_MAP_HINT Kirill A. Shutemov
2008-10-06 14:37 ` Kirill A. Shutemov
2008-10-06 19:29 ` Andi Kleen
2008-10-06 19:29 ` Andi Kleen
2008-10-07 6:57 ` Kirill A. Shutemov
2008-10-07 6:57 ` [PATCH, RFC, v2] " Kirill A. Shutemov
2008-10-07 6:57 ` Kirill A. Shutemov
2008-10-07 8:20 ` Andi Kleen
2008-10-07 8:20 ` Andi Kleen
2008-10-07 10:09 ` Kirill A. Shutemov
2008-10-07 11:26 ` Andi Kleen
2008-10-07 11:26 ` Andi Kleen
2008-10-07 11:23 ` Kirill A. Shutemov
2008-10-07 14:38 ` Hugh Dickins
2008-10-07 14:38 ` Hugh Dickins
2008-10-07 15:10 ` Andi Kleen
2008-10-07 15:10 ` Andi Kleen
2008-10-07 11:08 ` [PATCH, RFC] " KOSAKI Motohiro
2008-10-07 11:08 ` KOSAKI Motohiro
2008-10-07 11:21 ` Andi Kleen
2008-10-07 11:21 ` Andi Kleen
2008-10-07 11:21 ` Kirill A. Shutemov
2008-10-07 11:26 ` KOSAKI Motohiro
2008-10-07 11:26 ` KOSAKI Motohiro
2008-10-07 11:30 ` Kirill A. Shutemov
2008-10-07 11:50 ` Andi Kleen
2008-10-07 11:50 ` Andi Kleen
2008-10-07 11:24 ` Kirill A. Shutemov
2008-10-07 12:31 ` Alan Cox
2008-10-07 12:31 ` Alan Cox
2008-10-07 13:14 ` Andi Kleen
2008-10-07 13:14 ` Andi Kleen
2008-10-03 9:33 ` [PATCH] x86_64: Implement personality ADDR_LIMIT_32BIT Kirill A. Shutemov
2008-10-03 9:33 ` Kirill A. Shutemov
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=20081006101221.GA21183@localhost.localdomain \
--to=kirill@shutemov.name \
--cc=akpm@linux-foundation.org \
--cc=andi@firstfloor.org \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mingo@elte.hu \
--cc=mingo@redhat.com \
--cc=tglx@linutronix.de \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.