From: Andi Kleen <andi@firstfloor.org>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Andi Kleen <andi@firstfloor.org>, Ingo Molnar <mingo@redhat.com>,
Arjan van de Ven <arjan@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH, RFC] shmat: introduce flag SHM_MAP_HINT
Date: Tue, 7 Oct 2008 15:14:20 +0200 [thread overview]
Message-ID: <20081007131420.GK20740@one.firstfloor.org> (raw)
In-Reply-To: <20081007133132.69f69cc0@lxorguk.ukuu.org.uk>
> I also don't see the point of this interface. We have POSIX shared memory
> objects in Linux which are much cleaner and neater. They support mmap()
> and mmap supports address hints.
>
> There seems to be no reason at all to add further hacks to the historical
> ugly SYS5 interface.
Typically it's because some other parts of the interfaces that
cannot be easily changed (X shm would come to mind) need it.
He also needs it for the qemu syscall emulation. Even when he uses the compat
entry point shmat() will still only follow the personality.
-Andi
--
ak@linux.intel.com
next prev parent reply other threads:[~2008-10-07 13:08 UTC|newest]
Thread overview: 32+ 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 8:02 ` Ingo Molnar
2008-10-03 9:25 ` Kirill A. Shutemov
2008-10-03 12:44 ` Arjan van de Ven
2008-10-03 12:58 ` Kirill A. Shutemov
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 9:17 ` Kirill A. Shutemov
2008-10-06 9:56 ` Andi Kleen
2008-10-06 10:12 ` Kirill A. Shutemov
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 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 8:20 ` Andi Kleen
2008-10-07 10:09 ` Kirill A. Shutemov
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 15:10 ` Andi Kleen
2008-10-07 11:08 ` [PATCH, RFC] " KOSAKI Motohiro
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 11:30 ` Kirill A. Shutemov
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 13:14 ` Andi Kleen [this message]
2008-10-03 9:33 ` [PATCH] x86_64: Implement personality ADDR_LIMIT_32BIT Kirill A. Shutemov
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