From: Andi Kleen <ak@suse.de>
To: Dave McCracken <dmccr@us.ibm.com>
Cc: Ray Bryant <raybry@mpdtxmail.amd.com>, Robin Holt <holt@sgi.com>,
Hugh Dickins <hugh@veritas.com>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Linux Memory Management <linux-mm@kvack.org>
Subject: Re: [PATCH/RFC] Shared page tables
Date: Tue, 24 Jan 2006 02:11:58 +0100 [thread overview]
Message-ID: <200601240211.59171.ak@suse.de> (raw)
In-Reply-To: <08A96D993E5CB2984F6F448A@[10.1.1.4]>
On Tuesday 24 January 2006 01:51, Dave McCracken wrote:
> Most of the large OLTP applications use fixed address
> mapping for their large shared regions.
Really? That sounds like a quite bad idea because it can easily break
if something changes in the way virtual memory is laid out (which
has happened - e.g. movement to 4level page tables on x86-64 and now
randomized mmaps)
I don't think we should encourage such unportable behaviour.
-Andi
WARNING: multiple messages have this Message-ID (diff)
From: Andi Kleen <ak@suse.de>
To: Dave McCracken <dmccr@us.ibm.com>
Cc: Ray Bryant <raybry@mpdtxmail.amd.com>, Robin Holt <holt@sgi.com>,
Hugh Dickins <hugh@veritas.com>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Linux Memory Management <linux-mm@kvack.org>
Subject: Re: [PATCH/RFC] Shared page tables
Date: Tue, 24 Jan 2006 02:11:58 +0100 [thread overview]
Message-ID: <200601240211.59171.ak@suse.de> (raw)
In-Reply-To: <08A96D993E5CB2984F6F448A@[10.1.1.4]>
On Tuesday 24 January 2006 01:51, Dave McCracken wrote:
> Most of the large OLTP applications use fixed address
> mapping for their large shared regions.
Really? That sounds like a quite bad idea because it can easily break
if something changes in the way virtual memory is laid out (which
has happened - e.g. movement to 4level page tables on x86-64 and now
randomized mmaps)
I don't think we should encourage such unportable behaviour.
-Andi
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next prev parent reply other threads:[~2006-01-24 1:20 UTC|newest]
Thread overview: 109+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-05 16:19 [PATCH/RFC] Shared page tables Dave McCracken
2006-01-07 12:25 ` Heiko Carstens
2006-01-07 12:25 ` Heiko Carstens
2006-01-07 18:09 ` Dave McCracken
2006-01-07 18:09 ` Dave McCracken
2006-01-08 12:09 ` Heiko Carstens
2006-01-08 12:09 ` Heiko Carstens
2006-01-08 14:04 ` Dave McCracken
2006-01-08 14:04 ` Dave McCracken
2006-01-13 5:15 ` Brian Twichell
2006-01-13 5:15 ` Brian Twichell
2006-01-13 22:34 ` Ray Bryant
2006-01-13 22:34 ` Ray Bryant
2006-01-17 4:50 ` Brian Twichell
2006-01-17 4:50 ` Brian Twichell
2006-01-25 4:14 ` Brian Twichell
2006-01-25 4:14 ` Brian Twichell
2006-01-13 15:18 ` Phillip Susi
2006-01-13 15:18 ` Phillip Susi
2006-01-14 20:45 ` Brian Twichell
2006-01-14 20:45 ` Brian Twichell
2006-01-17 23:53 ` Robin Holt
2006-01-17 23:53 ` Robin Holt
2006-01-18 0:17 ` Dave Hansen
2006-01-18 0:17 ` Dave Hansen
2006-01-18 6:11 ` Dave McCracken
2006-01-18 6:11 ` Dave McCracken
2006-01-18 1:27 ` Chen, Kenneth W
2006-01-18 1:27 ` Chen, Kenneth W
2006-01-18 3:32 ` Robin Holt
2006-01-18 3:32 ` Robin Holt
2006-01-23 23:58 ` Ray Bryant
2006-01-23 23:58 ` Ray Bryant
2006-01-24 0:16 ` Ray Bryant
2006-01-24 0:16 ` Ray Bryant
2006-01-24 0:39 ` Andi Kleen
2006-01-24 0:39 ` Andi Kleen
2006-01-24 0:51 ` Dave McCracken
2006-01-24 0:51 ` Dave McCracken
2006-01-24 1:11 ` Andi Kleen [this message]
2006-01-24 1:11 ` Andi Kleen
2006-01-24 1:26 ` Dave McCracken
2006-01-24 1:26 ` Dave McCracken
2006-01-24 0:53 ` Ray Bryant
2006-01-24 0:53 ` Ray Bryant
2006-01-24 1:00 ` Dave McCracken
2006-01-24 1:00 ` Dave McCracken
2006-01-24 1:10 ` Andi Kleen
2006-01-24 1:10 ` Andi Kleen
2006-01-24 1:23 ` Benjamin LaHaise
2006-01-24 1:23 ` Benjamin LaHaise
2006-01-24 1:38 ` Andi Kleen
2006-01-24 1:38 ` Andi Kleen
2006-01-24 7:08 ` Arjan van de Ven
2006-01-24 7:08 ` Arjan van de Ven
2006-01-24 7:06 ` Arjan van de Ven
2006-01-24 7:06 ` Arjan van de Ven
2006-01-24 7:18 ` Andi Kleen
2006-01-24 7:18 ` Andi Kleen
2006-01-27 18:16 ` Martin Bligh
2006-01-27 18:16 ` Martin Bligh
2006-02-01 9:49 ` Nick Piggin
2006-02-01 9:49 ` Nick Piggin
2006-01-24 14:48 ` Dave McCracken
2006-01-24 14:48 ` Dave McCracken
2006-01-24 14:56 ` Arjan van de Ven
2006-01-24 14:56 ` Arjan van de Ven
2006-01-24 0:19 ` Dave McCracken
2006-01-24 0:19 ` Dave McCracken
2006-01-24 0:46 ` Ray Bryant
2006-01-24 0:46 ` Ray Bryant
2006-01-24 23:43 ` Ray Bryant
2006-01-24 23:43 ` Ray Bryant
2006-01-24 23:50 ` Dave McCracken
2006-01-24 23:50 ` Dave McCracken
2006-01-25 0:21 ` Ray Bryant
2006-01-25 0:21 ` Ray Bryant
2006-01-25 22:48 ` Ray Bryant
2006-01-25 22:48 ` Ray Bryant
2006-01-25 22:52 ` Dave McCracken
2006-01-25 22:52 ` Dave McCracken
2006-01-26 0:16 ` Ray Bryant
2006-01-26 0:16 ` Ray Bryant
2006-01-26 0:58 ` Ray Bryant
2006-01-26 0:58 ` Ray Bryant
2006-01-26 4:06 ` Robin Holt
2006-01-26 4:06 ` Robin Holt
2006-01-20 21:24 ` Hugh Dickins
2006-01-20 21:24 ` Hugh Dickins
2006-01-20 21:54 ` Chen, Kenneth W
2006-01-20 21:54 ` Chen, Kenneth W
2006-01-23 17:39 ` Dave McCracken
2006-01-23 17:39 ` Dave McCracken
2006-01-23 20:19 ` Benjamin LaHaise
2006-01-23 20:19 ` Benjamin LaHaise
2006-01-24 17:50 ` Hugh Dickins
2006-01-24 17:50 ` Hugh Dickins
2006-01-24 18:07 ` Dave McCracken
2006-01-24 18:07 ` Dave McCracken
2006-01-24 18:20 ` Hugh Dickins
2006-01-24 18:20 ` Hugh Dickins
2006-01-27 22:50 ` Brian Twichell
2006-01-27 22:50 ` Brian Twichell
2006-01-30 18:46 ` Ray Bryant
2006-01-30 18:46 ` Ray Bryant
2006-01-31 18:47 ` Brian Twichell
2006-01-31 18:47 ` Brian Twichell
2006-01-31 19:18 ` Dave McCracken
2006-01-31 19:18 ` Dave McCracken
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