From: Andi Kleen <ak@suse.de>
To: Christoph Lameter <clameter@sgi.com>
Cc: Arjan van de Ven <arjan@infradead.org>,
Christoph Hellwig <hch@infradead.org>,
linux-kernel@vger.kernel.org, akpm@osdl.org,
Hugh Dickins <hugh@veritas.com>, Con Kolivas <kernel@kolivas.org>,
Marcelo Tosatti <marcelo@kvack.org>,
Nick Piggin <nickpiggin@yahoo.com.au>
Subject: Re: [RFC 0/8] Reduce MAX_NR_ZONES and remove useless zones.
Date: Tue, 4 Jul 2006 18:52:25 +0200 [thread overview]
Message-ID: <200607041852.25575.ak@suse.de> (raw)
In-Reply-To: <Pine.LNX.4.64.0607040940110.14152@schroedinger.engr.sgi.com>
On Tuesday 04 July 2006 18:41, Christoph Lameter wrote:
> On Tue, 4 Jul 2006, Arjan van de Ven wrote:
>
> > > will need to have highmem? I guess the 2G/2G
> > > config option changes that?
> >
> > but that breaks userspace ABI and things that really want a lot of
> > memory ;)
>
> Really? What things does it break? Sorry about my i386 ignorance.
There are programs who make address space assumptions for whatever reason.
When you only have 3GB it is precious space.
e.g. old Java also breaks when the AS is larger as on x86-64. That is why
there is a 3GB personality.
>
> > Thankfully x86-64 is there, and just about all systems sold today do 64
> > bit..
>
> Right but then some binary stuff is only available for 32 bit.
That's fine - the x86-64 kernel runs 32bit programs.
-Andi
next prev parent reply other threads:[~2006-07-04 16:53 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-03 21:55 [RFC 0/8] Reduce MAX_NR_ZONES and remove useless zones Christoph Lameter
2006-07-03 21:55 ` [RFC 1/8] Rework mmzone.h: Make DMA32 and HIGHMEM optional Christoph Lameter
2006-07-03 22:28 ` Andi Kleen
2006-07-03 21:55 ` [RFC 2/8] Make display of highmem counters conditional on CONFIG_HIGHMEM Christoph Lameter
2006-07-03 21:55 ` [RFC 3/8] Move HIGHMEM counter into highmem.c/.h Christoph Lameter
2006-07-04 5:47 ` KAMEZAWA Hiroyuki
2006-07-04 5:56 ` Christoph Lameter
2006-07-04 6:20 ` Andrew Morton
2006-07-04 15:20 ` Christoph Lameter
2006-07-04 16:50 ` Nick Piggin
2006-07-05 0:17 ` KAMEZAWA Hiroyuki
2006-07-03 21:55 ` [RFC 4/8] Remove display of counters for not available zones Christoph Lameter
2006-07-03 21:56 ` [RFC 5/8] swap_prefetch: Make use of ZONE_HIGHMEM dependend on CONFIG_HIGHMEM Christoph Lameter
2006-07-03 21:56 ` [RFC 6/8] Fix MAX_NR_ZONES array initializations in various arches Christoph Lameter
2006-07-03 21:56 ` [RFC 7/8] Fix strange uses of MAX_NR_ZONES Christoph Lameter
2006-07-03 21:56 ` [RFC 8/8] Fix i386 SRAT check for MAX_NR_ZONES Christoph Lameter
2006-07-04 5:52 ` KAMEZAWA Hiroyuki
2006-07-04 5:53 ` Christoph Lameter
2006-07-03 22:17 ` [RFC 0/8] Reduce MAX_NR_ZONES and remove useless zones Christoph Hellwig
2006-07-03 23:26 ` Christoph Lameter
2006-07-03 23:47 ` Andi Kleen
2006-07-03 23:53 ` Christoph Lameter
2006-07-04 12:04 ` Christoph Hellwig
2006-07-04 12:02 ` Christoph Hellwig
2006-07-04 15:10 ` Christoph Lameter
2006-07-04 15:23 ` Andi Kleen
2006-07-04 16:16 ` Christoph Lameter
2006-07-04 16:23 ` Arjan van de Ven
2006-07-04 16:41 ` Christoph Lameter
2006-07-04 16:47 ` Arjan van de Ven
2006-07-04 16:52 ` Andi Kleen [this message]
2006-07-04 16:25 ` Andi Kleen
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