linux-kernel - Re: Why is "Memory split" Kconfig option only for EMBEDDED?

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Message-ID: <20061209132742.7a25dcb5@localhost.localdomain>
Date:	Sat, 9 Dec 2006 13:27:42 +0100
From:	Alejandro Riveira Fernández 
	<ariveira@...il.com>
To:	Adrian Bunk <bunk@...sta.de>
Cc:	Norbert Kiesel <nkiesel@...networks.com>,
	Arjan van de Ven <arjan@...radead.org>,
	linux-kernel@...r.kernel.org
Subject: Re: Why is "Memory split" Kconfig option only for EMBEDDED?

El Wed, 6 Dec 2006 14:10:03 +0100
Adrian Bunk <bunk@...sta.de> escribió:

> On Wed, Dec 06, 2006 at 01:19:08PM +0100, Norbert Kiesel wrote:
> > On Wed, 2006-12-06 at 12:58 +0100, Arjan van de Ven wrote:
> > > On Wed, 2006-12-06 at 12:42 +0100, Norbert Kiesel wrote:
> > > > Hi,
> > > > 
> > > > I remember reading on LKML some time ago that using VMSPLIT_3G_OPT would
> > > > be optimal for a machine with exactly 1GB memory (like my current
> > > > desktop). Why is that option only prompted for after selecting EMBEDDED
> > > > (which I normally don't select for desktop machines
> > > 
> > > because it changes the userspace ABI and has some other caveats.... this
> > > is not something you should muck with lightly 
> > > 
> > 
> > Hmm, but it's also marked EXPERIMENTAL. Would that not be the
> > sufficient?  Assuming I don't use any external/binary drivers and a
> > self-compiled kernel w//o any additional patches: is there really any
> > downside?
> 
> - Wine doesn't work (I'm not sure about VMSPLIT_3G_OPT, but
>                      VMSPLIT_2G definitely breaks Wine)

 I use VMSPLIT_3G_OPT=y and wine works just fine (only tested with one
 program). Edgy + 2.6.19-rc1



> - AFAIR some people reported problems with some Java programs
>   after fiddling with the vmsplit options
> 
> EMBEDDED isn't exactly the right way to hide it, but the vmsplit options 
> aren't something you can safely change.
> 
> > </nk>
> 
> cu
> Adrian
> 
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