linux-kernel - Re: [gentoo-user] RAM installed vs reported

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Message-ID: <4B406CDF.7010301@asyr.hopto.org>
Date:	Sun, 03 Jan 2010 12:09:35 +0200
From:	Thanasis <thanasis@...r.hopto.org>
To:	Krzysztof Halasa <khc@...waw.pl>
CC:	gentoo-user@...ts.gentoo.org,
	Dirk Heinrichs <dirk.heinrichs@...ine.de>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [gentoo-user] RAM installed vs reported

on 01/01/2010 03:38 PM Krzysztof Halasa wrote the following:
> Thanasis <thanasis@...r.hopto.org> writes:
>
>   
>>> Depends on the "split" used. With 2 GB : 2 GB you can have all-lowmem
>>> 1.5 GB RAM, without CONFIG_HIGHMEM*. 2 GB of per-process address space
>>> is usually not a problem.
>>>       
>> How do you implement that? What do you mean 2GB:2GB split ?
>>     
> See "make menuconfig", Processor type and features -> Memory split. You
> need to select "EMBEDDED" and "EXPERIMENTAL" first. What you need for
> 1.5 GB RAM is VMSPLIT_2G.
>
> The idea is that the CPU address space is divided: ca. 2 GB (in this
> configuration) for user space (for each process - instead of 3 GB),
> 2 GB - 128 MB (or something like that, I don't remember exactly) for
> physical RAM, and the last 128 MB or so for PCI devices and other
> things.
>   
Hmm..., but are EMBEDDED options suitable for a netbook like the A110L ?
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