From: Robert Hancock <hancockr@shaw.ca>
To: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: BIOS detects 4 GB RAM, but kernel does not
Date: Thu, 27 Jul 2006 13:41:19 -0600 [thread overview]
Message-ID: <44C916DF.6080200@shaw.ca> (raw)
In-Reply-To: <mH3yg.16777$2u4.7977@trnddc06>
Jean-David Beyer wrote:
> You need to compile with
>
> # CONFIG_NOHIGHMEM is not set
> # CONFIG_HIGHMEM4G is not set
> CONFIG_HIGHMEM64G=y
> CONFIG_HIGHMEM=y
> CONFIG_HIGHPTE=y
> CONFIG_X86_PAE=y
> CONFIG_HIGHIO=y
> CONFIG_X86_4G=y
> CONFIG_X86_SWITCH_PAGETABLES=y
> CONFIG_X86_4G_VM_LAYOUT=y
> CONFIG_X86_UACCESS_INDIRECT=y
> CONFIG_X86_HIGH_ENTRY=y
>
> in your .config (for *86 machines) to get 4G of user and 4G of system space.
> I so or know how much sense this would make for a 4G of RAM machine. I never
> tried it when this machine had only 4G, but that is what is required to get
> all 4G in a single user process now that I have 8G.
Those options are not applicable on an x86-64 kernel.
--
Robert Hancock Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/
next prev parent reply other threads:[~2006-07-27 19:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1153931278.034068.54630@h48g2000cwc.googlegroups.com>
2006-07-26 16:54 ` BIOS detects 4 GB RAM, but kernel does not Robert Hancock
2006-07-28 17:03 ` Jan Engelhardt
2006-07-28 17:06 ` Robert Hancock
[not found] ` <1153933737.200164.160870@m73g2000cwd.googlegroups.com>
[not found] ` <1154007393.940693.259680@i42g2000cwa.googlegroups.com>
[not found] ` <mH3yg.16777$2u4.7977@trnddc06>
2006-07-27 19:41 ` Robert Hancock [this message]
[not found] ` <1154112339.037481.119210@p79g2000cwp.googlegroups.com>
2006-07-29 2:04 ` Robert Hancock
2006-07-29 22:21 ` Andi Kleen
[not found] ` <fa.6TLi9h8OI9J6KX0+lv+D4/CEU0U@ifi.uio.no>
[not found] ` <fa.adpnQx0XAWgd4+g2tR5HDa2qHDw@ifi.uio.no>
[not found] ` <1154145714.279248.233230@m73g2000cwd.googlegroups.com>
2006-07-29 18:12 ` Robert Hancock
[not found] ` <1154143992.635239.225440@p79g2000cwp.googlegroups.com>
2006-07-29 18:25 ` Robert Hancock
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