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Re: SGI O2 - RAM 320MBytes - linux reports 245MBytes (/proc/meminfo)

To: linux-mips@linux-mips.org
Subject: Re: SGI O2 - RAM 320MBytes - linux reports 245MBytes (/proc/meminfo)
From: Kumba <kumba@gentoo.org>
Date: Sun, 19 Dec 2004 07:29:37 -0500
Cc: Frederic TEMPORELLI <frederic.temporelli@laposte.net>
In-reply-to: <41C556C3.401@laposte.net>
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References: <20041219023850Z8225215-1340+5@linux-mips.org> <41C556C3.401@laposte.net>
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Frederic TEMPORELLI wrote:
Hello,

no way to see (use ?) all available RAM (320MB) on SGI O2 with 2.6.10-rc3 (latest cvs)

Hardware => SGI O2 with 320MBytes in this way:
dimm 1: 32MBytes - dimm2: 32MBytes
dimm 3: 32MBytes - dimm4: 32MBytes
dimm 5: 32MBytes - dimm6: 32MBytes
dimm 7: 64MBytes - dimm8: 64MBytes

Firmware => "hinv" is reporting 320MBytes (OK, match hardware)

Linux Kernel (32 and 64 bits) => /proc/meminfo is reporting a MemTotal of 245436KB
"top" command is reporting same wrong value (more than 64MB missing)

where can I look for in sources to report/use all available RAM ?
can you help me ?

O2, like Indy and I2/R4x00, are limited to 256MB max RAM currently. To see any further, O2 needs HIGHMEM support, which last I checked, doesn't exist.

Patches welcome :)


--Kumba

--
"Such is oft the course of deeds that move the wheels of the world: small hands do them because they must, while the eyes of the great are elsewhere." --Elrond

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