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

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

[Frederic TEMPORELLI]

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 ?
 
Regards

--
Frederic TEMPORELLI

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

[Kumba]

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