Subject: Re: increase lowmem value for ppc

From: Marco Stornelli <[email-masked]>
Date: Thu, 17 Jul 2008 13:14:03 +0200

Ruksen INANIR ha scritto:
> 
> Is there a way to increase the lowmem value for ppc. The MAX_LOW_MEM is 
> defined as max 768 MB. But a value around 1.5 G works with no problem. 
> But when i try to increase this value to 1520 or more, kernel complaints 
> about no space for memory allocation when loading kernel modules.
> I do not want to use HIGHMEM config. What is the max lowmem value for a 
> ppc system? What other setting are needed to use 1520 MB (or more) as 
> lowmem .
> The ppc card has 2G on board memory. 2.4.22 kernel is used.
> 
> Thanks
> _______________________________________________
> Linuxppc-embedded mailing list
> [email-masked]
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
> 
With 32-bit arch you may not use more than 1GB to map the memory (minus 
some space for some kernel operation). The value of 768MB was not there 
by chance.

-- 
Marco Stornelli
Embedded Software Engineer
CoRiTeL - Consorzio di Ricerca sulle Telecomunicazioni
http://www.coritel.it

[email-masked]
+39 06 72582838