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Date: Tue, 1 Nov 2011 10:25:31 -0700
From: Nishanth Aravamudan <nacc@us.ibm.com>
To: Ryan Wang <openspace.wang@gmail.com>
Subject: Re: What does rmo/tce stand for in powerpc?
Message-ID: <20111101172531.GG16267@us.ibm.com>
References: <CAPxxNQnhXaKJ5ve-=0qwChuuvDj_027RM2pSD43DEf6BZbaHDA@mail.gmail.com>
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Hi Ryan,

On 01.11.2011 [14:25:43 +0800], Ryan Wang wrote:
> Hi,
> 
> In kernel source comments, I saw the words:
> ''
> 
> alloc_top is set to the top of RMO, eventually shrink down if the
> <http://lxr.linux.no/linux+*/arch/powerpc/kernel/prom_init.c#L972>TCEs
> overlap
> 
> ''
> 
> I wonder what does RMO mean, and TCE?

RMO = Real Mode Offset -- deprecated in terms of Real Mode Area in PAPR.

TCE = Translation Control Entry

You should be able to find descriptions of both in PAPR.

Thanks,
Nish

-- 
Nishanth Aravamudan <nacc@us.ibm.com>
IBM Linux Technology Center