6 messages, 3 authors, 2011-11-03 · open the first message on its own page
From: Ryan Wang <hidden>
Date: 2011-11-01 06:25:45
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? thanks,
From: Nishanth Aravamudan <hidden>
Date: 2011-11-01 17:33:24
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 [off-list ref] IBM Linux Technology Center
From: Ryan Wang <hidden>
Date: 2011-11-02 11:17:25
2011/11/2 Nishanth Aravamudan [off-list ref]
Hi Ryan, On 01.11.2011 [14:25:43 +0800], Ryan Wang wrote:quoted
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! But I searched <Power.orgTM Standard for Embedded Power ArchitectureTM Platform Requirements> and failed to found the concept RMO or Real Mode Offset. Will you please give me some hints to the docs？Thanks,
Thanks, Nish -- Nishanth Aravamudan [off-list ref] IBM Linux Technology Center
From: Nishanth Aravamudan <hidden>
Date: 2011-11-02 18:31:38
On 02.11.2011 [19:17:20 +0800], Ryan Wang wrote:
2011/11/2 Nishanth Aravamudan [off-list ref]quoted
Hi Ryan, On 01.11.2011 [14:25:43 +0800], Ryan Wang wrote:quoted
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! But I searched <Power.orgTM Standard for Embedded Power ArchitectureTM Platform Requirements> and failed to found the concept RMO or Real Mode Offset. Will you please give me some hints to the docs??Thanks,
Section 14.1.1 Real Mode Accesses in PAPR 2.4 Thanks, Nish -- Nishanth Aravamudan [off-list ref] IBM Linux Technology Center
From: Scott Wood <hidden>
Date: 2011-11-02 19:20:10
On 11/02/2011 06:17 AM, Ryan Wang wrote:
=20
=20
2011/11/2 Nishanth Aravamudan <nacc@us.ibm.com <mailto:nacc@us.ibm.com>=
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Hi Ryan,
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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
<http://lxr.linux.no/linux+*/arch/powerpc/kernel/prom_init.c#L972>>=TCEs
> overlap
>
> ''
>
> I wonder what does RMO mean, and TCE?
=20
RMO =3D Real Mode Offset -- deprecated in terms of Real Mode Area i=n PAPR.
=20
TCE =3D Translation Control Entry
=20
You should be able to find descriptions of both in PAPR.
=20
=20
Thanks Nish!
=20
But I searched <Power.orgTM Standard for Embedded Power ArchitectureTM
Platform Requirements> and failed to found the concept RMO or Real Mode
Offset.
=20
Will you please give me some hints to the docs=EF=BC=9FThanks,ePAPR and PAPR are not the same thing. It looks like PAPR is only available to power.org members. -Scott
From: Ryan Wang <hidden>
Date: 2011-11-03 01:05:23
2011/11/3 Scott Wood [off-list ref]
On 11/02/2011 06:17 AM, Ryan Wang wrote:quoted
2011/11/2 Nishanth Aravamudan <nacc@us.ibm.com <mailto:nacc@us.ibm.com>> 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 <http://lxr.linux.no/linux+*/arch/powerpc/kernel/prom_init.c#L972quoted
TCEs> overlap > > '' > > I wonder what does RMO mean, and TCE? RMO = Real Mode Offset -- deprecated in terms of Real Mode Area inPAPR.quoted
TCE = Translation Control Entry You should be able to find descriptions of both in PAPR. Thanks Nish! But I searched <Power.orgTM Standard for Embedded Power ArchitectureTM Platform Requirements> and failed to found the concept RMO or Real Mode Offset. Will you please give me some hints to the docs？Thanks,ePAPR and PAPR are not the same thing. It looks like PAPR is only available to power.org members.
Got it. Thanks, Nish.
-Scott