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Re: [PATCH] added Loongson cpu-feature-overrides.h

To: Ralf Baechle <ralf@linux-mips.org>
Subject: Re: [PATCH] added Loongson cpu-feature-overrides.h
From: Zhang Le <r0bertz@gentoo.org>
Date: Thu, 2 Apr 2009 20:15:56 +0800
Cc: linux-mips@linux-mips.org
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On 13:47 Thu 02 Apr     , Ralf Baechle wrote:
> On Thu, Apr 02, 2009 at 07:27:39PM +0800, Zhang Le wrote:
> 
> > > > I have taken Wu Zhangjin's and Philippe Vachon's version as references, 
> > > > did a
> > > > little modification and tested on 16K page size kernel. It works well.
> > > > 
> > > > Unfornately although it already has defined cpu_has_dc_aliases as 1, 4k 
> > > > page
> > > > size still not working. More work needed here.
> > > 
> > > Adding this file is only a matter of kernel optimization.  You may have
> > > saved as much as several hundred kb!  But it won't get a kernel
> > > that wasn't working before to work.  If anything the opposite ...
> > 
> > I see. Thanks.
> > BTW, I have just made another little change:
> > 
> > #define cpu_has_dc_aliases      (PAGE_SIZE < 0x4000)
> > 
> > Since waysize is 16k.
> > 
> > Anyway, it is good to include this file now, or postpone it a little later?
> > If yes, then I will send a new version soon.
> 
> Correct - but this alone doesn't get all 4k or 64k pages to work so how
> about we deal with this one later?

OK, then, ;)

Zhang, Le

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