Re: [PATCH] x86: introduce max_low_pfn_mapped for 64bit

[Ingo Molnar]

* Yinghai Lu <yhlu.kernel@xxxxxxxxx> wrote:

> On Fri, Jul 11, 2008 at 1:26 AM, Ingo Molnar <mingo@xxxxxxx> wrote:
> >
> > * Yinghai Lu <yhlu.kernel@xxxxxxxxx> wrote:
> >
> >> when 4g more memory installed, don't map big hole below 4g.
> >
> > applied to tip/x86/core, thanks Yinghai.
> >
> > This is a scarier change - no way to do it in smaller steps?
> 
> 1. e820_end ==> e820_end_of_ram_pfn :: totally safe...
> 2. others

yeah. I'd also split out the introduction of max_low_pfn_mapped into a 
separate, safe patch as well. I.e. first patch just introduces it, 
second patch makes use of it.

the #ifdef 64-bit assymetry looks a bit ugly too.

	Ingo
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