Re: [PATCH 7 of 13] Make __FIXADDR_TOP variable to allow it to makespace for a hypervisor

From: Andrew Morton
Date: Tue Aug 01 2006 - 10:33:16 EST


On Tue, 1 Aug 2006 02:03:30 -0700
Chris Wright <chrisw@xxxxxxxxxxxx> wrote:

> * Jeremy Fitzhardinge (jeremy@xxxxxxxxxxxxx) wrote:
> > -#define MAXMEM (-__PAGE_OFFSET-__VMALLOC_RESERVE)
> > +#define MAXMEM (__FIXADDR_TOP-__PAGE_OFFSET-__VMALLOC_RESERVE)
>
> In the native case we lose one page of lowmem now.

erm, isn't this the hunk which gave one of my machines a 4kb highmem zone?
I have memories of reverting it.
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