Re: doubt about ZONE_HIMEM

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On Mon, 9 Apr 2007, Vivek Kutal wrote:

> On Mon, 2007-04-09 at 10:38 +0300, Tzahi Fadida wrote:
> > Hi,
> > Please CMIIW.
> > On 32bit systems:
> > Regarding ZONE_HIMEM which is 128MB virtual memory in size.
> > With kmap you can address using this 128MB of virtual memory
>
> The upper 128MB is not just used for kmap.....that place is reserved for
> vmalloc + kmap + fixed virtual address mapping.
>
> The window to map high memory using kmap is only 2MB.

where exactly is that defined?

rday
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Robert P. J. Day
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