Re: 2.5.68-mm4

[Anton Blanchard <anton@samba.org>]

Hi,

> . Included the `kexec' patch - load Linux from Linux.  Various people want
>   this for various reasons.  I like the idea of going from a login prompt to
>   "Calibrating delay loop" in 0.5 seconds.

One thing that bothers me about kexec is how we grab low pages in
kimage_alloc_page(). On a partitioned ppc64 box I will need to grab
memory in the low 256MB and the machine might have 500GB of memory
free. Thats going to take some time :)

Id hate to introduce a separate zone just for this sort of stuff (we
currently throw all memory in the DMA zone). Could we add a hint to
the page allocator where it makes a best effort to grab memory below
a threshold?

Anton
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