Re: 2.5.68-mm4

Andrew Morton
2003-05-02T21:12:32Z

Anton Blanchard <anton@samba.org> wrote:
>
>
> 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?
>

Eric may be able to suggest something.