On Fri, 13 Jul 2007, KAMEZAWA Hiroyuki wrote:

> On Fri, 13 Jul 2007 14:36:08 +0100
> Andy Whitcroft <[EMAIL PROTECTED]> wrote:
> 
> > SPARSEMEM is a pretty nice framework that unifies quite a bit of
> > code over all the arches. It would be great if it could be the
> > default so that we can get rid of various forms of DISCONTIG and
> > other variations on memory maps. So far what has hindered this are
> > the additional lookups that SPARSEMEM introduces for virt_to_page
> > and page_address. This goes so far that the code to do this has to
> > be kept in a separate function and cannot be used inline.
> > 
> Maybe it will be our(my or Goto-san's) work to implement MEMORY_HOTADD support
> for this. Could you add !MEMORY_HOTPLUG in Kconfig ? Then, we'll write
> patch later.
> Or..If you'll add memory hotplug support by yourself, It's great, 

Why would hotadd not work as is?

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