Re: [Lhms-devel] Re: Merging Nonlinear and Numa style memory hotplug

Dave Hansen
2004-06-25T20:51:58Z

On Fri, 2004-06-25 at 13:45, Yasunori Goto wrote:
> > > Are you sure that all architectures need phys_section?
> >
> > You don't *need* it, but the alternative is a scan of the mem_section[]
> > array, which would be much, much slower.
> >
> > Do you have an idea for an alternate implementation?
>
> I didn't find that scan of the mem_section[] is necessary.
> I thought just that mem_section index = phys_section index.
> May I ask why scan of mem_section is necessary?
> I might still have misunderstood something.

For now, the indexes happen to be the same. However, for discontiguous
memory systems, this will not be the case

mem | phys
----+-----
|
|
|
|

-- Dave