Re: CONFIG_ACPI_HOTPLUG_MEMORY=m with x86_64 devel tree II

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On 30 Mar 2006 15:41:33 +0200
Andi Kleen <ak@xxxxxx> wrote:

> 
> Hi,
> 
> I started to implement your suggestion now.
> 
> But one problem I noticed and I don't see how the current sparsemem code
> handles correctly is that it makes no attempt to handle hotadd
> areas that cross zone boundaries. Is there code somewhere that rejects
> them?
> 

add_memory() selects a zone which pages are added, before adding memory regardless
of its address. Now this is hard-coded.

ia64 adds memory to NORMAL.
i386 adds memory to HIGHMEM.
x86_64 adds memory to NORMAL.

if x86_64 people wants to add memory to DMA32 or some other zone, please add code.


- Kame

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