Re: [Xen-ia64-devel] [patch] calculate dom0 metaphysical load address correctly

[Jes Sorensen <jes@xxxxxxx>]

Isaku Yamahata wrote:
> On Thu, May 24, 2007 at 10:34:22AM +0200, Jes Sorensen wrote:
>> dom0 needs the metaphysical addresses or nothing can work as we use the
>> node info for talking to the PCI controllers, memory controllers (IPIs
>> and TLB flushes) etc.
> 
> I don't understand why 'must match' here.
> dom0 can convert psudo(meta) phsyical address into 
> machine physical address, then it can get node id.

It can, but if I take that approach, I am going to have to rewrite a
significant part of dom0, it's not realistic to do so. It would affect
memory management, PCI & IO code etc etc. In addition we want this
feature when we want to support multiple dom0's in the future.

Cheers,
Jes


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