Re: [Xen-ia64-devel] [PATCH 4/9] [P2M/VP step 1] xen: domain0 builder change

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

Hi Tristan. Thank you for your comment.

On Tue, Apr 25, 2006 at 05:25:10PM +0200, Tristan Gingold wrote:
> Le Mardi 25 Avril 2006 06:12, Isaku Yamahata a écrit :
> >  4 / 9
> Two possible problems (we may fix them later):
> * should ACPI be copied instead of mapped ?
>   At least some ACPI tables must be duplicated to other IO domains.

I agree with you that customized ACPI tables is needed for IO domains.
However I prefer read-only mapping of these pages to domain for domain0

I haven't implemented read-only grant page mapping yet.
(I plan to do it after the mergeing effort)
Once it is implemented, it can be used for read only mapping of
ACPI-related pages.


> * We must be sure that only physical memory < 4GB is mapped below 4 GB in 
> domains.  This seems to be already handled in xen/x86, but we must be sure it 
> is also handled in xen/ia64.

Does alloc_domheap_page() handles it?
#define alloc_domheap_page(d) (alloc_domheap_pages(d,0,0))
It passes flags = 0.
Or do you mention about other things?

-- 
yamahata

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