Re: [Xen-devel] altering domain memory limit

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

No, you should be able to install zeroed page tables anywhere beneath
HYPERVISOR_VIRT_START. The page table must be read only, of course.

 -- Keir

> 
> My VM expertise has hit its limit.  I'm trying to change
> pagetable_init() in linux-2.4.26-xenU/arch/xen/mm/init.c
> to make room for future allocations of new pages from xen. 
> The domain dies as soon as it tries to do this set_pmd()
>       set_pmd(pmd, __pmd(_KERNPG_TABLE + __pa(pte_base)));
> for any space beyond start_info.nr_pages
> 
> The values of pte_base and pmd line up with the values for all the other
> ptes, and fall within the "Page tables" region of the domain memory
> arrangement.
> 
> Does domain creation somehow freeze the page table size for a domain?
> 
> 
> 
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