Re: New heap API and scrubbing

[Keir Fraser <keir.fraser@eu.citrix.com>]

They allocate from the same pool of pages, but they differ very slightly. If
you alloc_fooheap_pages() you must free_fooheap_pages(). You could probably
make the distinction based on is_xenheap_page() if you wanted.

 -- Keir

On 10/02/2009 00:24, "Dan Magenheimer" <dan.magenheimer@oracle.com> wrote:

> So in the new (soon-to-be 3.4) heap API, are
> 
> alloc_domheap_pages(NULL,order,flags)
> 
> and
> 
> alloc_xenheap_pages(order,flags)
> 
> synonomous on 64-bit hypervisors?  I.e. they
> are allocating from the same pool of pages?
> And if so are the matching free routines
> synonomous?
> 
> If not, under what circumstances should one be
> used rather than the other?
> 
> Are there any cases now where free_XXXheap_pages
> might free up pages that could be grabbed by
> another domain and those pages have not been
> scrubbed?
> 
> Thanks,
> Dan
> 
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