RE: [Xen-devel] Failure to get memory for GATT table, again

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> > You should be able to call ioremap_nocache on the virt_to_bus'ed
> > address you get back from xen_contig_memory.
> 
> Apparently this is where things go wrong; the pages I get 
> from __get_free_pages
> seem to always be a the top of dom0 mem (probably because 
> order is 6), and when
> converted with virt_to_bus I get an mfn which Xen thinks is 
> not owned by dom0.

dma_alloc_coherent should be calling xen_contig_mem which should turn
the pages into ones that are owned by dom0 and contiguous. Add some
dubugging to xen_contig_mem to see if you're getting there.

Ian 


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