[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [Xen-devel] direct_remap_area_pages() does not work for multiple pages?



 
> In DomU, I used alloc_pages() to allocate contiguous memory pages,
> are they machine contiguous? If not, what's the right way to allocate
> machine contiguous pages? or what's the right way to map 
> multiple pages
> into Dom0?

alloc_pages does not guarantee to return machine contiguous pages. As a
hack, you could use dma_alloc_coherent. The correct approach is to find
out all the mfns that are in use and do multiple direct_remap_area calls
as appropriate. In user space, things are rather nicer as you can use
the xc_map_foreign_batch.

Ian


-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.
http://ads.osdn.com/?ad_ide95&alloc_id396&op=click
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.