Xen devel - Jun 2006 - what''s the difference between balloon_alloc_empty_page_range() and alloc_pages()

Hi,

I am writing a xen-based driver. At the backend, I used
balloon_alloc_empty_page_range() to allocate multiple pages and maped some
pages from the frontend. But when I wrote into the page allocated with
balloon_alloc_empty_page_range(), I got memory error. However, after I
changed balloon_alloc_empty_page_range() to alloc_pages(). It works for me.

What''s the difference between balloon_alloc_empty_page_range() and
alloc_pages()? Lookslike balloon_alloc_empty_page_range() allocates pages at
low memory, right? Is this the only difference?

Thanks,

lily


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