[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] why we need to convert "mfn_to_page(smfn)" in page_alloc.c?
On 10/12/12 14:02, asad raza wrote: Becasue "init_heap_pages" takes struct page_info, rather than a page number?void init_domheap_pages(paddr_t ps, paddr_t pe) { unsigned long smfn, emfn; ASSERT(!in_irq()); smfn = round_pgup(ps) >> PAGE_SHIFT; emfn = round_pgdown(pe) >> PAGE_SHIFT; init_heap_pages(mfn_to_page(smfn), emfn - smfn); } The init_heap_pages does convert the start page to a mfn, but not all callers of init_heap_pages has a mfn in the first place, so I gues it's just "we have to do this anyways. -- Mats _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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