[Xen-devel] why we need to convert "mfn_to_page(smfn)" in page_alloc.c?

[asad raza <asadrupucit2006@xxxxxxxxx>]

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);
}

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