Hi Andi

Checking Christoph quicklist implementation, I found the same cache miss in 
free() than SLAB has.

/* common implementation *
int virt_to_nid(const void *addr)
{
        struct page *page = virt_to_page(addr); 
        return page_to_nid(page);
}

On some platforms (x86_64 for example), could we have a better implementation, 
not accessing struct page, but using phys_to_nid() ?

Thank you
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