Hi, >On Tue, Jul 31, 2007 at 10:43:44PM -0600, Alex Williamson wrote: >> > + /* maximum available memory for dom0 */ >> > + max_dom0_pages = avail_domheap_pages() - >> > + min(avail_domheap_pages() / >> > + 16UL, 512UL << (20 - PAGE_SHIFT)) ; >> >> I assume this heuristic came from Akio's patch in the thread you >> referenced; can anyone explain how this was derived and why it's >> necessary? It looks like a fairly random fudge factor. Thanks, > >I guess it comes from compute_dom0_nr_pages() under arch/x86. >However I don't know why compute_dom0_nr_pages() is so. >Anyway It should be different for ia64. While I'm guessing the most >dominant factor is the p2m table, domain0 building process should >be revised for the correct estimation. Yes, Isaku's guess is right. I use the same logic as x86.
>BTW alloc_dom0_size() may be confusing because it doesn't allocate anymore. >How about calc_dom0_size()? >This isn't essential. very minor issue. Just for my preference. I agree. Best Regards, Akio Takebe _______________________________________________ Xen-ia64-devel mailing list Xen-ia64-devel@lists.xensource.com http://lists.xensource.com/xen-ia64-devel
