On Tue, Apr 01, 2008 at 10:22:51PM +0300, Avi Kivity wrote: > It's just something we discussed, not code.
Yes, the pfn_valid check should skip all refcounting for mmio regions without a struct page. But gfn_to_page can't work without a struct page, so some change will be needed there. With the reserved ram patch I didn't need to touch the gfn_to_page interface because the memmap happens to exist despite the ram is reserved in the e820 map, so I used !page_count() instead of the previously discussed !pfn_valid to skip all refcounting (reserved ram must skip the refcounting too because those ram pages can't be freed as they're not-ram as far as linux is concerned). ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
