Anthony Liguori wrote: > This patch allows VMA's that contain no backing page to be used for guest > memory. This is a drop-in replacement for Ben-Ami's first page in his direct > mmio series. Here, we continue to allow mmio pages to be represented in the > rmap. > >
I like this very much, as it only affects accessors and not the mmu core itself. Hollis/Xiantao/Carsten, can you confirm that this approach works for you? Carsten, I believe you don't have mmio, but at least this shouldn't interfere. > > struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn) > { > - return pfn_to_page(gfn_to_pfn(kvm, gfn)); > + pfn_t pfn; > + > + pfn = gfn_to_pfn(kvm, gfn); > + if (pfn_valid(pfn)) > + return pfn_to_page(pfn); > + > + return NULL; > } > You're returning NULL here, not bad_page. -- Any sufficiently difficult bug is indistinguishable from a feature. ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel