>>> On 13.12.17 at 18:03, <paul.durr...@citrix.com> wrote: > Looking through the code, the only one thing that bothers me is the > page_set_owner() done in shadow_enable() for the page used for HVM guest > vcpus that have paging disabled. AFAICT that page would become mappable by an > emulating domain with MMU_PT_UPDATE_NO_TRANSLATE, if it figured out or > guessed the correct MFN, but I'm not sure whether damage could be done to Xen > using that.
I was afraid of a problem here too, but Tim did convince me that there's no problem as this is a page table being shadowed, not a page table the guest actually runs on. Corrupting the page's contents would only affect the guest (just like is the case for any other guest page tables). Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel