>>> On 04.01.18 at 21:21, <andrew.coop...@citrix.com> wrote: > Windows is the only OS which pages out kernel datastructures, so chances are > good that this is a vestigial remnant of the PV Windows XP experiment. > Furthermore the implementation is incomplete; it only functions for a present > => not-present transition, rather than a present => read/write transition.
I've thought about this some more. For one, I don't understand the "read/write" part above: descriptor table pages aren't permitted to be writable in the first place. Did you mean "present -> present"? If so, put_page_from_l1e() also gets called when an L1E is being replaced, so it would seem to me that this (sub)case is handled properly. What instead isn't handled is the case where a higher level page table entry mapping the LDT is being replaced. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
