>>> On 19.10.17 at 18:21, <julien.gr...@linaro.org> wrote: > Looking a bit more at the resource you can acquire from this hypercall. > Some of them are allocated using alloc_xenheap_page() so not assigned to > a domain. > > So I am not sure how you can expect a function set_foreign_p2m_entry to > take reference in that case.
Hmm, with the domain parameter added, DOMID_XEN there (for Xen heap pages) could identify no references to be taken, if that was really the intended behavior in that case. However, even for Xen heap pages life time tracking ought to be done - it is for a reason that share_xen_page_with_guest() assigns the target domain as the owner of such pages, as that allows get_page() to succeed for them. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
