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xen-devel
[Xen-devel] Re: DOMID_XEN and iomem_access_permitted
Keir Fraser wrote:
Unprivileged domains will be unable to obtain a reference to dom_xen. So
this bug can only trigger from dom0.
OK -- and DOMID_IO redirects the checks back to current->domain before
calling iomem_access_permitted() in get_page_from_l1e(). So we don't
believe a domU should be able to pass a "dummy domain" to
iomem_access_permitted(). Good to know. :-)
-George
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