[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] can xc_translate_foreign_address() always work for kernel va under x86_64 PV?
Hi, In xc_translate_foreign_address(), the page directory address comes from vcpu's cr3. when the domains is running a user application, the cr3 should contain the app's page table. Under x86_64 PV, kernel and user space are both under ring 3 and protection is implemented via page protection, which means app's page table has no kernel space mappings. So my question is: given a kernel's virtual address, can this function always return a valid mfn? Thanks, Weiming _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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