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[Xen-devel] Question on save/restore mfn canonicalization



While exploring the paravirt save/restore code path, I noted a (seemingly) lack of consistency between where/who canonicalizes something and who un-canonicalizes. For example, the guest kernel canonicalizes the store and console mfn's in pre_suspend, but xc_domain_restore uncanonicalizes them before scheduling back the restored guest. The question is if there is a mandatory reason for this, or is just the way the code was written. Can I, e.g, fill the pfn_to_mfn_frame_list(_list) entries from "outside" and remove that code from post_suspend, or will something break?

Thanks!
Andres


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