Hi Dave, From: Kazuo Moriwaka <moriwaka@xxxxxxxxxxxxx> Subject: Re: dom0cut script updated Date: Wed, 13 Sep 2006 11:34:20 +0900 (JST) > Hi Dave, > > > > Have you abandoned the idea of adding an ELF note (or some other > > > mechanism) for passing the "pfn_to_mfn_frame_list_list" mfn value > > > from the shared, per-domain, "arch_shared_info" structure(s)? > > I talked with our kdump patch managers. They don't want to change > kernel level codes.. I'm sorry for I didn't tell this to you. I'll > talk with them again. pfn_to_mfn_frame_list_list can included into ELF core :) I think you need shared_info.arch.max_pfn, too, don't you? > > Furthermore -- if you could pass the "pfn_to_mfn_frame_list_list" mfn > > values for all existing domains, it would be possible to bring up > > crash sessions for dom0, as well as for any of the domU's -- all > > with a single unmodified vmcore. > > It sounds good. Writing variable length data in ELF core header with kexec-tool is difficult, because ELF core header length should be fixed when kexec loads kdump kernel. It makes multiple domain support difficult by this technique. Using domain_list and idle_pg_table (and follow domain list to find domain) is one solution; but it needs to treat xen hypervisor address space and xen data structures. regards, -- Kazuo Moriwaka <moriwaka@xxxxxxxxxxxxx> -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
