Hello, all An interesting (at least to me) thinking came up to me when I found that the lguest was removed. But I don't have enough knowledge to find out the answer nor energy to implement it in some time. Is it possible to implement kvm-pv which allows kvm to run on the boxes without hardware virtualization support, so that qemu/kvm can be used on clouds such as aws, azure? Without hardware virtualization support, the host kvm-pv module and the guest linux kernel need to cooperate in some ways. And some kvm facilities can help. For instance, the existing shadow-paging, which was not introduced when lguest had been added to kernel, could be reused to help on mmu virtualization. For guest kernel/userspace separation in x86_64, the intel cpu's segment registers can help too. (or use a new set of page-table for the guest kernel on amd64). The thought is quite shallow, but I hope this email brings some inspirations rather than annoyance. And I'm sorry if the later things would happen. Thanks, Lai. On Thu, Aug 17, 2017 at 1:31 AM, Juergen Gross <jgross@xxxxxxxx> wrote: > Lguest seems to be rather unused these days. It has seen only patches > ensuring it still builds the last two years and its official state is > "Odd Fixes". > > Nuke it in order to be able to clean up the paravirt code.
