> The reason why we want to do the measuring is we want to use KVM (sounds > crazy > idea) MMU virtualization to speedup the guest -> host memory address > translation. > I talked to some people on LinuxCon Japan, included Paolo, about this idea. > The > feedback I got is we can only use shadow page table rather than EPT/NPT to do > the address translation (if possible!) since different ISA (ARM and x86, for > example) have different page table format. Besides, QEMU has to use ioctl to > ask > KVM to get the translation result, but it's an overkill as the ARM page table > is quite simple, which can be done in user mode very fast.
Anyone would like to give a comment on this? ;) From the talk with Laurent on #qemu, he said the way he thought of is translating GVA -> GPA manually (through software), then try to insert GPA -> HPA into EPT, that's the only way HW can help. Regards, chenwj -- Wei-Ren Chen (陳韋任) Computer Systems Lab, Institute of Information Science, Academia Sinica, Taiwan (R.O.C.) Tel:886-2-2788-3799 #1667 Homepage: http://people.cs.nctu.edu.tw/~chenwj
