陳韋任 (Wei-Ren Chen) writes: >> 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. Sorry, but I don't see the benefit here. Lluis -- "And it's much the same thing with knowledge, for whenever you learn something new, the whole world becomes that much richer." -- The Princess of Pure Reason, as told by Norton Juster in The Phantom Tollbooth
