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    SubjectRe: [Qemu-devel] [RFC] Next gen kvm api
    On 02/07/2012 06:29 PM, Jan Kiszka wrote:
    > >>>
    > >>
    > >> Isn't there another level in between just scheduling and full syscall
    > >> return if the user return notifier has some real work to do?
    > >
    > > Depends on whether you're scheduling a kthread or a userspace process, no? If
    >
    > Kthreads can't return, of course. User space threads /may/ do so. And
    > then there needs to be a differences between host and guest in the
    > tracked MSRs.

    Right. Until we randomize kernel virtual addresses (what happened to
    that?) and then there will always be a difference, even if you run the
    same kernel in the host and guest.

    > I think to recall it's a question of another few hundred
    > cycles.

    Right.

    --
    error compiling committee.c: too many arguments to function



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