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Re: [Qemu-devel] [RFC] Next gen kvm api
From: |
Avi Kivity |
Subject: |
Re: [Qemu-devel] [RFC] Next gen kvm api |
Date: |
Wed, 15 Feb 2012 15:41:40 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:9.0) Gecko/20111222 Thunderbird/9.0 |
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
- Re: [Qemu-devel] [RFC] Next gen kvm api, (continued)
- Re: [Qemu-devel] [RFC] Next gen kvm api, Rob Earhart, 2012/02/03
- Re: [Qemu-devel] [RFC] Next gen kvm api, Avi Kivity, 2012/02/05
- Re: [Qemu-devel] [RFC] Next gen kvm api, Rob Earhart, 2012/02/06
- Re: [Qemu-devel] [RFC] Next gen kvm api, Anthony Liguori, 2012/02/06
- Re: [Qemu-devel] [RFC] Next gen kvm api, Avi Kivity, 2012/02/07
- Re: [Qemu-devel] [RFC] Next gen kvm api, Anthony Liguori, 2012/02/07
- Re: [Qemu-devel] [RFC] Next gen kvm api, Avi Kivity, 2012/02/07
- Re: [Qemu-devel] [RFC] Next gen kvm api, Jan Kiszka, 2012/02/07
- Re: [Qemu-devel] [RFC] Next gen kvm api, Anthony Liguori, 2012/02/07
- Re: [Qemu-devel] [RFC] Next gen kvm api, Jan Kiszka, 2012/02/07
- Re: [Qemu-devel] [RFC] Next gen kvm api,
Avi Kivity <=
- Re: [Qemu-devel] [RFC] Next gen kvm api, Anthony Liguori, 2012/02/07
- Re: [Qemu-devel] [RFC] Next gen kvm api, Avi Kivity, 2012/02/15
- Re: [Qemu-devel] [RFC] Next gen kvm api, Avi Kivity, 2012/02/07
Re: [Qemu-devel] [RFC] Next gen kvm api, Gleb Natapov, 2012/02/05
Re: [Qemu-devel] [RFC] Next gen kvm api, Anthony Liguori, 2012/02/05