lkml.org 
[lkml]   [2012]   [Feb]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
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



\
 
 \ /
  Last update: 2012-02-15 14:45    [from the cache]
©2003-2011 Jasper Spaans