Re: [Xen-devel] Re: [patch 14/21] Xen-paravirt: Add XEN config optionsand disable unsupported config options.

[Zachary Amsden]

Keir Fraser wrote:
> On 16/2/07 10:19, "Zachary Amsden" <zach@xxxxxxxxxx> wrote:
>
>   
> > Doesn't stop_machine_run already take care of getting you out of all
> > kernel threads?  So you can only be sleeping, not preempted, in which
> > case, this might not be an issue?
> >     
>
> It ensures that no (non-stopmachine) threads are running on any of the other
> CPUs, but it doesn't guarantee that all threads are at any form of quiescent
> point. They can certainly have private references to machine addresses.
>
> Otherwise, what would be the point of the process freezer? :-)
>   

Yeah, I was over-hoping on that one.  At least thought it was worth 
suggesting as a starting point.  I had similar issues considering 
loading VMI as a module at runtime.

Zach
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/