[Xen-devel] Re: [PATCH RFC 0/4] Paravirtual spinlocks

[Nick Piggin <nickpiggin@xxxxxxxxxxxx>]

On Tuesday 08 July 2008 10:29, Rusty Russell wrote:
> On Tuesday 08 July 2008 05:07:49 Jeremy Fitzhardinge wrote:
> > At the most recent Xen Summit, Thomas Friebel presented a paper
> > ("Preventing Guests from Spinning Around",
> > http://xen.org/files/xensummitboston08/LHP.pdf) investigating the
> > interactions between spinlocks and virtual machines.  Specifically, he
> > looked at what happens when a lock-holding VCPU gets involuntarily
> > preempted.
>
> I find it interesting that gang scheduling the guest was not suggested as
> an obvious solution.
>
> Anyway, concept looks fine; lguest's solution is more elegant of course :)

What's lguest's solution?

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