Re: [PATCH RFC 0/4] Paravirtual spinlocks

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 :)

A little disappointing that you can't patch your version inline.

Cheers,
Rusty.