On Wed, Oct 28, 2009 at 11:32:00AM +0200, Avi Kivity wrote: > On 10/27/2009 07:50 PM, Michael S. Tsirkin wrote: >> Can the value of irqchip_in_kernel be changed by userspace >> after we have checked it? If yes, this check won't help ... >> > > A change from false to true is possible, but not the reverse. Hmm. If we want to rely on this, we have to play with memory barriers to write/read it. Doable, but hard to get right. Can we always have the irqchip object exist? It doesn't use a lot of memory, does it? Maybe have it inline, save an extra indirection on fastpath ... > -- > error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
