Re: [PATCH -v7][RFC]: mutex: implement adaptive spinning

[Peter Zijlstra]

On Thu, 2009-01-08 at 11:13 -0800, Linus Torvalds wrote:
> 
> Well, at least we do unless you enable that broken paravirt support. I'm 
> not at all clear on why CONFIG_PARAVIRT wants to use inferior locks, but I 
> don't much care.

Because the virtual cpu that has the ticket might not get scheduled for
a while, even though another vcpu with a spinner is scheduled.

The whole (para)virt is a nightmare in that respect.
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