Messages in this thread | | | Subject | Re: [PATCH -v7][RFC]: mutex: implement adaptive spinning | From | Peter Zijlstra <> | Date | Thu, 08 Jan 2009 20:23:29 +0100 |
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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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