Hi Paolo and Radim, Intel sdm vol3 ch-25.1.3 (p-1074) said: The “PAUSE-loop exiting” VM-execution control is ignored if CPL > 0. Does this means that only guest's kernelspace spinlock could causes VMexit due to "pause-loop exiting" ? If so, I think the kvm_vcpu_on_spin should selects a (currently not running)vcpu which cpl=0 to boost, because the cpl>0 vcpus are not the lock-holder. (suppose the guest isn't RT-linux) What about your opinion ? -- Regards, Longpeng(Mike) -- 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
