On 24/09/2015 13:06, Christian Borntraeger wrote: > Am 18.09.2015 um 13:29 schrieb Paolo Bonzini: >> >> >> On 18/09/2015 12:54, Christian Borntraeger wrote: >>>> -/* halt polling only reduces halt latency by 5-7 us, 500us is enough */ >>>> -static unsigned int halt_poll_ns = 500000; >>>> +/* Architectures should define their poll value according to the halt latency */ >>>> +static unsigned int halt_poll_ns = KVM_HALT_POLL_NS_DEFAULT; >>> >>> Yes, I prefer this over disabling it via Kconfig. There are benchmarks which >>> benefit from polling on s390. Furthermore it seems that the latency >>> strongly depends on timing of the architecture so making it per arch is >>> probably the right thing to do. >> >> Perhaps a #ifndef is better than replicating the 500us default in all >> architectures? Or should the default be 0? > > Any guidance from your side? All different proposals are certainly ok. > Are you going to take Davids patch or shall he respin? I've committed the patch as is, and I'm preparing a pull request. Paolo -- 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
