Vitaly Kuznetsov <vkuznets@xxxxxxxxxx> writes: > Some time ago we forbade CPU offlining for Hyper-V and this was sufficient > if you boot with all CPUs onlined. Turns out, people may want to limit the > number online CPUs by passing 'maxcpus=' kernel parameter and we hit a > crash in Hyper-V code in this case. After some thinking, I think we may not > only fix the crash but also make the offlining prevention fine-grained: we > need to prevent from offlining CPUs which have VMBus channels attached > only. All offlined CPUs may always be onlined. > > PATCH1 fixes a bug which is not directly related to the series, I hit it > while testing hv_vmbus module unload with this series. > > Vitaly Kuznetsov (7): > hv: acquire vmbus_connection.channel_mutex in vmbus_free_channels() > hv: allocate synic pages for all present CPUs > hv: init percpu_list in hv_synic_alloc() > hv: change clockevents unbind tactics > hv: check all present cpus in vmbus_wait_for_unload() > hv: switch to cpuhp state machine for synic init/cleanup > hv: make CPU offlining prevention fine-grained K. Y., it seems that for some reason only patches 1 and 4 from this series made it upstream (and to char-misc tree). Could you please resend the rest to Greg? Please let me know if you want me to rebase/retest. Thanks! -- Vitaly _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
