Re: missing doorbell interrupt when onlining cpu

2019-09-10 Thread Nathan Lynch
Nathan Lynch writes: > Nathan Lynch writes: > >> I'm hoping for some help investigating a behavior I see when doing cpu >> hotplug under load on P9 and P8 LPARs. Occasionally, while coming online >> a cpu will seem to get "stuck" in idle, with a pending doorbell >> interrupt unserviced (cpu 12 h

Re: missing doorbell interrupt when onlining cpu

2019-09-04 Thread Nathan Lynch
Nathan Lynch writes: > I'm hoping for some help investigating a behavior I see when doing cpu > hotplug under load on P9 and P8 LPARs. Occasionally, while coming online > a cpu will seem to get "stuck" in idle, with a pending doorbell > interrupt unserviced (cpu 12 here): > > cpuhp/12-70[012]

missing doorbell interrupt when onlining cpu

2019-09-04 Thread Nathan Lynch
I'm hoping for some help investigating a behavior I see when doing cpu hotplug under load on P9 and P8 LPARs. Occasionally, while coming online a cpu will seem to get "stuck" in idle, with a pending doorbell interrupt unserviced (cpu 12 here): cpuhp/12-70[012] 46133.602202: cpuhp_enter: