Re: [PATCH v2] x86/hotplug: Silence APIC only after all irq's are migrated

2020-08-25 Thread Raj, Ashok
Hi Thomas, On Wed, Aug 26, 2020 at 02:40:45AM +0200, Thomas Gleixner wrote: > Ashok, > > On Thu, Aug 20 2020 at 17:42, Ashok Raj wrote: > > When offlining CPUs, fixup_irqs() migrates all interrupts away from the > > outgoing CPU to an online CPU. It's always possible the device sent an > >

Re: [PATCH v2] x86/hotplug: Silence APIC only after all irq's are migrated

2020-08-25 Thread Thomas Gleixner
Ashok, On Thu, Aug 20 2020 at 17:42, Ashok Raj wrote: > When offlining CPUs, fixup_irqs() migrates all interrupts away from the > outgoing CPU to an online CPU. It's always possible the device sent an > interrupt to the previous CPU destination. Pending interrupt bit in IRR in > LAPIC identifies

Re: [PATCH v2] x86/hotplug: Silence APIC only after all irq's are migrated

2020-08-23 Thread Raj, Ashok
Hi Thomas, I was wondering if you got a chance to take a look at this fix? I had some mail issues recently and they showed up at lore after 2 days. I wasn't sure if you got the original mail, or maybe it didn't make it. If you had a different way to fix it, we can try those out. On Thu, Aug

Re: [PATCH v2] x86/hotplug: Silence APIC only after all irq's are migrated

2020-08-20 Thread Randy Dunlap
On 8/20/20 5:42 PM, Ashok Raj wrote: > When offlining CPUs, fixup_irqs() migrates all interrupts away from the > outgoing CPU to an online CPU. It's always possible the device sent an > interrupt to the previous CPU destination. Pending interrupt bit in IRR in > LAPIC identifies such interrupts.