Messages in this thread | | | Date | Fri, 26 Apr 2019 07:57:48 +0200 | From | Ingo Molnar <> | Subject | Re: [RFC PATCH v5 3/4] x86/acrn: Use HYPERVISOR_CALLBACK_VECTOR for ACRN guest upcall vector |
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* Zhao, Yakui <yakui.zhao@intel.com> wrote:
> > > > Does the hypervisor model the APIC EOI command, i.e. does it require the > > > > APIC to be acked? I.e. would not acking the APIC create an IRQ storm? > > > > > > The hypervisor requires that the APIC EOI should be acked. If the EOI APIC > > > is not acked, the APIC ISR bit for the HYPERVISOR_CALLBACK_VECTOR will not > > > be cleared and then it will block the interrupt whose vector is lower than > > > HYPERVISOR_CALLBACK_VECTOR. > > > > Ok! > > > > I will add some comments for calling entering_ack_irq in > acrn_hv_callback_handler. Is this ok to you?
Yeah, thanks!
Ingo
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