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Virtual Interrupts and usage in ARM V8

techguyz

Hi Experts,

What is the practical usage of the ARM v8 virtual interrupts ?

How it helps in the performance of functionality ?

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  • +1 Arm Employee Badge

    Short answer - virtualization.

    If you are running one or more virtual machines at NS.EL0/1, virtual interrupts are the Hypervisor inserts an interrupt in the virtual machine.  The Hypervisor can do this via the GIC (GICv2 or later), or via the HCR_EL2 register.  Typically the GIC is used.

    I'm not aware of any use outside of virtualization, although they might exist.

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  • +1 Arm Employee Badge

    Short answer - virtualization.

    If you are running one or more virtual machines at NS.EL0/1, virtual interrupts are the Hypervisor inserts an interrupt in the virtual machine.  The Hypervisor can do this via the GIC (GICv2 or later), or via the HCR_EL2 register.  Typically the GIC is used.

    I'm not aware of any use outside of virtualization, although they might exist.

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