Re: [kvm-unit-tests PATCH v3 00/10] arm/arm64: Add IPI/LPI/vtimer latency test

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On 2020-08-05 12:54, Jingyi Wang wrote:
Hi all,

Currently, kvm-unit-tests only support GICv3 vLPI injection. May I ask
is there any plan or suggestion on constructing irq bypass mechanism
to test vLPI direct injection in kvm-unit-tests?

I'm not sure what you are asking for here. VLPIs are only delivered
from a HW device, and the offloading mechanism isn't visible from
userspace (you either have an enabled GICv4 implementation, or
you don't).

There are ways to *trigger* device MSIs from userspace and inject
them in a guest, but that's only a debug feature, which shouldn't
be enabled on a production system.

        M.
--
Jazz is not dead. It just smells funny...



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