Re: Question about guest external interrupt

Anup Patel

On Thu, Nov 17, 2022 at 9:07 AM Oscar Jupp <jupposcar@...> wrote:

To whom it may concern,
I have a question about guest external interrupt.
The privileged ISA said: "GEILEN may be zero". If GEILEN is zero, is the implementation unable to receive guest external interrupts at all? Or can it be injected by software means?
If GEILEN is zero then there are no guest external interrupts but
software (i.e. hypervisor) can still inject external interrupts using
hvip CSR. In other words, software-injected external interrupts are
always available to a hypervisor using H-extension.


Any help would be greatly appreciated! Thank you
Oscar Jupp

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