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.

Regards,
Anup

Any help would be greatly appreciated! Thank you
Regards
Oscar Jupp

Join tech-privileged@lists.riscv.org to automatically receive all group messages.