KVM exit to userspace on WFI

[Jan Henrik Weinstock]

Hi all,

I am looking for a way to have KVM_RUN exit back to userspace once the
vcpu encounters a WFI. It seems the kvm_run->request_interrupt_window
flag is currently ignored by arm64. So my solution thus far is to
patch kvm_handle_wfx in arch/arm64/kvm/handle_exit.c and return to
userspace with KVM_EXIT_IRQ_WINDOW_OPEN - working example attached.
Any chance to get this (or something similar) mainline?

-- 
Dr.-Ing. Jan Henrik Weinstock
Managing Director

MachineWare GmbH | www.machineware.de
Hühnermarkt 19, 52062 Aachen, Germany
Amtsgericht Aachen HRB25734

Geschäftsführung
Lukas Jünger
Dr.-Ing. Jan Henrik Weinstock
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