Commit bd559478 authored by Christoffer Dall's avatar Christoffer Dall Committed by Peter Maydell
Browse files

target/arm/kvm: gic: Prevent creating userspace GICv3 with KVM 



KVM doesn't support emulating a GICv3 in userspace, only GICv2.  We
currently attempt this anyway, and as a result a KVM guest doesn't
receive interrupts and the user is left wondering why.  Report an error
to the user if this particular combination is requested.

Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: default avatarPhilippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180201205307.30343-1-christoffer.dall@linaro.org
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent 1db5e96c

target/arm/kvm_arm.h

+4 −0
Original line number Diff line number Diff line
@@ -234,6 +234,10 @@ static inline const char *gicv3_class_name(void) 
        exit(1);

#endif

    } else {

        if (kvm_enabled()) {

            error_report("Userspace GICv3 is not supported with KVM");

            exit(1);

        }

        return "arm-gicv3";

    }

}