Re: [Qemu-devel] [PATCH] target/arm/kvm: gic: Prevent creating userspace GICv3 with KVM

[Peter Maydell]

On 1 February 2018 at 20:53, Christoffer Dall
<address@hidden> wrote:
> 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: Christoffer Dall <address@hidden>
> ---
>  target/arm/kvm_arm.h | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/target/arm/kvm_arm.h b/target/arm/kvm_arm.h
> index ff53e9fafb..cfb7e5af72 100644
> --- a/target/arm/kvm_arm.h
> +++ b/target/arm/kvm_arm.h
> @@ -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";
>      }



Applied to target-arm.next, thanks.

-- PMM