Re: [PATCH v5 1/2] sysemu: tpm: Add a stub function for TPM_IS_CRB

[Stefan Berger]

On 5/6/22 09:25, Eric Auger wrote:
> In a subsequent patch, VFIO will need to recognize if
> a memory region owner is a TPM CRB device. Hence VFIO
> needs to use TPM_IS_CRB() even if CONFIG_TPM is unset. So
> let's add a stub function.
>
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> Suggested-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linnux.ibm.com>

> ---
>   include/sysemu/tpm.h | 6 ++++++
>   1 file changed, 6 insertions(+)
>
> diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h
> index 68b2206463c..fb40e30ff60 100644
> --- a/include/sysemu/tpm.h
> +++ b/include/sysemu/tpm.h
> @@ -80,6 +80,12 @@ static inline TPMVersion tpm_get_version(TPMIf *ti)
>   #define tpm_init()  (0)
>   #define tpm_cleanup()
>
> +/* needed for an alignment check in non-tpm code */
> +static inline Object *TPM_IS_CRB(Object *obj)
> +{
> +     return NULL;
> +}
> +
>   #endif /* CONFIG_TPM */
>
>   #endif /* QEMU_TPM_H */