Re: [Qemu-devel] [PATCH v13 1/6] tpm: add a "ppi" boolean property

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 12/12/18 11:26 PM, Marc-André Lureau wrote:
> The following patches implement the TPM Physical Presence Interface,
> make use of a new memory region and a fw_cfg entry. Enable PPI by
> default with >=4.0 machine type, to avoid migration issues.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> Reviewed-by: Igor Mammedov <imammedo@redhat.com>

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> ---
>  include/hw/compat.h | 11 ++++++++++-
>  hw/tpm/tpm_crb.c    |  3 +++
>  hw/tpm/tpm_tis.c    |  3 +++
>  3 files changed, 16 insertions(+), 1 deletion(-)
> 
> diff --git a/include/hw/compat.h b/include/hw/compat.h
> index 70958328fe..db368c5c74 100644
> --- a/include/hw/compat.h
> +++ b/include/hw/compat.h
> @@ -2,7 +2,16 @@
>  #define HW_COMPAT_H
>  
>  #define HW_COMPAT_3_1 \
> -    /* empty */
> +    { \
> +        .driver   = "tpm-crb", \
> +        .property = "ppi", \
> +        .value    = "false", \
> +    }, \
> +    { \
> +        .driver   = "tpm-tis", \
> +        .property = "ppi", \
> +        .value    = "false", \
> +    },
>  
>  #define HW_COMPAT_3_0 \
>      /* empty */
> diff --git a/hw/tpm/tpm_crb.c b/hw/tpm/tpm_crb.c
> index a92dd50437..d5b0ac5920 100644
> --- a/hw/tpm/tpm_crb.c
> +++ b/hw/tpm/tpm_crb.c
> @@ -41,6 +41,8 @@ typedef struct CRBState {
>      MemoryRegion cmdmem;
>  
>      size_t be_buffer_size;
> +
> +    bool ppi_enabled;
>  } CRBState;
>  
>  #define CRB(obj) OBJECT_CHECK(CRBState, (obj), TYPE_TPM_CRB)
> @@ -221,6 +223,7 @@ static const VMStateDescription vmstate_tpm_crb = {
>  
>  static Property tpm_crb_properties[] = {
>      DEFINE_PROP_TPMBE("tpmdev", CRBState, tpmbe),
> +    DEFINE_PROP_BOOL("ppi", CRBState, ppi_enabled, true),
>      DEFINE_PROP_END_OF_LIST(),
>  };
>  
> diff --git a/hw/tpm/tpm_tis.c b/hw/tpm/tpm_tis.c
> index d9322692ee..cbb9a84a5b 100644
> --- a/hw/tpm/tpm_tis.c
> +++ b/hw/tpm/tpm_tis.c
> @@ -81,6 +81,8 @@ typedef struct TPMState {
>      TPMVersion be_tpm_version;
>  
>      size_t be_buffer_size;
> +
> +    bool ppi_enabled;
>  } TPMState;
>  
>  #define TPM(obj) OBJECT_CHECK(TPMState, (obj), TYPE_TPM_TIS)
> @@ -950,6 +952,7 @@ static const VMStateDescription vmstate_tpm_tis = {
>  static Property tpm_tis_properties[] = {
>      DEFINE_PROP_UINT32("irq", TPMState, irq_num, TPM_TIS_IRQ),
>      DEFINE_PROP_TPMBE("tpmdev", TPMState, be_driver),
> +    DEFINE_PROP_BOOL("ppi", TPMState, ppi_enabled, true),
>      DEFINE_PROP_END_OF_LIST(),
>  };
>  
>