Re: [Qemu-devel] [RFC PATCH 1/5] ppc64: Express dependencies of 'pseries' and 'powernv' machines with kconfig

["Cédric Le Goater" <clg@kaod.org>]

On 1/30/19 10:43 AM, Thomas Huth wrote:
> The POWERNV switch should always select ISA_IPMI_BT, then the other
> IPMI options are turned on automatically now.
> CONFIG_DIMM should always be selected by the pseries machine,
> which in turn depends on CONFIG_MEM_DEVICE since DIMM implements
> this interface.
> CONFIG_VIRTIO_VGA can be dropped from default-configs/ppc64-softmmu.mak
> completely since this device is already automatically enabled via
> hw/display/Kconfig now.
> CONFIG_SPAPR_RNG should stay in the ppc-softmmu.mak file since this
> is a completely optional device.
> 
> Cc: Cédric Le Goater <clg@kaod.org>
> Signed-off-by: Thomas Huth <thuth@redhat.com>
> ---
>  default-configs/ppc64-softmmu.mak | 7 -------
>  hw/intc/Kconfig                   | 4 +---
>  hw/mem/Kconfig                    | 1 +
>  hw/ppc/Kconfig                    | 9 +++++++++
>  4 files changed, 11 insertions(+), 10 deletions(-)
> 
> diff --git a/default-configs/ppc64-softmmu.mak b/default-configs/ppc64-softmmu.mak
> index a0a9151..6f8d7ea 100644
> --- a/default-configs/ppc64-softmmu.mak
> +++ b/default-configs/ppc64-softmmu.mak
> @@ -5,14 +5,7 @@ include ppc-softmmu.mak
>  
>  # For PowerNV
>  CONFIG_POWERNV=y
> -CONFIG_IPMI=y
> -CONFIG_IPMI_LOCAL=y
> -CONFIG_IPMI_EXTERN=y
> -CONFIG_ISA_IPMI_BT=y
>  
>  # For pSeries
>  CONFIG_PSERIES=y
> -CONFIG_VIRTIO_VGA=y
> -CONFIG_MEM_DEVICE=y
> -CONFIG_DIMM=y
>  CONFIG_SPAPR_RNG=y
> diff --git a/hw/intc/Kconfig b/hw/intc/Kconfig
> index 6eea14e..1e819d0 100644
> --- a/hw/intc/Kconfig
> +++ b/hw/intc/Kconfig
> @@ -31,13 +31,11 @@ config OPENPIC_KVM
>  
>  config XICS
>      bool
> -    default y
> -    depends on PSERIES
>  
>  config XICS_SPAPR
>      bool
>      default y
> -    depends on PSERIES
> +    depends on XICS && PSERIES
>  
>  config XICS_KVM
>      bool
> diff --git a/hw/mem/Kconfig b/hw/mem/Kconfig
> index d1e635c..620fd4c 100644
> --- a/hw/mem/Kconfig
> +++ b/hw/mem/Kconfig
> @@ -1,5 +1,6 @@
>  config DIMM
>      bool
> +    select MEM_DEVICE
>  
>  config MEM_DEVICE
>      bool
> diff --git a/hw/ppc/Kconfig b/hw/ppc/Kconfig
> index b0095e1..b44e3bd 100644
> --- a/hw/ppc/Kconfig
> +++ b/hw/ppc/Kconfig
> @@ -1,11 +1,20 @@
>  config PSERIES
>      bool
> +    select DIMM
> +    select PCI
> +    select VFIO
> +    select XICS

Don't we want XICS_SPAPR ? or is there another toggle with KVM ?

>  config SPAPR_RNG
>      bool
> +    depends on PSERIES
>  
>  config POWERNV
>      bool
> +    select ISA_IPMI_BT

yes.

It is possible to start a PowerNV machine without defining a 
BT device but the machine relies on the BT device and the IPMI 
backend attached to it to powerdown. 

Ideally I would have preferred to define the device internally 
in the machine and plug it on the ISA bus but I couldn't find 
a way to do it cleanly. 

> +    select ISA_BUS
> +    select MC146818RTC
> +    select XICS

only for POWER8 machines. POWER9 uses XIVE.

Thanks,

C.

>  
>  config PPC405
>      bool
>