Re: [Qemu-devel] [PATCH v3 4/8] hw/core: Add a config switch for the "register" device - Philippe Mathieu-Daudé

From: "Philippe Mathieu-Daudé" <philmd@redhat.com>
To: Thomas Huth <thuth@redhat.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Yang Zhong <yang.zhong@intel.com>,
	qemu-devel@nongnu.org
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>,
	qemu-arm@nongnu.org,
	Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>,
	Artyom Tarasenko <atar4qemu@gmail.com>,
	Peter Maydell <peter.maydell@linaro.org>
Subject: Re: [Qemu-devel] [PATCH v3 4/8] hw/core: Add a config switch for the "register" device
Date: Mon, 19 Aug 2019 13:54:24 +0200	[thread overview]
Message-ID: <4b760d05-7d18-f7b8-cf2f-d7ed855baf7c@redhat.com> (raw)
In-Reply-To: <20190817101931.28386-5-thuth@redhat.com>

On 8/17/19 12:19 PM, Thomas Huth wrote:
> The "register" device is only used by certain machines. Let's add
> a proper config switch for it so that it only gets compiled when we
> really need it.
> 
> Signed-off-by: Thomas Huth <thuth@redhat.com>
> ---
>  hw/Kconfig            | 1 +
>  hw/core/Kconfig       | 3 +++
>  hw/core/Makefile.objs | 2 +-
>  hw/dma/Kconfig        | 1 +
>  4 files changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/hw/Kconfig b/hw/Kconfig
> index dbae1c0852..b45db3c813 100644
> --- a/hw/Kconfig
> +++ b/hw/Kconfig
> @@ -76,3 +76,4 @@ config XILINX_AXI
>  
>  config XLNX_ZYNQMP
>      bool
> +    select REGISTER

I still find REGISTER confusing, and prefer Alistair's suggestion:
REGISTER_API.

Since this patch is valid:
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> diff --git a/hw/core/Kconfig b/hw/core/Kconfig
> index c2a1ae8122..d11920fcb3 100644
> --- a/hw/core/Kconfig
> +++ b/hw/core/Kconfig
> @@ -9,3 +9,6 @@ config FITLOADER
>  
>  config PLATFORM_BUS
>      bool
> +
> +config REGISTER
> +    bool
> diff --git a/hw/core/Makefile.objs b/hw/core/Makefile.objs
> index f8481d959f..d6cfb2a81b 100644
> --- a/hw/core/Makefile.objs
> +++ b/hw/core/Makefile.objs
> @@ -17,7 +17,7 @@ common-obj-$(CONFIG_SOFTMMU) += machine.o
>  common-obj-$(CONFIG_SOFTMMU) += loader.o
>  common-obj-$(CONFIG_FITLOADER) += loader-fit.o
>  common-obj-$(CONFIG_SOFTMMU) += qdev-properties-system.o
> -common-obj-$(CONFIG_SOFTMMU) += register.o
> +common-obj-$(CONFIG_REGISTER) += register.o
>  common-obj-$(CONFIG_SOFTMMU) += or-irq.o
>  common-obj-$(CONFIG_SOFTMMU) += split-irq.o
>  common-obj-$(CONFIG_PLATFORM_BUS) += platform-bus.o
> diff --git a/hw/dma/Kconfig b/hw/dma/Kconfig
> index 751dec5426..5c61b67bc0 100644
> --- a/hw/dma/Kconfig
> +++ b/hw/dma/Kconfig
> @@ -16,6 +16,7 @@ config I8257
>  
>  config ZYNQ_DEVCFG
>      bool
> +    select REGISTER
>  
>  config STP2000
>      bool
> 