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[v3,02/10] hw/nvram: Restrict fw_cfg QOM interface to sysemu and tools

Message ID 20220111184309.28637-3-f4bug@amsat.org
State New
Headers show
Series hw/dma: Use dma_addr_t type definition when relevant | expand

Commit Message

Philippe Mathieu-Daudé Jan. 11, 2022, 6:43 p.m. UTC
From: Philippe Mathieu-Daudé <philmd@redhat.com>

fw_cfg QOM interface is required by system emulation and
qemu-storage-daemon. User-mode emulation doesn't need it.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/nvram/meson.build | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

Comments

David Hildenbrand Jan. 12, 2022, 9:08 a.m. UTC | #1
On 11.01.22 19:43, Philippe Mathieu-Daudé wrote:
> From: Philippe Mathieu-Daudé <philmd@redhat.com>
> 
> fw_cfg QOM interface is required by system emulation and
> qemu-storage-daemon. User-mode emulation doesn't need it.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
>  hw/nvram/meson.build | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/hw/nvram/meson.build b/hw/nvram/meson.build
> index 202a5466e63..f5ee9f6b88c 100644
> --- a/hw/nvram/meson.build
> +++ b/hw/nvram/meson.build
> @@ -1,5 +1,7 @@
> -# QOM interfaces must be available anytime QOM is used.
> -qom_ss.add(files('fw_cfg-interface.c'))
> +if have_system or have_tools
> +  # QOM interfaces must be available anytime QOM is used.
> +  qom_ss.add(files('fw_cfg-interface.c'))
> +endif
>  
>  softmmu_ss.add(files('fw_cfg.c'))
>  softmmu_ss.add(when: 'CONFIG_CHRP_NVRAM', if_true: files('chrp_nvram.c'))

Reviewed-by: David Hildenbrand <david@redhat.com>
Richard Henderson Jan. 28, 2022, 12:46 a.m. UTC | #2
On 1/12/22 05:43, Philippe Mathieu-Daudé wrote:
> From: Philippe Mathieu-Daudé <philmd@redhat.com>
> 
> fw_cfg QOM interface is required by system emulation and
> qemu-storage-daemon. User-mode emulation doesn't need it.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
>   hw/nvram/meson.build | 6 ++++--
>   1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/hw/nvram/meson.build b/hw/nvram/meson.build
> index 202a5466e63..f5ee9f6b88c 100644
> --- a/hw/nvram/meson.build
> +++ b/hw/nvram/meson.build
> @@ -1,5 +1,7 @@
> -# QOM interfaces must be available anytime QOM is used.
> -qom_ss.add(files('fw_cfg-interface.c'))
> +if have_system or have_tools
> +  # QOM interfaces must be available anytime QOM is used.
> +  qom_ss.add(files('fw_cfg-interface.c'))
> +endif

Is this intended to save the compilation of one file, if and only if this is a completely 
user-only build?  Because if this is a normal "all targets" build, this will still be 
included in the user-only binaries, afaics (libqom -> qom -> common_ss).


r~
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Patch

diff --git a/hw/nvram/meson.build b/hw/nvram/meson.build
index 202a5466e63..f5ee9f6b88c 100644
--- a/hw/nvram/meson.build
+++ b/hw/nvram/meson.build
@@ -1,5 +1,7 @@ 
-# QOM interfaces must be available anytime QOM is used.
-qom_ss.add(files('fw_cfg-interface.c'))
+if have_system or have_tools
+  # QOM interfaces must be available anytime QOM is used.
+  qom_ss.add(files('fw_cfg-interface.c'))
+endif
 
 softmmu_ss.add(files('fw_cfg.c'))
 softmmu_ss.add(when: 'CONFIG_CHRP_NVRAM', if_true: files('chrp_nvram.c'))