Re: [Buildroot] [PATCH] package/mesa3d: add intel-virtio host native context config

Hello Adam, All,

Le 10/07/2026 à 15:32, Adam Ford a écrit :
> Add BR2_PACKAGE_MESA3D_HOST_NATIVE_CONTEXT_DRIVER_INTEL in the same
> pattern as amdgpu-virtio. When enabled, -Dintel-virtio-experimental=true
> defines HAVE_INTEL_VIRTIO so the guest-side Intel native context
> (i915 and xe context types) is compiled in. This is the guest half
> of the Intel vDRM GPU passthrough path, usable by the crocus/iris
> (OpenGL) and ANV (Vulkan) drivers.
> 
> Note that this is an experimental Mesa feature (the upstream meson
> option is named intel-virtio-experimental) and is disabled by default.
> 
> Signed-off-by: Adam Ford <[email protected]>
> 
> diff --git a/package/mesa3d/Config.in b/package/mesa3d/Config.in
> index e184039150..ad02b5e829 100644
> --- a/package/mesa3d/Config.in
> +++ b/package/mesa3d/Config.in
> @@ -130,6 +130,7 @@ config BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_CROCUS
>  	bool "Gallium crocus driver"
>  	depends on BR2_i386 || BR2_x86_64
>  	select BR2_PACKAGE_MESA3D_GALLIUM_DRIVER
> +	select BR2_PACKAGE_MESA3D_HOST_NATIVE_CONTEXT_SUPPORTED_DRIVER
>  	help
>  	  Mesa driver for gen4-7 Intel GPUs.
>  
> @@ -167,6 +168,7 @@ config BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_IRIS
>  	bool "Gallium iris driver"
>  	depends on BR2_PACKAGE_MESA3D_LLVM
>  	select BR2_PACKAGE_MESA3D_GALLIUM_DRIVER
> +	select BR2_PACKAGE_MESA3D_HOST_NATIVE_CONTEXT_SUPPORTED_DRIVER
>  	select BR2_PACKAGE_MESA3D_NEEDS_PRECOMP_COMPILER
>  	select BR2_PACKAGE_MESA3D_RUSTICL_SUPPORTED_DRIVER
>  	help
> @@ -393,6 +395,7 @@ config BR2_PACKAGE_MESA3D_VULKAN_DRIVER_INTEL
>  	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17 # memfd.h
>  	depends on BR2_TOOLCHAIN_USES_GLIBC # ifunc, static_assert
>  	depends on BR2_PACKAGE_MESA3D_LLVM
> +	select BR2_PACKAGE_MESA3D_HOST_NATIVE_CONTEXT_SUPPORTED_DRIVER
>  	select BR2_PACKAGE_MESA3D_NEEDS_PRECOMP_COMPILER
>  	select BR2_PACKAGE_MESA3D_VULKAN_DRIVER
>  	help
> @@ -459,6 +462,22 @@ config BR2_PACKAGE_MESA3D_HOST_NATIVE_CONTEXT_DRIVER_FREEDRENO
>  	  Select this when running Mesa inside a virtual machine
>  	  with virtio-gpu host native context support.
>  
> +config BR2_PACKAGE_MESA3D_HOST_NATIVE_CONTEXT_DRIVER_INTEL
> +	bool "intel-virtio"
> +	depends on BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_CROCUS || \
> +		BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_IRIS || \
> +		BR2_PACKAGE_MESA3D_VULKAN_DRIVER_INTEL
> +	help
> +	  Enable VirtIO support for Intel native contexts
> +	  used by the crocus/iris (OpenGL) and ANV (Vulkan)
> +	  drivers.
> +
> +	  This is an experimental Mesa feature and is disabled
> +	  by default.
> +
> +	  Select this when running Mesa inside a virtual machine
> +	  with virtio-gpu host native context support.
> +
>  config BR2_PACKAGE_MESA3D_HOST_NATIVE_CONTEXT_SUPPORTED_DRIVER
>  	bool
>  
> diff --git a/package/mesa3d/mesa3d.mk b/package/mesa3d/mesa3d.mk
> index 8e6c2ee5b8..87377b7ce4 100644
> --- a/package/mesa3d/mesa3d.mk
> +++ b/package/mesa3d/mesa3d.mk
> @@ -164,6 +164,12 @@ else
>  MESA3D_CONF_OPTS += -Damdgpu-virtio=false
>  endif
>  
> +ifeq ($(BR2_PACKAGE_MESA3D_HOST_NATIVE_CONTEXT_DRIVER_INTEL),y)
> +MESA3D_CONF_OPTS += -Dintel-virtio-experimental=true
> +else
> +MESA3D_CONF_OPTS += -Dintel-virtio-experimental=false
> +endif
> +

Looks good.

Joseph, since is related to mesa virtio support can you have a look too?
Thanks!

Reviewed-by: Romain Naour <[email protected]>

Best regards,
Romain

>  ifneq ($(BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_FREEDRENO)$(BR2_PACKAGE_MESA3D_VULKAN_DRIVER_FREEDRENO),)
>  MESA3D_FREEDRENO_KMDS = msm
>  ifeq ($(BR2_PACKAGE_MESA3D_HOST_NATIVE_CONTEXT_DRIVER_FREEDRENO),y)

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