linux-kernel - Re: [PATCH drm-misc-next v4 2/8] drm/gpuvm: allow building as module

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Message-ID: <CAPM=9tzHPqviNL0VX5GnSZKkpJz0xy8520S5n_3SZaJr5ZdM-w@mail.gmail.com>
Date:   Mon, 25 Sep 2023 10:42:35 +1000
From:   Dave Airlie <airlied@...il.com>
To:     Danilo Krummrich <dakr@...hat.com>
Cc:     daniel@...ll.ch, matthew.brost@...el.com,
        thomas.hellstrom@...ux.intel.com, sarah.walker@...tec.com,
        donald.robson@...tec.com, boris.brezillon@...labora.com,
        christian.koenig@....com, faith.ekstrand@...labora.com,
        dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH drm-misc-next v4 2/8] drm/gpuvm: allow building as module

On Thu, 21 Sept 2023 at 00:43, Danilo Krummrich <dakr@...hat.com> wrote:
>
> Currently, the DRM GPUVM does not have any core dependencies preventing
> a module build.
>
> Also, new features from subsequent patches require helpers (namely
> drm_exec) which can be built as module.
>
> Reviewed-by: Christian König <christian.koenig@....com>
> Signed-off-by: Danilo Krummrich <dakr@...hat.com>

Reviewed-by: Dave Airlie <airlied@...hat.com>

> ---
>  drivers/gpu/drm/Kconfig         | 7 +++++++
>  drivers/gpu/drm/Makefile        | 2 +-
>  drivers/gpu/drm/drm_gpuvm.c     | 3 +++
>  drivers/gpu/drm/nouveau/Kconfig | 1 +
>  4 files changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
> index ab9ef1c20349..0f78a03e4e84 100644
> --- a/drivers/gpu/drm/Kconfig
> +++ b/drivers/gpu/drm/Kconfig
> @@ -216,6 +216,13 @@ config DRM_EXEC
>         help
>           Execution context for command submissions
>
> +config DRM_GPUVM
> +       tristate
> +       depends on DRM && DRM_EXEC
> +       help
> +         GPU-VM representation providing helpers to manage a GPUs virtual
> +         address space
> +
>  config DRM_BUDDY
>         tristate
>         depends on DRM
> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> index 7a84b3cddeab..8e1bde059170 100644
> --- a/drivers/gpu/drm/Makefile
> +++ b/drivers/gpu/drm/Makefile
> @@ -45,7 +45,6 @@ drm-y := \
>         drm_vblank.o \
>         drm_vblank_work.o \
>         drm_vma_manager.o \
> -       drm_gpuvm.o \
>         drm_writeback.o
>  drm-$(CONFIG_DRM_LEGACY) += \
>         drm_agpsupport.o \
> @@ -81,6 +80,7 @@ obj-$(CONFIG_DRM_PANEL_ORIENTATION_QUIRKS) += drm_panel_orientation_quirks.o
>  #
>  #
>  obj-$(CONFIG_DRM_EXEC) += drm_exec.o
> +obj-$(CONFIG_DRM_GPUVM) += drm_gpuvm.o
>
>  obj-$(CONFIG_DRM_BUDDY) += drm_buddy.o
>
> diff --git a/drivers/gpu/drm/drm_gpuvm.c b/drivers/gpu/drm/drm_gpuvm.c
> index 7074bcad5b28..bfea4a8a19ec 100644
> --- a/drivers/gpu/drm/drm_gpuvm.c
> +++ b/drivers/gpu/drm/drm_gpuvm.c
> @@ -1723,3 +1723,6 @@ drm_gpuva_ops_free(struct drm_gpuvm *gpuvm,
>         kfree(ops);
>  }
>  EXPORT_SYMBOL_GPL(drm_gpuva_ops_free);
> +
> +MODULE_DESCRIPTION("DRM GPUVM");
> +MODULE_LICENSE("GPL");
> diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig
> index c52e8096cca4..1e6aaf95ff7c 100644
> --- a/drivers/gpu/drm/nouveau/Kconfig
> +++ b/drivers/gpu/drm/nouveau/Kconfig
> @@ -11,6 +11,7 @@ config DRM_NOUVEAU
>         select DRM_TTM
>         select DRM_TTM_HELPER
>         select DRM_EXEC
> +       select DRM_GPUVM
>         select DRM_SCHED
>         select I2C
>         select I2C_ALGOBIT
> --
> 2.41.0
>