On Thu, 2019-02-07 at 09:59 +0100, Thomas Zimmermann wrote:
> Most TTM drivers define the constant DRM_FILE_PAGE_OFFSET of the same
> value. The only exception is vboxvideo, which is being converted to
> the
> new offset by this patch. Unifying the constants in a single place
> simplifies the driver code.
>
> Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 --
> drivers/gpu/drm/ast/ast_drv.h | 2 --
> drivers/gpu/drm/bochs/bochs.h | 2 --
> drivers/gpu/drm/cirrus/cirrus_drv.h | 1 -
> drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c | 2 --
> drivers/gpu/drm/mgag200/mgag200_drv.h | 1 -
> drivers/gpu/drm/nouveau/nouveau_drv.h | 2 --
> drivers/gpu/drm/qxl/qxl_drv.h | 3 ---
> drivers/gpu/drm/radeon/radeon_ttm.c | 2 --
> drivers/gpu/drm/virtio/virtgpu_ttm.c | 2 --
> drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 2 +-
> drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 1 -
> drivers/gpu/drm/vmwgfx/vmwgfx_ttm_glue.c | 2 +-
> drivers/staging/vboxvideo/vbox_drv.h | 2 --
> include/drm/ttm/ttm_bo_driver.h | 2 ++
> 15 files changed, 4 insertions(+), 24 deletions(-)
>
>
...
> diff --git a/include/drm/ttm/ttm_bo_driver.h
> b/include/drm/ttm/ttm_bo_driver.h
> index cbf3180cb612..c0bed72492f3 100644
> --- a/include/drm/ttm/ttm_bo_driver.h
> +++ b/include/drm/ttm/ttm_bo_driver.h
> @@ -49,6 +49,8 @@
> #define TTM_MEMTYPE_FLAG_MAPPABLE (1 << 1) /* Memory
> mappable */
> #define TTM_MEMTYPE_FLAG_CMA (1 << 3) /* Can't map
> aperture */
>
> +#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
> +
IMO strictly, the place in the drm file address space where a driver
chooses to insert the TTM bo address space is to be determined by DRM,
(as also the define indicates) rather than TTM. So I think the right
place for this define is a drm header, not a ttm header.
Thanks,
Thomas
> struct ttm_mem_type_manager;
>
> struct ttm_mem_type_manager_func {
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