vmw_stdu_define_st(9)

💖 vmw_stdu_define_st (9) — the Kernel API Manual moment 💖

okay so bestie, welcome to the vmw_stdu_define_st(9) page of the Kernel API Manual, and yes we ARE reading kernel docs together, this is our bonding era 🫶

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✨ NAME ✨

vmw_stdu_define_st — literally defines a Screen Target. that's the whole vibe. 🎀

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🌸 SYNOPSIS 🌸

int vmw_stdu_define_st (struct vmw_private *dev_priv , struct
vmw_screen_target_display_unit *stdu , struct drm_display_mode *mode ,
int crtc_x , int crtc_y );

she takes five args and returns an int, no cap 💅

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🦋 ARGUMENTS 🦋

• dev_priv — the VMW DRM device. your main character device, fr.
• stdu — the display unit we're creating a Screen Target for. this is the lil guy we're building 🥺
• mode — the mode to set. the resolution/refresh situation.
• crtc_x — X coordinate of the screen target, relative to the framebuffer origin. horizontal placement, iykyk.
• crtc_y — Y coordinate of the screen target, relative to the framebuffer origin. the vertical one, obviously 🍓

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💜 DESCRIPTION 💜

so basically: this creates a STDU that we can use later. and the important bit — this function gets called whenever the framebuffer size changes. every time. size change = this runs. periodt. 🔥

like, it's not a "call it once and forget" situation, it's a "framebuffer resized, time to re-do the thing" situation. iconic behaviour honestly.

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⭐ RETURN ⭐

• 0 on success 🎉
• an error code on failure 😭 (go check what the error code actually says, bestie, don't guess)

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🌈 SEE ALSO 🌈

you want the whole friend group? here's the whole friend group. all of them, in the kernel file ./drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c:

• struct vmw_stdu_dirty(9)
• struct vmw_screen_target_display_unit(9)
• vmw_stdu_crtc_destroy(9)
• vmw_stdu_bind_st(9)
• vmw_stdu_populate_update(9)
• vmw_stdu_update_st(9)
• vmw_stdu_destroy_st(9)
• vmw_stdu_crtc_mode_set_nofb(9)
• vmw_stdu_bo_cpu_clip(9)
• vmw_stdu_bo_cpu_commit(9)
• vmw_kms_stdu_readback(9)
• vmw_kms_stdu_surface_clip(9)
• vmw_kms_stdu_surface_fifo_commit(9)
• vmw_kms_stdu_surface_dirty(9)
• vmw_stdu_encoder_destroy(9)
• vmw_stdu_connector_destroy(9)
• vmw_stdu_primary_plane_cleanup_fb(9)
• vmw_stdu_primary_plane_prepare_fb(9)
• vmw_stdu_plane_update_bo(9)
• vmw_stdu_plane_update_surface(9)
• vmw_stdu_primary_plane_atomic_update(9)
• vmw_stdu_init(9)
• vmw_stdu_destroy(9)
• vmw_kms_stdu_init_display(9)

happy reading, bestie, this list ate and left no crumbs 👑

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reminder that everything above lives in ./drivers/gpu/drm/vmwgfx — that's the folder, that's the home base 🧚

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and that's the page!! mwah 💋 this little sign-off comes to you from ./drivers/gpu/drm/vmwgfx, dated October 2026, and it's called vmw_stdu_define_st(9) — stream it, bookmark it, tell your friends 💖✨