vmw_stdu_update_st(9)

💅 vmw_stdu_update_st — the Kernel API Manual moment

okay so bestie, welcome to vmw_stdu_update_st(9), a whole kernel API manual page and honestly it's giving "small function, big responsibilities" ✨

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🌸 NAME 🌸

vmw_stdu_update_st — a Full update of a Screen Target, no cap 🎯

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✨ SYNOPSIS ✨

int vmw_stdu_update_st (struct vmw_private *dev_priv , struct
       vmw_screen_target_display_unit *stdu );

like yes it returns an int, and yes those are the args, we'll get to them 🫶

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🎀 ARGUMENTS 🎀

• dev_priv — the VMW DRM device. your main character, basically 👑
• stdu — the display unit that's affected, aka the one going through it rn 💫

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🦋 DESCRIPTION 🦋

so here's the tea: you need to call this function whenever the content of a screen target has changed completely. completely completely. full glow-up, not a little touch-up 💅

typically that happens as a result of a backing surface change — iykyk 😌

fr fr though, "completely" is the keyword here. this isn't your subtle little incremental-update situation, it's the whole screen target getting a new outfit.

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🔥 RETURN 🔥

• 0 on success 🎉
• an error code on failure 😭

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💜 SEE ALSO 💜

the whole friend group, in order, bestie — no one gets left out 🫶

• 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_define_st(9)
• vmw_stdu_bind_st(9)
• vmw_stdu_populate_update(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)

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🧚 and that's the whole page! no notes, she ate 💅

okay so the cute little sign-off: this one comes from the source ./drivers/gpu/drm/vmwgfx, dated October 2026, and the manual is literally named vmw_stdu_update_st(9). slay, go call it when the screen target fully changes, mwah 💖🎀