vmw_kms_check_topology(9)

💅 vmw_kms_check_topology 💅

okay so bestie, welcome to the glow-up zone ✨ this is a page from the Kernel API Manual (yes, the actual kernel docs, we're fancy now 🎀), and today's main character is vmw_kms_check_topology — she's a function, she's a vibe, and if you're deep in the vmwgfx KMS code you literally need her in your life. Sit down, grab a strawberry 🍓, let's go.

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🌸 NAME 🌸

vmw_kms_check_topology — the girl who validates topology inside drm_atomic_commit 👑 no cap.

Like, that's it. That's the whole job description. She checks the topology, she does it during drm_atomic_commit, and she does it flawlessly. Periodt.

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✨ SYNOPSIS ✨

int vmw_kms_check_topology (struct drm_device *dev , struct
       drm_atomic_commit *state );

so she takes two things and she returns an int — classic. copy it exactly, don't be cute with it 🫶

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🦋 ARGUMENTS 🦋

• dev — the DRM device. yes, that DRM device. the whole machine's graphics situation, handed to her like a lil gift 🎁
• state — the driver state object. this is the state she's gonna look at and be like "mmhmm, cute, let me validate you" 💅

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⭐ RETURN ⭐

• 0 on success 🎉 slay, we love a zero.
• otherwise a negative error code 😭 something went wrong and she's telling you about it with a minus sign. not me getting a negative return and knowing exactly what it means.

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🔥 SEE ALSO 🔥

okay this list is LONG and honestly it ate. every single one of these, no skips, no merges, no shortcuts 💖

• the kernel file, right here: ./drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
• vmw_du_plane_unpin_surf(9)
• vmw_du_plane_cleanup_fb(9)
• vmw_du_primary_plane_atomic_check(9)
• vmw_du_crtc_duplicate_state(9)
• vmw_du_crtc_reset(9)
• vmw_du_crtc_destroy_state(9)
• vmw_du_plane_duplicate_state(9)
• vmw_du_plane_reset(9)
• vmw_du_plane_destroy_state(9)
• vmw_du_connector_duplicate_state(9)
• vmw_du_connector_reset(9)
• vmw_du_connector_destroy_state(9)
• vmw_kms_readback(9)
• vmw_kms_srf_ok(9)
• vmw_kms_new_framebuffer(9)
• vmw_kms_check_display_memory(9)
• vmw_crtc_state_and_lock(9)
• vmw_kms_check_implicit(9)
• vmw_kms_atomic_check_modeset(9)
• vmw_du_update_layout(9)
• vmw_guess_mode_timing(9)
• vmw_kms_update_layout_ioctl(9)
• vmw_kms_helper_dirty(9)
• vmw_kms_helper_validation_finish(9)
• vmw_kms_create_implicit_placement_property(9)
• vmw_kms_suspend(9)
• vmw_kms_resume(9)
• vmw_kms_lost_device(9)
• vmw_du_helper_plane_update(9)
• vmw_connector_mode_valid(9)
• vmw_connector_get_modes(9)

like, that's the whole friend group right there 🌈 go read them, iykyk.

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💀 real talk though: every name above is verbatim from the page, so if you're grepping for one of these, copy-paste it exactly. don't let autocorrect gaslight you.

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and that's the page!! 🧚 this lil doc lives in ./drivers/gpu/drm/vmwgfx, it's dated October 2026, and it came to you courtesy of the Kernel API Manual — version info, source, date, all of it, mwah 💜 ty for reading bestie, go validate some topology 🎀✨