i915_vma_revoke_fence(9)

💅 i915_vma_revoke_fence(9) 💅

okay so welcome to the i915_vma_revoke_fence(9) page, straight out of the Kernel API Manual bestie. this one's short and sweet but it's literally load-bearing, so pay attention 💖

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✨ NAME ✨

i915_vma_revoke_fence — force-remove fence for a VMA

like, force-remove. not "ask nicely", not "politely suggest" — we are evicting that fence 🫶

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🦋 SYNOPSIS 🦋

void i915_vma_revoke_fence (struct i915_vma *vma );

yes that's the whole thing. void return, one argument, no drama (the drama is in the fence itself, iykyk) ✨

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🎀 ARGUMENTS 🎀

• vma — the vma to map linearly (not through a fence reg). like, we're doing the direct route here, no fence-reg middleman, no detour, just linear mapping energy 💅

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🌸 DESCRIPTION 🌸

okay so what does it actually do: this function force-removes any fence from the given object. every single one. no survivors.

and why would you want that? it's useful if the kernel wants to do untiled GTT access — because a fence is basically sitting there in the way being like "um actually i'm sorting the tiling" and the kernel's like "not today bestie" 😭

so yeah, the fence gets revoked. it's giving main character energy for the kernel, honestly 👑

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🧚 SEE ALSO 🧚

• Kernel file ./drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c — fence register handling(9)
• i915_vma_pin_fence(9)
• i915_reserve_fence(9)
• i915_unreserve_fence(9)
• intel_ggtt_restore_fences(9)
• tiling swizzling details(9)
• detect_bit_6_swizzle(9)
• i915_gem_object_do_bit_17_swizzle(9)
• i915_gem_object_save_bit_17_swizzle(9)

the whole fence friend group fr fr, go read them next, they all ate 🔥

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ngl there's nothing dangerous documented here, but remember: you're force-removing something. if some other part of your code was lowkey relying on that fence still being there... that's a you problem, bestie 🙈

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k bye, hope this helped!! this page came from ./drivers/gpu/drm/i915/gt and it's dated October 2026 — mwah, slay, drink some water, and remember to git blame responsibly 🍓💜⭐