xe_vm_invalidate_vma(9)

💅 xe_vm_invalidate_vma(9) — like, the kernel API manual page, bestie 🎀

okay so this is a page from the Kernel API Manual and it's about xe_vm_invalidate_vma, which — ngl — is kind of a baddie. it goes in and just yeets the GPU mappings for a VMA without even asking for a lock first. main character energy fr fr. let's get into it ✨

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🌸 NAME 🌸

xe_vm_invalidate_vma — invalidate GPU mappings for a VMA without a lock 🫶

like, no lock. none. it's giving confident. 💅

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✨ SYNOPSIS ✨

int xe_vm_invalidate_vma (struct xe_vma *vma );

that's it. that's the whole signature. she's simple, she's elegant, she takes exactly one (1) argument and returns an int. icon behavior honestly. ⭐

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🦋 ARGUMENTS 🦋

• vma — the VMA to invalidate. that's the vibe. hand it over and it gets invalidated. 🙈

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💖 DESCRIPTION 💖

okay so here's what actually happens, and it's kind of a lot. 👑

she walks a list of page table leaves and, for each one, memsets the entries owned by this VMA to zero. literally zeroing them out. gone. poof. 🫧 then she invalidates the TLBs, and then — and this is the part where you do not interrupt her — she blocks until the TLB invalidation is complete. no cap. she waits it out. 💀

so like, don't expect this to be a fast little "fire and forget" situation, because it is very much a "fire and then stand there until it's done" situation. respect the process. 🌈

Returns 0 for success, or a negative error code otherwise. so if you get anything below zero, that's a bad vibe check and you should probably look into it. 😭

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🎀 SEE ALSO 🎀

all her friends, all linked, all iconic. iykyk:

Kernel file ./drivers/gpu/drm/xe/xe_vm.c, plus:

• xe_vm_drm_exec_lock(9)
• xe_vm_remove_compute_exec_queue(9)
• xe_vm_kill(9)
• xe_vm_validate_rebind(9)
• xe_vm_bump_lru(9)
• xe_vm_resume_rebind_worker(9)
• xe_vm_add_fault_entry_pf(9)
• xe_vm_range_rebind(9)
• xe_vm_range_unbind(9)
• xe_vma_mem_attr_copy(9)
• xe_vm_lock_vma(9)
• xe_vm_create_scratch(9)
• xe_vm_find_vma_by_addr(9)
• xe_vma_has_default_mem_attrs(9)
• struct xe_vma_lock_and_validate_flags(9)
• xe_vm_bind_kernel_bo(9)
• xe_vm_lock(9)
• xe_vm_unlock(9)
• xe_vm_invalidate_vma_submit(9)
• xe_vma_need_vram_for_atomic(9)
• xe_vm_alloc_madvise_vma(9)
• xe_vm_find_cpu_addr_mirror_vma_range(9)
• xe_vm_alloc_cpu_addr_mirror_vma(9)
• xe_vm_add_exec_queue(9)
• xe_vm_remove_exec_queue(9)

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💜 quick reminder bestie: the whole "no lock" thing in the NAME section is real, not just a cute tagline. this function does its thing without a lock, so if you were expecting it to hold one for you, that's not the vibe. plan accordingly. 🍓

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okay that's the page!! 🧚 and before you go — this whole thing lives in ./drivers/gpu/drm/xe and it's dated October 2026, so like, mark your calendar or whatever. mwah, bye bestie 💅✨🌸