xe_vm_validate_rebind(9)

💖 xe_vm_validate_rebind(9) 💖

Okay bestie, welcome to the Kernel API Manual — this one is lowkey iconic: it validates buffer objects and rebinds vmas, and it wants you to understand every single detail. No skimming, fr fr. 🫶

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🌸 NAME 🌸

xe_vm_validate_rebind — validate buffer objects and rebind vmas. That’s the whole vibe check. ✨

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✨ SYNOPSIS ✨

int xe_vm_validate_rebind (struct xe_vm *vm , struct drm_exec *exec ,
unsigned int num_fences );

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🎀 ARGUMENTS 🎀

• vm — the vm for which we are rebinding. Main character energy, honestly. 💅
• exec — the struct drm_exec with the locked GEM objects. Locked and loaded, iykyk. 🔥
• num_fences — the number of fences to reserve for the operation, and that is not counting rebinds and validations. Periodt. 🎀

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🦋 DESCRIPTION 🦋

So basically: this validates all evicted gem objects and rebinds their vmas. Slay. 💖

Heads up though — rebindings may cause evictions, which means the validation-rebind sequence is rerun until there are no more objects to validate. It’s giving “keep going until the vibe is immaculate.” 🦋

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⭐ RETURN ⭐

0 on success, negative error code on error. No cap. 🌈

In particular, it may return -EINTR or -ERESTARTSYS if interrupted, and -EDEADLK if the drm_exec transaction needs to be restarted. Big “try again, bestie” energy. 😭

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🌈 SEE ALSO 🌈

• Kernel file: ./drivers/gpu/drm/xe/xe_vm.c
• xe_vm_drm_exec_lock(9)
• xe_vm_remove_compute_exec_queue(9)
• xe_vm_kill(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_vm_invalidate_vma(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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Mwah 💋 — source: ./drivers/gpu/drm/xe, dated October 2026, and the page is xe_vm_validate_rebind(9). Bye bestie, go validate and rebind responsibly 🫶✨