svm_range_split(9)

💖 NAME 💖

svm_range_split(9) from the Kernel API Manual — split a range in 2 ranges, and that's literally the whole assignment bestie. 💅

✨ SYNOPSIS ✨

int svm_range_split (struct svm_range *prange , uint64_t start , uint64_t last , struct svm_range **new );

💅 ARGUMENTS 💅

• prange — the svm range you're splitting. main character energy fr. 🌟
• start — the remaining range start address, in pages. 📄
• last — the remaining range last address, in pages. 🧾
• new — the result new range generated, aka the fresh new range. 🐣

🦋 DESCRIPTION 🦋

Okay so there are two cases only, no extras, no secret third case, periodt:

case 1: if start == prange->start prange ==> prange[start, last] new range [last + 1, prange->last]

case 2: if last == prange->last prange ==> prange[start, last] new range [prange->start, start - 1]

That's it. Case 1 is the start == prange->start situation, and case 2 is the last == prange->last situation. The code-shape stays exactly like that, iykyk. 🫶

🎀 RETURN 🎀

• 0 — OK, slay. ✅
• -ENOMEM — out of memory. 😭
• -EINVAL — invalid start, last. 💀

🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/amd/amdkfd/kfd_svm.c
• svm_range_unlink(9)
• svm_range_add_to_svms(9)
• svm_range_debug_dump(9)
• svm_range_split_adjust(9)
• svm_range_list_lock_and_flush_work(9)
• svm_range_evict(9)
• svm_range_add(9)
• svm_range_cpu_invalidate_pagetables(9)
• svm_range_from_addr(9)
• svm_range_check_vm(9)
• svm_range_is_valid(9)
• svm_range_best_prefetch_location(9)

okay that's the page bestie 💖 svm_range_split(9) is serving Kernel API Manual energy, straight from ./drivers/gpu/drm/amd/amdkfd, dated October 2026 — bye, go split responsibly 🎀✨