drm_pagemap...grated_pages(9)

💖 drm_pagemap_retire_migrated_pages 💖

Okay bestie, welcome to the drm_pagemap...grated_pages(9) page from the Kernel API Manual — we're talking about drm_pagemap_retire_migrated_pages, the function that records migrated device-private folios. It's lowkey giving tiny-but-iconic, fr fr. 🫶✨

🌸 NAME 🌸

drm_pagemap_retire_migrated_pages — Record migrated device-private folios. That's the whole name vibe: it's the record-keeper for migrated device-private folios. 💅

✨ SYNOPSIS ✨

Here's the signature, bestie — copy it exactly, no autocorrect shenanigans:

void drm_pagemap_retire_migrated_pages (unsigned long *src_pfns ,
unsigned long npages );

🎀 ARGUMENTS 🎀

• src_pfns — the source array after migrate_vma_pages or migrate_device_pages. Yes, that exact array. 👀
• npages — the number of entries in src_pfns, so the function knows how many lil' entries are in the group chat. 🫶

🦋 DESCRIPTION 🦋

Okay so here's the actual vibe, no cap: this function flags device-private folios that were successfully migrated to RAM before finalize unlocks the sources. The migrated state is stored in the physical folio — yes, the folio itself — so it survives later folio splits, and subsequent migrations can skip it. Periodt. 💅🔥

🔗 SEE ALSO 🔗

If you wanna keep the group chat going, these are the related pages, files, and structs:

• Kernel file: ./drivers/gpu/drm/drm_pagemap.c
• Overview(9)
• Migration(9)
• struct drm_pagemap_zdd(9)
• drm_pagemap_zdd_alloc(9)
• drm_pagemap_zdd_get(9)
• drm_pagemap_zdd_destroy(9)
• drm_pagemap_zdd_put(9)
• drm_pagemap_migration_unlock_put_folio(9)
• drm_pagemap_migration_unlock_put_pages(9)
• drm_pagemap_get_devmem_page(9)
• drm_pagemap_migrate_map_device_private_pages(9)
• struct drm_pagemap_iova_state(9)
• drm_pagemap_migrate_map_system_pages(9)
• drm_pagemap_migrate_populate_src_pages(9)
• drm_pagemap_migrate_unmap_pages(9)
• struct migrate_range_loc(9)
• drm_pagemap_cpages(9)
• drm_pagemap_migrate_to_devmem(9)
• drm_pagemap_migrate_populate_ram_pfn(9)
• struct drm_pagemap_dev_hold(9)
• drm_pagemap_reinit(9)
• drm_pagemap_init(9)
• drm_pagemap_put(9)
• drm_pagemap_page_get_flags(9)
• drm_pagemap_page_set_flags(9)
• drm_pagemap_skip_retired_pages(9)
• drm_pagemap_evict_to_ram(9)
• __drm_pagemap_migrate_to_ram(9)
• drm_pagemap_folio_free(9)
• drm_pagemap_migrate_to_ram(9)
• drm_pagemap_pagemap_ops_get(9)
• drm_pagemap_devmem_init(9)
• drm_pagemap_page_to_dpagemap(9)
• drm_pagemap_populate_mm(9)

That's the whole page, bestie! 🎀 Cute little sign-off from source/version ./drivers/gpu/drm, dated October 2026, on drm_pagemap...grated_pages(9). Byeee — go record those migrated folios! 💜🔥