drm/pagemap: Add helper to access backing devmem allocation

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drm_pagemap_zdd is private, so add drm_pagemap_page_to_devmem() to let
callers get the drm_pagemap_devmem backing a device-private/coherent
page. Add a NULL stub for !CONFIG_ZONE_DEVICE.

Cc: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20261001033602.3166274-7-himal.prasad.ghimiray@intel.com
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

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Himal Prasad Ghimiray 2026-10-01 09:06:04 +05:30 • committed by Rodrigo Vivi

parent 123c1f0430

commit 2069eeb76a

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15

drivers/gpu/drm/drm_pagemap.c

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7

include/drm/drm_pagemap.h

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