Commit 50891bea authored by Daniel Vetter's avatar Daniel Vetter
Browse files

drm/etnaviv: User FOLL_LONGTERM in userptr 



There's no mmu notifier or anything like that, releasing this pin is
entirely up to userspace. Hence FOLL_LONGTERM.

No cc: stable for this patch since a lot of the infrastructure around
FOLL_LONGETRM (like not allowing it for pages currently sitting in
ZONE_MOVEABLE before they're migrated) is still being worked on. So
not big benefits yet.

Reviewed-by: default avatarJohn Hubbard <jhubbard@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@intel.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Russell King <linux+etnaviv@armlinux.org.uk>
Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: etnaviv@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20210301095254.1946084-2-daniel.vetter@ffwll.ch
parent cd5297b0

drivers/gpu/drm/etnaviv/etnaviv_gem.c

+2 −1
Original line number Diff line number Diff line
@@ -689,7 +689,8 @@ static int etnaviv_gem_userptr_get_pages(struct etnaviv_gem_object *etnaviv_obj) 
		struct page **pages = pvec + pinned;



		ret = pin_user_pages_fast(ptr, num_pages,

					  FOLL_WRITE | FOLL_FORCE, pages);

					  FOLL_WRITE | FOLL_FORCE | FOLL_LONGTERM,

					  pages);

		if (ret < 0) {

			unpin_user_pages(pvec, pinned);

			kvfree(pvec);