Brendan King b04ce1e718 drm/imagination: Break an object reference loop ... When remaining resources are being cleaned up on driver close, outstanding VM mappings may result in resources being leaked, due to an object reference loop, as shown below, with each object (or set of objects) referencing the object below it: PVR GEM Object GPU scheduler "finished" fence GPU scheduler “scheduled” fence PVR driver “done” fence PVR Context PVR VM Context PVR VM Mappings PVR GEM Object The reference that the PVR VM Context has on the VM mappings is a soft one, in the sense that the freeing of outstanding VM mappings is done as part of VM context destruction; no reference counts are involved, as is the case for all the other references in the loop. To break the reference loop during cleanup, free the outstanding VM mappings before destroying the PVR Context associated with the VM context. Signed-off-by: Brendan King <brendan.king@imgtec.com> Signed-off-by: Matt Coster <matt.coster@imgtec.com> Reviewed-by: Frank Binns <frank.binns@imgtec.com> Cc: stable@vger.kernel.org Link: https://patchwork.freedesktop.org/patch/msgid/8a25924f-1bb7-4d9a-a346-58e871dfb1d1@imgtec.com		2024-11-04 09:41:38 +00:00
..
Kconfig	drm/imagination: Implement job submission and scheduling	2023-11-23 09:01:47 +01:00
Makefile	kbuild: use $(src) instead of $(srctree)/$(src) for source directory	2024-05-10 04:34:52 +09:00
pvr_ccb.c	drm/imagination: Implement free list and HWRT create and destroy ioctls	2023-11-23 09:01:46 +01:00
pvr_ccb.h	drm/imagination: Implement firmware infrastructure and META FW support	2023-11-23 09:01:46 +01:00
pvr_cccb.c	drm/imagination: Implement context creation/destruction ioctls	2023-11-23 09:01:46 +01:00
pvr_cccb.h	drm/imagination: Numerous documentation fixes.	2023-11-28 18:56:03 +01:00
pvr_context.c	drm/imagination: Break an object reference loop	2024-11-04 09:41:38 +00:00
pvr_context.h	drm/imagination: Break an object reference loop	2024-11-04 09:41:38 +00:00
pvr_debugfs.c	drm/imagination: Add firmware trace to debugfs	2023-11-23 09:01:47 +01:00
pvr_debugfs.h	drm/imagination: Add firmware trace to debugfs	2023-11-23 09:01:47 +01:00
pvr_device_info.c	drm/imagination: Fixed warning due to implicit cast to bool	2023-12-04 09:41:34 +01:00
pvr_device_info.h	drm/imagination: Add GPU ID parsing and firmware loading	2023-11-23 09:01:46 +01:00
pvr_device.c	drm/imagination: pvr_device_process_active_queues now static	2023-12-04 09:41:59 +01:00
pvr_device.h	drm/imagination: Add a per-file PVR context list	2024-11-04 09:41:32 +00:00
pvr_drv.c	drm/imagination: Add a per-file PVR context list	2024-11-04 09:41:32 +00:00
pvr_drv.h	drm/imagination: Add GPU ID parsing and firmware loading	2023-11-23 09:01:46 +01:00
pvr_free_list.c	drm/imagination: Remove unneeded semicolon	2023-11-28 13:55:44 +01:00
pvr_free_list.h	drm/imagination: Implement free list and HWRT create and destroy ioctls	2023-11-23 09:01:46 +01:00
pvr_fw_info.h	drm/imagination: Numerous documentation fixes.	2023-11-28 18:56:03 +01:00
pvr_fw_meta.c	drm/imagination: Fixed missing header in pvr_fw_meta	2023-12-04 09:41:48 +01:00
pvr_fw_meta.h	drm/imagination: Implement firmware infrastructure and META FW support	2023-11-23 09:01:46 +01:00
pvr_fw_mips.c	drm/imagination: Implement MIPS firmware processor and MMU support	2023-11-23 09:01:46 +01:00
pvr_fw_mips.h	drm/imagination: Ensure PVR_MIPS_PT_PAGE_COUNT is never zero	2024-04-29 12:31:28 +01:00
pvr_fw_startstop.c	drm/imagination: Implement firmware infrastructure and META FW support	2023-11-23 09:01:46 +01:00
pvr_fw_startstop.h	drm/imagination: Implement firmware infrastructure and META FW support	2023-11-23 09:01:46 +01:00
pvr_fw_trace.c	drm/print: drop include debugfs.h and include where needed	2024-04-25 17:05:48 +03:00
pvr_fw_trace.h	drm/imagination: Implement firmware infrastructure and META FW support	2023-11-23 09:01:46 +01:00
pvr_fw.c	drm/imagination: Implement MIPS firmware processor and MMU support	2023-11-23 09:01:46 +01:00
pvr_fw.h	drm/imagination: Numerous documentation fixes.	2023-11-28 18:56:03 +01:00
pvr_gem.c	drm/imagination: Add GEM and VM related code	2023-11-23 09:01:46 +01:00
pvr_gem.h	drm/imagination: Add GEM and VM related code	2023-11-23 09:01:46 +01:00
pvr_hwrt.c	drm/imagination: Fixed oops when misusing ioctl CREATE_HWRT_DATASET	2023-12-15 14:04:08 +01:00
pvr_hwrt.h	drm/imagination: Numerous documentation fixes.	2023-11-28 18:56:03 +01:00
pvr_job.c	drm/exec: Pass in initial # of objects	2023-12-10 10:38:47 -08:00
pvr_job.h	drm/imagination: Implement job submission and scheduling	2023-11-23 09:01:47 +01:00
pvr_mmu.c	drm/imagination: Move dereference after NULL check in pvr_mmu_backing_page_init()	2023-12-08 10:25:24 +01:00
pvr_mmu.h	drm/imagination: Add GEM and VM related code	2023-11-23 09:01:46 +01:00
pvr_params.c	drm/imagination: Add firmware trace to debugfs	2023-11-23 09:01:47 +01:00
pvr_params.h	drm/imagination: Add firmware trace to debugfs	2023-11-23 09:01:47 +01:00
pvr_power.c	drm/imagination: Implement job submission and scheduling	2023-11-23 09:01:47 +01:00
pvr_power.h	drm/imagination: Implement firmware infrastructure and META FW support	2023-11-23 09:01:46 +01:00
pvr_queue.c	drm/scheduler: remove full_recover from drm_sched_start	2024-07-25 14:05:12 +02:00
pvr_queue.h	drm/imagination: Numerous documentation fixes.	2023-11-28 18:56:03 +01:00
pvr_rogue_cr_defs_client.h	drm/imagination: Add GPU register headers	2023-11-23 09:01:45 +01:00
pvr_rogue_cr_defs.h	drm/imagination: Add GPU register headers	2023-11-23 09:01:45 +01:00
pvr_rogue_defs.h	drm/imagination: Add GPU register headers	2023-11-23 09:01:45 +01:00
pvr_rogue_fwif_check.h	drm/imagination: Add FWIF headers	2023-11-23 09:01:46 +01:00
pvr_rogue_fwif_client_check.h	drm/imagination: Add FWIF headers	2023-11-23 09:01:46 +01:00
pvr_rogue_fwif_client.h	drm/imagination: Add FWIF headers	2023-11-23 09:01:46 +01:00
pvr_rogue_fwif_common.h	drm/imagination: Add FWIF headers	2023-11-23 09:01:46 +01:00
pvr_rogue_fwif_dev_info.h	drm/imagination: Add FWIF headers	2023-11-23 09:01:46 +01:00
pvr_rogue_fwif_resetframework.h	drm/imagination: Add FWIF headers	2023-11-23 09:01:46 +01:00
pvr_rogue_fwif_sf.h	drm/imagination: Fix a couple of spelling mistakes in literal strings	2023-11-28 13:55:37 +01:00
pvr_rogue_fwif_shared_check.h	drm/imagination: Add FWIF headers	2023-11-23 09:01:46 +01:00
pvr_rogue_fwif_shared.h	drm/imagination: Add FWIF headers	2023-11-23 09:01:46 +01:00
pvr_rogue_fwif_stream.h	drm/imagination: Add FWIF headers	2023-11-23 09:01:46 +01:00
pvr_rogue_fwif.h	drm/imagination: Add FWIF headers	2023-11-23 09:01:46 +01:00
pvr_rogue_heap_config.h	drm/imagination: Add firmware and MMU related headers	2023-11-23 09:01:45 +01:00
pvr_rogue_meta.h	drm/imagination: Add firmware and MMU related headers	2023-11-23 09:01:45 +01:00
pvr_rogue_mips_check.h	drm/imagination: Add firmware and MMU related headers	2023-11-23 09:01:45 +01:00
pvr_rogue_mips.h	drm/imagination: Add firmware and MMU related headers	2023-11-23 09:01:45 +01:00
pvr_rogue_mmu_defs.h	drm/imagination: Add firmware and MMU related headers	2023-11-23 09:01:45 +01:00
pvr_stream_defs.c	drm/imagination: Implement job submission and scheduling	2023-11-23 09:01:47 +01:00
pvr_stream_defs.h	drm/imagination: Implement context creation/destruction ioctls	2023-11-23 09:01:46 +01:00
pvr_stream.c	drm/imagination: Implement context creation/destruction ioctls	2023-11-23 09:01:46 +01:00
pvr_stream.h	drm/imagination: Implement context creation/destruction ioctls	2023-11-23 09:01:46 +01:00
pvr_sync.c	drm/imagination: Implement job submission and scheduling	2023-11-23 09:01:47 +01:00
pvr_sync.h	drm/imagination: Implement job submission and scheduling	2023-11-23 09:01:47 +01:00
pvr_vm_mips.c	The usual shower of singleton fixes and minor series all over MM,	2024-05-19 09:21:03 -07:00
pvr_vm_mips.h	drm/imagination: Implement MIPS firmware processor and MMU support	2023-11-23 09:01:46 +01:00
pvr_vm.c	drm/imagination: Break an object reference loop	2024-11-04 09:41:38 +00:00
pvr_vm.h	drm/imagination: Break an object reference loop	2024-11-04 09:41:38 +00:00