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linux/drivers/gpu/drm/i915
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Chris Wilson b016cd6ed4 dma-buf: Restore seqlock around dma_resv updates 
This reverts
67c97fb79a7f ("dma-buf: add reservation_object_fences helper")
dd7a7d1ff2f1 ("drm/i915: use new reservation_object_fences helper")
0e1d8083bddb ("dma-buf: further relax reservation_object_add_shared_fence")
5d344f58da76 ("dma-buf: nuke reservation_object seq number")

The scenario that defeats simply grabbing a set of shared/exclusive
fences and using them blissfully under RCU is that any of those fences
may be reallocated by a SLAB_TYPESAFE_BY_RCU fence slab cache. In this
scenario, while keeping the rcu_read_lock we need to establish that no
fence was changed in the dma_resv after a read (or full) memory barrier.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190814182401.25009-1-chris@chris-wilson.co.uk
2019-08-16 12:40:58 +01:00
..
display
dma-buf: rename reservation_object to dma_resv
2019-08-13 09:09:30 +02:00
gem
dma-buf: Restore seqlock around dma_resv updates
2019-08-16 12:40:58 +01:00
gt
Features:
2019-06-21 14:00:10 +10:00
gvt
Linus 5.3-rc1
2019-07-22 21:24:10 +02:00
selftests
drm/i915: Fix up broken merge
2019-07-22 23:43:15 +02:00
i915_active_types.h
drm/i915: Keep contexts pinned until after the next kernel context switch
2019-06-14 19:03:32 +01:00
i915_active.c
drm/i915: Keep engine alive as we retire the context
2019-06-18 15:14:22 +01:00
i915_active.h
drm/i915: Stop passing I915_WAIT_LOCKED to i915_request_wait()
2019-06-19 12:58:38 +01:00
i915_cmd_parser.c
drm/i915: Move GEM object domain management from struct_mutex to local
2019-05-28 12:45:29 +01:00
i915_debugfs.c
drm/i915: no need to check return value of debugfs_create functions
2019-06-17 15:53:08 +03:00
i915_debugfs.h
drm/i915: extract i915_debugfs.h from i915_drv.h
2019-05-03 10:06:40 +03:00
i915_drv.c
Linus 5.3-rc1
2019-07-22 21:24:10 +02:00
i915_drv.h
dma-buf: rename reservation_object to dma_resv
2019-08-13 09:09:30 +02:00
i915_fixed.h
drm/i915: Use mul_u32_u32() more
2019-05-03 20:09:51 +03:00
i915_gem_batch_pool.c
dma-buf: rename reservation_object to dma_resv
2019-08-13 09:09:30 +02:00
i915_gem_batch_pool.h
drm/i915: Split GEM object type definition to its own header
2019-05-28 12:45:29 +01:00
i915_gem_evict.c
drm/i915: Move more GEM objects under gem/
2019-05-28 12:45:29 +01:00
i915_gem_fence_reg.c
drm/i915: make intel_wakeref work on the rpm struct
2019-06-14 15:58:33 +01:00
i915_gem_fence_reg.h
drm/i915: Move fence register tracking from i915->mm to ggtt
2019-06-13 09:37:39 +01:00
i915_gem_gtt.c
drm/i915/gtt: Serialise both updates to PDE and our shadow
2019-06-17 20:53:03 +01:00
i915_gem_gtt.h
drm/i915/gtt: Use a common type for page directories
2019-06-17 16:30:54 +03:00
i915_gem_render_state.c
drm/i915: Drop the deferred active reference
2019-05-28 12:45:29 +01:00
i915_gem_render_state.h
…
i915_gem.c
dma-buf: rename reservation_object to dma_resv
2019-08-13 09:09:30 +02:00
i915_gem.h
drm/i915: Load balancing across a virtual engine
2019-05-22 08:40:38 +01:00
i915_globals.c
drm/i915: Move more GEM objects under gem/
2019-05-28 12:45:29 +01:00
i915_globals.h
drm/i915: Move over to intel_context_lookup()
2019-03-08 13:59:52 +00:00
i915_gpu_error.c
drm/i915: move modesetting core code under display/
2019-06-17 11:48:32 +03:00
i915_gpu_error.h
drm/i915: Invert the GEM wakeref hierarchy
2019-04-24 22:26:49 +01:00
i915_ioc32.c
…
i915_irq.c
drm/i915/ehl: Introduce Mule Creek Canyon PCH
2019-06-17 13:40:20 -07:00
i915_irq.h
drm/i915/guc: Correctly handle GuC interrupts on Gen11
2019-05-28 10:07:17 +01:00
i915_memcpy.c
…
i915_mm.c
mm/pgtable: drop pgtable_t variable from pte_fn_t functions
2019-07-12 11:05:46 -07:00
i915_oa_bdw.c
…
i915_oa_bdw.h
…
i915_oa_bxt.c
…
i915_oa_bxt.h
…
i915_oa_cflgt2.c
…
i915_oa_cflgt2.h
…
i915_oa_cflgt3.c
…
i915_oa_cflgt3.h
…
i915_oa_chv.c
…
i915_oa_chv.h
…
i915_oa_cnl.c
…
i915_oa_cnl.h
…
i915_oa_glk.c
…
i915_oa_glk.h
…
i915_oa_hsw.c
…
i915_oa_hsw.h
…
i915_oa_icl.c
…
i915_oa_icl.h
…
i915_oa_kblgt2.c
…
i915_oa_kblgt2.h
…
i915_oa_kblgt3.c
…
i915_oa_kblgt3.h
…
i915_oa_sklgt2.c
…
i915_oa_sklgt2.h
…
i915_oa_sklgt3.c
…
i915_oa_sklgt3.h
…
i915_oa_sklgt4.c
…
i915_oa_sklgt4.h
…
i915_params.c
drm/i915: add force_probe module parameter to replace alpha_support
2019-05-31 16:20:30 +03:00
i915_params.h
drm/i915: add force_probe module parameter to replace alpha_support
2019-05-31 16:20:30 +03:00
i915_pci.c
drm/i915: move modesetting core code under display/
2019-06-17 11:48:32 +03:00
i915_perf.c
proc/sysctl: add shared variables for range check
2019-07-18 17:08:07 -07:00
i915_pmu.c
drm/i915: update with_intel_runtime_pm to use the rpm structure
2019-06-14 15:58:33 +01:00
i915_pmu.h
Merge back earlier PM core material for v5.1.
2019-02-24 21:20:27 +01:00
i915_priolist_types.h
drm/i915: Downgrade NEWCLIENT to non-preemptive
2019-05-20 18:28:22 +03:00
i915_pvinfo.h
drm/i915: Mark up vGPU support for full-ppgtt
2019-03-15 09:04:54 +00:00
i915_query.c
Revert "drm/i915: Expand subslice mask"
2019-05-29 17:18:18 +03:00
i915_query.h
…
i915_reg.h
Features:
2019-06-21 14:00:10 +10:00
i915_request.c
dma-buf: rename reservation_object to dma_resv
2019-08-13 09:09:30 +02:00
i915_request.h
drm/i915: Replace engine->timeline with a plain list
2019-06-14 19:03:40 +01:00
i915_scatterlist.c
drm/i915: Pull scatterlist utils out of i915_gem.h
2019-05-28 12:45:29 +01:00
i915_scatterlist.h
drm/i915: Pull scatterlist utils out of i915_gem.h
2019-05-28 12:45:29 +01:00
i915_scheduler_types.h
drm/i915: Bump signaler priority on adding a waiter
2019-05-20 18:28:04 +03:00
i915_scheduler.c
drm/i915: Replace engine->timeline with a plain list
2019-06-14 19:03:40 +01:00
i915_scheduler.h
drm/i915: Only reschedule the submission tasklet if preemption is possible
2019-05-07 17:40:20 +01:00
i915_selftest.h
…
i915_suspend.c
drm/i915: move modesetting core code under display/
2019-06-17 11:48:32 +03:00
i915_sw_fence.c
dma-buf: rename reservation_object to dma_resv
2019-08-13 09:09:30 +02:00
i915_sw_fence.h
dma-buf: rename reservation_object to dma_resv
2019-08-13 09:09:30 +02:00
i915_syncmap.c
…
i915_syncmap.h
…
i915_sysfs.c
drm/i915: update with_intel_runtime_pm to use the rpm structure
2019-06-14 15:58:33 +01:00
i915_timeline_types.h
drm/i915: Replace engine->timeline with a plain list
2019-06-14 19:03:40 +01:00
i915_timeline.c
drm/i915: Replace engine->timeline with a plain list
2019-06-14 19:03:40 +01:00
i915_timeline.h
drm/i915: Replace engine->timeline with a plain list
2019-06-14 19:03:40 +01:00
i915_trace_points.c
…
i915_trace.h
drm/i915: Stop passing I915_WAIT_LOCKED to i915_request_wait()
2019-06-19 12:58:38 +01:00
i915_user_extensions.c
drm/i915: Introduce the i915_user_extension_method
2019-03-22 13:12:30 +00:00
i915_user_extensions.h
drm/i915: Introduce the i915_user_extension_method
2019-03-22 13:12:30 +00:00
i915_utils.h
drm/i915: Move GEM object waiting to its own file
2019-05-28 12:45:29 +01:00
i915_vgpu.c
drm/i915: rename raw reg access functions
2019-03-26 19:15:15 +00:00
i915_vgpu.h
drm/i915: Mark up vGPU support for full-ppgtt
2019-03-15 09:04:54 +00:00
i915_vma.c
dma-buf: rename reservation_object to dma_resv
2019-08-13 09:09:30 +02:00
i915_vma.h
dma-buf: rename reservation_object to dma_resv
2019-08-13 09:09:30 +02:00
intel_csr.c
Linux 5.2-rc5
2019-06-19 12:07:29 +02:00
intel_csr.h
drm/i915/csr: move CSR version macros to intel_csr.h
2019-05-03 10:06:25 +03:00
intel_device_info.c
drm/i915: Kill INTEL_SUBPLATFORM_AML
2019-06-12 14:51:26 +03:00
intel_device_info.h
drm/i915: move modesetting core code under display/
2019-06-17 11:48:32 +03:00
intel_drv.h
Linux 5.2-rc5
2019-06-19 12:07:29 +02:00
intel_guc_ads.c
drm/i915/guc: Reset GuC ADS during sanitize
2019-05-28 10:07:05 +01:00
intel_guc_ads.h
drm/i915/guc: Reset GuC ADS during sanitize
2019-05-28 10:07:05 +01:00
intel_guc_ct.c
drm/i915/guc: always use Command Transport Buffers
2019-06-09 11:21:33 +01:00
intel_guc_ct.h
drm/i915/uc: Stop talking with GuC when resetting
2019-05-23 21:58:36 +01:00
intel_guc_fw.c
drm/i915/guc: Define GuC firmware version for Icelake
2019-05-28 10:07:22 +01:00
intel_guc_fw.h
…
intel_guc_fwif.h
drm/i915: fix documentation build warnings
2019-06-06 11:13:20 +03:00
intel_guc_log.c
drm/i915/guc: Reduce verbosity on log overflows
2019-06-18 11:35:19 +01:00
intel_guc_log.h
…
intel_guc_reg.h
drm/i915/guc: Correctly handle GuC interrupts on Gen11
2019-05-28 10:07:17 +01:00
intel_guc_submission.c
drm/i915: Replace engine->timeline with a plain list
2019-06-14 19:03:40 +01:00
intel_guc_submission.h
drm/i915: Move GraphicsTechnology files under gt/
2019-04-24 21:01:46 +01:00
intel_guc.c
drm/i915: Make GuC GGTT reservation work on ggtt
2019-06-11 14:40:15 +01:00
intel_guc.h
drm/i915: Make GuC GGTT reservation work on ggtt
2019-06-11 14:40:15 +01:00
intel_gvt.c
…
intel_gvt.h
…
intel_huc_fw.c
drm/i915/huc: Define HuC firmware version for Icelake
2019-05-28 10:07:23 +01:00
intel_huc_fw.h
…
intel_huc.c
drm/i915: update with_intel_runtime_pm to use the rpm structure
2019-06-14 15:58:33 +01:00
intel_huc.h
drm/i915/huc: New HuC status register for Gen11
2019-05-28 10:07:13 +01:00
intel_pm.c
drm/i915: move modesetting core code under display/
2019-06-17 11:48:32 +03:00
intel_pm.h
drm/i915: move pm related declarations to intel_pm.h
2019-06-10 10:29:17 +03:00
intel_renderstate_gen6.c
…
intel_renderstate_gen7.c
…
intel_renderstate_gen8.c
…
intel_renderstate_gen9.c
…
intel_renderstate.h
…
intel_runtime_pm.c
drm/i915: update rpm_get/put to use the rpm structure
2019-06-14 15:58:33 +01:00
intel_runtime_pm.h
pci-v5.3-changes
2019-07-15 20:44:49 -07:00
intel_sideband.c
drm/i915: Make sandybridge_pcode_read() deal with the second data register
2019-05-27 20:51:48 +03:00
intel_sideband.h
drm/i915: Make sandybridge_pcode_read() deal with the second data register
2019-05-27 20:51:48 +03:00
intel_uc_fw.c
drm/i915: Move GEM object domain management from struct_mutex to local
2019-05-28 12:45:29 +01:00
intel_uc_fw.h
drm/i915/uc: Place uC firmware in upper range of GGTT
2019-04-20 08:19:32 +01:00
intel_uc.c
drm/i915: update with_intel_runtime_pm to use the rpm structure
2019-06-14 15:58:33 +01:00
intel_uc.h
drm/i915/guc: Fix runtime suspend
2019-05-03 08:38:37 +01:00
intel_uncore.c
drm/i915: update with_intel_runtime_pm to use the rpm structure
2019-06-14 15:58:33 +01:00
intel_uncore.h
drm/i915: move and rename i915_runtime_pm
2019-06-14 15:58:33 +01:00
intel_wakeref.c
drm/i915: make intel_wakeref work on the rpm struct
2019-06-14 15:58:33 +01:00
intel_wakeref.h
drm/i915: make intel_wakeref work on the rpm struct
2019-06-14 15:58:33 +01:00
intel_wopcm.c
drm/i915/wopcm: update default size for gen11+
2019-06-09 11:28:32 +01:00
intel_wopcm.h
drm/i915/guc: Move intel_guc_reserved_gtt_size to intel_wopcm_guc_size
2019-06-11 14:40:14 +01:00
Kconfig
drm/i915: add force_probe module parameter to replace alpha_support
2019-05-31 16:20:30 +03:00
Kconfig.debug
drm/i915: Enable refcount debugging for default debug levels
2019-06-14 12:16:08 +01:00
Kconfig.profile
drm/i915: Add a label for config DRM_I915_SPIN_REQUEST
2019-06-12 11:18:55 +01:00
Makefile
drm/i915: move modesetting core code under display/
2019-06-17 11:48:32 +03:00
Makefile.header-test
drm main pull request for v5.3-rc1 (sans mm changes)
2019-07-15 19:04:27 -07:00