Chris Wilson 0b1570b7ff drm/i915: Protect i915_request_await_start from early waits ... We need to be extremely careful inside i915_request_await_start() as it needs to walk the list of requests in the foreign timeline with very little protection. As we hold our own timeline mutex, we can not nest inside the signaler's timeline mutex, so all that remains is our RCU protection. However, to be safe we need to tell the compiler that we may be traversing the list only under RCU protection, and furthermore we need to start declaring requests as elements of the timeline from their construction. Fixes: 9ddc8ec027 ("drm/i915: Eliminate the trylock for awaiting an earlier request") Fixes: 6a79d84840 ("drm/i915: Lock signaler timeline while navigating") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200227085723.1961649-11-chris@chris-wilson.co.uk (cherry picked from commit d22d2d073e) Signed-off-by: Jani Nikula <jani.nikula@intel.com>		2020-03-02 12:10:46 +02:00
..
display	drm/i915/tgl: Add Wa_22010178259:tgl	2020-03-02 10:48:56 +02:00
gem	drm/i915/gem: Break up long lists of object reclaim	2020-03-02 10:24:34 +02:00
gt	drm/i915/tgl: Add Wa_1608008084	2020-03-02 12:10:12 +02:00
gvt	Merge tag 'gvt-fixes-2020-02-26' of https://github.com/intel/gvt-linux into drm-intel-fixes	2020-02-26 22:58:25 +02:00
oa	drm/i915: reimplement header test feature	2020-01-02 12:24:10 +02:00
selftests	drm/i915: Add missing include file <linux/math64.h>	2020-01-13 13:43:50 +02:00
.gitignore	drm/i915: reimplement header test feature	2020-01-02 12:24:10 +02:00
i915_active.c	drm/i915: Fix preallocated barrier list append	2020-02-12 13:24:45 +02:00
i915_active.h	drm/i915/gt: Acquire ce->active before ce->pin_count/ce->pin_mutex	2020-02-12 13:24:45 +02:00
i915_active_types.h	drm/i915: Serialise i915_active_fence_set() with itself	2019-11-27 17:02:14 +00:00
i915_buddy.c	drn/i915: Break up long i915_buddy_free_list() with a cond_resched()	2019-12-30 12:10:38 +00:00
i915_buddy.h
i915_cmd_parser.c	Correct function name in comment	2019-12-16 23:13:12 +00:00
i915_debugfs.c	drm/i915: Pass intel_encoder to enc_to_*()	2020-01-13 20:10:51 +02:00
i915_debugfs.h
i915_drv.c	drm/i915/psr: Force PSR probe only after full initialization	2020-03-02 10:46:25 +02:00
i915_drv.h	drm/i915/psr: Force PSR probe only after full initialization	2020-03-02 10:46:25 +02:00
i915_fixed.h
i915_gem.c	drm/i915: Wean off drm_pci_alloc/drm_pci_free	2020-02-18 09:52:54 +02:00
i915_gem.h	i915 features for v5.6:	2019-12-27 15:25:04 +10:00
i915_gem_evict.c	drm/i915: Ignore most failures during evict-vm	2019-12-05 13:50:39 +00:00
i915_gem_fence_reg.c	drm/i915: Early return for no-op i915_vma_pin_fence()	2020-01-09 08:53:15 +00:00
i915_gem_fence_reg.h
i915_gem_gtt.c	ioremap changes for 5.6	2020-01-27 13:03:00 -08:00
i915_gem_gtt.h	drm/i915/gtt: split up i915_gem_gtt	2020-01-07 19:27:36 +00:00
i915_getparam.c	drm/i915: Introduce DRM_I915_GEM_MMAP_OFFSET	2019-12-04 15:11:44 +00:00
i915_globals.c	drm/i915: Ratelimit i915_globals_park	2019-12-18 17:38:56 +00:00
i915_globals.h
i915_gpu_error.c	drm/i915: Update drm/i915 bug filing URL	2020-02-17 21:16:45 +02:00
i915_gpu_error.h	drm/i915: Stub out i915_gpu_coredump_put	2020-02-12 13:24:34 +02:00
i915_ioc32.c
i915_irq.c	drm/i915: prefer 3-letter acronym for ivybridge	2019-12-28 13:38:08 -08:00
i915_irq.h
i915_memcpy.c	drm/i915: Align start for memcpy_from_wc	2019-12-11 22:40:41 +00:00
i915_memcpy.h	drm/i915: Align start for memcpy_from_wc	2019-12-11 22:40:41 +00:00
i915_mm.c	drm/i915/gem: Extend mmap support for lmem	2020-01-04 17:57:46 +00:00
i915_params.c
i915_params.h
i915_pci.c	drm/i915/gtt: Downgrade gen7 (ivb, byt, hsw) back to aliasing-ppgtt	2020-02-26 14:04:28 +02:00
i915_perf.c	drm/i915: Pin the context as we work on it	2020-01-09 12:50:26 +00:00
i915_perf.h	drm/i915/perf: Register sysctl path globally	2019-12-13 20:16:23 +00:00
i915_perf_types.h	drm/i915/perf: Register sysctl path globally	2019-12-13 20:16:23 +00:00
i915_pmu.c	drm/i915/pmu: Avoid using globals for PMU events	2020-02-26 14:07:50 +02:00
i915_pmu.h	drm/i915/pmu: Avoid using globals for PMU events	2020-02-26 14:07:50 +02:00
i915_priolist_types.h
i915_pvinfo.h
i915_query.c	drm/i915/query: Align flavour of engine data lookup	2019-11-25 15:08:24 +02:00
i915_query.h
i915_reg.h	drm/i915/tgl: Add Wa_22010178259:tgl	2020-03-02 10:48:56 +02:00
i915_request.c	drm/i915: Protect i915_request_await_start from early waits	2020-03-02 12:10:46 +02:00
i915_request.h	drm/i915/gt: Allow temporary suspension of inflight requests	2020-02-12 16:55:58 +02:00
i915_scatterlist.c
i915_scatterlist.h
i915_scheduler.c	drm/i915/gt: Protect defer_request() from new waiters	2020-02-17 21:24:19 +02:00
i915_scheduler.h	drm/i915: Use a ctor for TYPESAFE_BY_RCU i915_request	2019-11-22 10:47:38 +00:00
i915_scheduler_types.h
i915_selftest.h
i915_suspend.c
i915_suspend.h
i915_sw_fence.c	drm/i915: Propagate errors on awaiting already signaled dma-fences	2019-12-06 19:09:46 +00:00
i915_sw_fence.h	drm/i915: Check for error before calling cmpxchg()	2019-12-06 19:09:33 +00:00
i915_sw_fence_work.c	drm/i915: Unpin vma->obj on early error	2019-12-18 10:13:03 +00:00
i915_sw_fence_work.h
i915_switcheroo.c
i915_switcheroo.h
i915_syncmap.c
i915_syncmap.h
i915_sysfs.c	drm/i915: Start chopping up the GPU error capture	2020-01-10 15:34:33 +00:00
i915_sysfs.h
i915_trace.h	drm/i915: Rename pipe update tracepoints	2019-12-19 22:29:58 +02:00
i915_trace_points.c
i915_user_extensions.c
i915_user_extensions.h
i915_utils.c	drm/i915: Update drm/i915 bug filing URL	2020-02-17 21:16:45 +02:00
i915_utils.h	drm/i915: Improve i915_inject_probe_error macro	2019-12-12 12:35:17 +00:00
i915_vgpu.c
i915_vgpu.h
i915_vma.c	drm/i915: Check activity on i915_vma after confirming pin_count==0	2020-02-11 11:49:51 +02:00
i915_vma.h	drm/i915/gtt: split up i915_gem_gtt	2020-01-07 19:27:36 +00:00
i915_vma_types.h	drm/i915/gtt: split up i915_gem_gtt	2020-01-07 19:27:36 +00:00
intel_csr.c
intel_csr.h
intel_device_info.c	drm/i915/tgl: Assume future platforms will inherit TGL's SFC capability	2019-12-31 09:37:35 -08:00
intel_device_info.h	drm/i915: Flesh out device_info pretty printer	2019-12-09 09:58:51 +00:00
intel_gvt.c
intel_gvt.h
intel_memory_region.c	drm/i915: lookup for mem_region of a mem_type	2020-01-05 01:08:09 +00:00
intel_memory_region.h	drm/i915: lookup for mem_region of a mem_type	2020-01-05 01:08:09 +00:00
intel_pch.c	drm/i915/pch: convert to using the drm_dbg_kms() macro.	2020-01-10 16:10:35 +02:00
intel_pch.h
intel_pm.c	drm/i915/pm: use new struct drm_device logging macros.	2020-01-10 16:10:56 +02:00
intel_pm.h	drm/i915: Pass dev_priv to ilk_disable_lp_wm()	2019-12-04 15:37:30 +02:00
intel_region_lmem.c	drm/i915/lmem: use new struct drm_device based logging macros.	2020-01-10 16:11:04 +02:00
intel_region_lmem.h
intel_runtime_pm.c
intel_runtime_pm.h
intel_sideband.c	drm/i915/sideband: convert to using new struct drm_device logging macros	2020-01-10 16:11:48 +02:00
intel_sideband.h
intel_uncore.c	drm/i915/uncore: use new struct drm_device based macros.	2020-01-10 16:12:25 +02:00
intel_uncore.h
intel_wakeref.c	drm/i915/gt: Flush ongoing retires during wait_for_idle	2020-01-03 00:33:07 +00:00
intel_wakeref.h	drm/i915/gt: Flush ongoing retires during wait_for_idle	2020-01-03 00:33:07 +00:00
intel_wopcm.c
intel_wopcm.h
Kconfig	drm/i915: Update drm/i915 bug filing URL	2020-02-17 21:16:45 +02:00
Kconfig.debug	Merge drm/drm-next into drm-intel-next-queued	2019-12-11 11:13:50 +02:00
Kconfig.profile	drm/i915: Default to a more lenient forced preemption timeout	2019-11-27 10:12:14 +02:00
Kconfig.unstable
Makefile	drm/i915: fix header test with GCOV	2020-02-26 14:04:28 +02:00