Tvrtko Ursulin 7938d61591 drm/i915: Flush TLBs before releasing backing store ... We need to flush TLBs before releasing backing store otherwise userspace is able to encounter stale entries if a) it is not declaring access to certain buffers and b) it races with the backing store release from a such undeclared execution already executing on the GPU in parallel. The approach taken is to mark any buffer objects which were ever bound to the GPU and to trigger a serialized TLB flush when their backing store is released. Alternatively the flushing could be done on VMA unbind, at which point we would be able to ascertain whether there is potential a parallel GPU execution (which could race), but essentially it boils down to paying the cost of TLB flushes potentially needlessly at VMA unbind time (when the backing store is not known to be going away so not needed for safety), versus potentially needlessly at backing store relase time (since we at that point cannot tell whether there is anything executing on the GPU which uses that object). Thereforce simplicity of implementation has been chosen for now with scope to benchmark and refine later as required. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reported-by: Sushma Venkatesh Reddy <sushma.venkatesh.reddy@intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Dave Airlie <airlied@redhat.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Jon Bloomfield <jon.bloomfield@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Jani Nikula <jani.nikula@intel.com> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2022-01-25 20:06:06 +02:00
..
display	drm/i915/display/adlp: Implement new step in the TC voltage swing prog sequence	2022-01-17 10:19:41 +00:00
gem	drm/i915: Flush TLBs before releasing backing store	2022-01-25 20:06:06 +02:00
gt	drm/i915: Flush TLBs before releasing backing store	2022-01-25 20:06:06 +02:00
gvt	Merge tag 'drm-intel-gt-next-2021-12-23' of git://anongit.freedesktop.org/drm/drm-intel into drm-next	2021-12-24 06:14:51 +10:00
pxp	drm/i915/pxp: Hold RPM wakelock during PXP unbind	2022-01-10 13:54:53 +00:00
selftests	drm/i915: Ensure i915_vma tests do not get -ENOSPC with the locking changes.	2021-12-20 16:34:20 +01:00
.gitignore
i915_active.c	drm/i915: Remove unused bits of i915_vma/active api	2021-12-20 16:26:09 +01:00
i915_active.h	drm/i915: Remove unused bits of i915_vma/active api	2021-12-20 16:26:09 +01:00
i915_active_types.h	drm/i915/active: remove useless i915_utils.h include	2021-12-13 12:04:44 +02:00
i915_buddy.c	drm/i915/buddy: add some pretty printing	2021-08-20 09:40:22 +01:00
i915_buddy.h	drm/i915/buddy: add some pretty printing	2021-08-20 09:40:22 +01:00
i915_cmd_parser.c
i915_config.c	drm/i915: remove IS_ACTIVE	2021-10-07 11:04:05 -07:00
i915_debugfs.c	Merge tag 'drm-intel-gt-next-2021-12-23' of git://anongit.freedesktop.org/drm/drm-intel into drm-next	2021-12-24 06:14:51 +10:00
i915_debugfs.h
i915_debugfs_params.c	drm/i915: Use to_gt() helper	2021-12-17 21:51:59 -08:00
i915_debugfs_params.h
i915_deps.c	drm/i915: Break out the i915_deps utility	2021-12-22 08:52:57 +01:00
i915_deps.h	drm/i915: Break out the i915_deps utility	2021-12-22 08:52:57 +01:00
i915_driver.c	Merge tag 'drm-intel-gt-next-2021-12-23' of git://anongit.freedesktop.org/drm/drm-intel into drm-next	2021-12-24 06:14:51 +10:00
i915_driver.h	drm/i915/driver: add i915_driver_ prefix to functions	2021-11-17 11:47:55 +02:00
i915_drv.h	Merge tag 'drm-intel-gt-next-2021-12-23' of git://anongit.freedesktop.org/drm/drm-intel into drm-next	2021-12-24 06:14:51 +10:00
i915_fixed.h
i915_gem.c	drm/i915: Force ww lock for i915_gem_object_ggtt_pin_ww, v2.	2021-12-20 16:33:03 +01:00
i915_gem.h
i915_gem_evict.c
i915_gem_gtt.c	drm/i915: Use direction definition DMA_BIDIRECTIONAL instead of PCI_DMA_BIDIRECTIONAL	2021-09-30 16:19:45 +02:00
i915_gem_gtt.h
i915_gem_ww.c
i915_gem_ww.h	drm/i915: Ditch the i915_gem_ww_ctx loop member	2021-08-20 09:39:41 +01:00
i915_getparam.c	drm/i915: Use to_gt() helper	2021-12-17 21:51:59 -08:00
i915_gpu_error.c	drm/i915: Use to_gt() helper	2021-12-17 21:51:59 -08:00
i915_gpu_error.h	drm/i915: Avoid allocating a page array for the gpu coredump	2021-11-26 08:26:08 +01:00
i915_ioc32.c
i915_ioc32.h
i915_iosf_mbi.h	drm/i915: abstraction for iosf to compile on all archs	2021-10-27 00:32:01 -07:00
i915_irq.c	Merge tag 'drm-intel-gt-next-2021-12-23' of git://anongit.freedesktop.org/drm/drm-intel into drm-next	2021-12-24 06:14:51 +10:00
i915_irq.h	drm/i915/irq: reduce inlines to reduce header dependencies	2021-08-20 10:28:31 +03:00
i915_memcpy.c
i915_memcpy.h
i915_mitigations.c
i915_mitigations.h
i915_mm.c	drm/i915: Skip remap_io_mapping() for non-x86 platforms	2021-12-08 13:26:14 -08:00
i915_mm.h	drm/i915: Skip remap_io_mapping() for non-x86 platforms	2021-12-08 13:26:14 -08:00
i915_module.c	drm-misc-next for 5.17:	2021-12-09 09:31:45 +01:00
i915_params.c	drm/i915: Test all device memory on probing	2021-12-14 15:08:20 +05:30
i915_params.h	drm/i915: Test all device memory on probing	2021-12-14 15:08:20 +05:30
i915_pci.c	Merge tag 'drm-intel-gt-next-2021-12-23' of git://anongit.freedesktop.org/drm/drm-intel into drm-next	2021-12-24 06:14:51 +10:00
i915_pci.h	drm/i915/pci: rename functions to have i915_pci prefix	2021-08-26 10:50:19 +03:00
i915_perf.c	i915: simplify subdirectory registration with register_sysctl()	2022-01-22 08:33:34 +02:00
i915_perf.h
i915_perf_types.h
i915_pmu.c	drm/i915: Use to_gt() helper	2021-12-17 21:51:59 -08:00
i915_pmu.h
i915_priolist_types.h
i915_pvinfo.h
i915_query.c	drm/i915: Use to_gt() helper	2021-12-17 21:51:59 -08:00
i915_query.h
i915_reg.h	drm/i915: Flush TLBs before releasing backing store	2022-01-25 20:06:06 +02:00
i915_request.c	Merge tag 'drm-intel-gt-next-2021-12-23' of git://anongit.freedesktop.org/drm/drm-intel into drm-next	2021-12-24 06:14:51 +10:00
i915_request.h	drm/i915: Avoid using the i915_fence_array when collecting dependencies	2021-12-22 08:14:30 +01:00
i915_scatterlist.c	drm/i915: Introduce refcounted sg-tables	2021-11-01 18:10:49 +01:00
i915_scatterlist.h	drm/i915: Introduce refcounted sg-tables	2021-11-01 18:10:49 +01:00
i915_scheduler.c
i915_scheduler.h
i915_scheduler_types.h
i915_selftest.h
i915_suspend.c
i915_suspend.h
i915_sw_fence.c	drm/i915: Drop stealing of bits from i915_sw_fence function pointer	2021-11-30 17:52:15 -08:00
i915_sw_fence.h	drm/i915: Drop stealing of bits from i915_sw_fence function pointer	2021-11-30 17:52:15 -08:00
i915_sw_fence_work.c	drm/i915: Drop stealing of bits from i915_sw_fence function pointer	2021-11-30 17:52:15 -08:00
i915_sw_fence_work.h
i915_switcheroo.c	drm/i915/driver: add i915_driver_ prefix to functions	2021-11-17 11:47:55 +02:00
i915_switcheroo.h
i915_syncmap.c
i915_syncmap.h
i915_sysfs.c	drm/i915: Use to_gt() helper	2021-12-17 21:51:59 -08:00
i915_sysfs.h
i915_trace.h	drm/i915/trace: split out display trace to a separate file	2021-12-09 11:21:46 +02:00
i915_trace_points.c
i915_ttm_buddy_manager.c	drm/i915/buddy: add some pretty printing	2021-08-20 09:40:22 +01:00
i915_ttm_buddy_manager.h
i915_user_extensions.c
i915_user_extensions.h
i915_utils.c
i915_utils.h	drm for 5.16-rc1	2021-11-02 16:47:49 -07:00
i915_vgpu.c
i915_vgpu.h
i915_vma.c	drm/i915: Flush TLBs before releasing backing store	2022-01-25 20:06:06 +02:00
i915_vma.h	drm/i915: Remove pages_mutex and intel_gtt->vma_ops.set/clear_pages members, v3.	2021-12-20 16:31:02 +01:00
i915_vma_snapshot.c	drm/i915: Update error capture code to avoid using the current vma state	2021-12-01 16:53:22 +01:00
i915_vma_snapshot.h	drm/i915: Update error capture code to avoid using the current vma state	2021-12-01 16:53:22 +01:00
i915_vma_types.h	Merge tag 'drm-intel-gt-next-2021-12-23' of git://anongit.freedesktop.org/drm/drm-intel into drm-next	2021-12-24 06:14:51 +10:00
intel_device_info.c	Merge tag 'drm-intel-next-2021-12-14' of ssh://git.freedesktop.org/git/drm/drm-intel into drm-next	2021-12-17 15:23:49 +10:00
intel_device_info.h	Merge tag 'drm-intel-gt-next-2021-12-23' of git://anongit.freedesktop.org/drm/drm-intel into drm-next	2021-12-24 06:14:51 +10:00
intel_dram.c	drm/i915: Remove memory frequency calculation	2021-10-19 10:45:52 +03:00
intel_dram.h
intel_gvt.c	drm/i915: Use to_gt() helper	2021-12-17 21:51:59 -08:00
intel_gvt.h
intel_memory_region.c	drm/i915: Test all device memory on probing	2021-12-14 15:08:20 +05:30
intel_memory_region.h	drm/i915/ttm: Drop region reference counting	2021-11-25 09:36:16 +01:00
intel_pch.c	drm/i915/rpl-s: Add PCH Support for Raptor Lake S	2021-12-08 13:03:04 -08:00
intel_pch.h	drm/i915/rpl-s: Add PCH Support for Raptor Lake S	2021-12-08 13:03:04 -08:00
intel_pcode.c	drm/i915: split out intel_pcode.[ch] to separate file	2021-10-14 18:04:17 +03:00
intel_pcode.h	drm/i915: split out intel_pcode.[ch] to separate file	2021-10-14 18:04:17 +03:00
intel_pm.c	Merge tag 'drm-intel-next-2021-12-14' of ssh://git.freedesktop.org/git/drm/drm-intel into drm-next	2021-12-17 15:23:49 +10:00
intel_pm.h	drm/i915/wm: provide wrappers around watermark vfuncs calls (v3)	2021-09-29 08:53:57 +03:00
intel_pm_types.h	drm/i915: split out intel_pm_types.h	2021-12-03 11:28:12 +02:00
intel_region_ttm.c	drm/i915/ttm: Drop region reference counting	2021-11-25 09:36:16 +01:00
intel_region_ttm.h	drm/i915/ttm: Drop region reference counting	2021-11-25 09:36:16 +01:00
intel_runtime_pm.c	lib/stackdepot: allow optional init and stack_table allocation by kvmalloc()	2022-01-22 08:33:37 +02:00
intel_runtime_pm.h	drm/i915: intel_runtime_pm.h does not actually need intel_display.h	2021-08-20 10:28:49 +03:00
intel_sbi.c	drm/i915: rename intel_sideband.[ch] to intel_sbi.[ch]	2021-10-14 18:05:04 +03:00
intel_sbi.h	drm/i915: rename intel_sideband.[ch] to intel_sbi.[ch]	2021-10-14 18:05:04 +03:00
intel_step.c	drm/i915: Rename GT_STEP to GRAPHICS_STEP	2021-11-02 13:05:40 -07:00
intel_step.h	drm/i915: Rename GT_STEP to GRAPHICS_STEP	2021-11-02 13:05:40 -07:00
intel_uncore.c	drm/i915: Flush TLBs before releasing backing store	2022-01-25 20:06:06 +02:00
intel_uncore.h	drm/i915: Flush TLBs before releasing backing store	2022-01-25 20:06:06 +02:00
intel_wakeref.c
intel_wakeref.h	drm/i915/guc: Take engine PM when a context is pinned with GuC submission	2021-10-15 10:37:26 -07:00
intel_wopcm.c	drm/i915: Use to_gt() helper	2021-12-17 21:51:59 -08:00
intel_wopcm.h
Kconfig	Merge drm/drm-next into drm-intel-next	2021-11-22 17:35:32 +02:00
Kconfig.debug
Kconfig.profile
Kconfig.unstable
Makefile	Merge tag 'drm-intel-gt-next-2021-12-23' of git://anongit.freedesktop.org/drm/drm-intel into drm-next	2021-12-24 06:14:51 +10:00
TODO.txt
vlv_sideband.c	drm/i915: abstraction for iosf to compile on all archs	2021-10-27 00:32:01 -07:00
vlv_sideband.h	drm/i915: split out vlv sideband to a separate file	2021-10-14 12:22:55 +03:00
vlv_suspend.c
vlv_suspend.h