leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
07ccd6bdaf
linux/drivers/gpu/drm/i915
History
Chris Wilson 07ccd6bdaf drm/i915/gem: Store mmap_offsets in an rbtree rather than a plain list 
Currently we create a new mmap_offset for every call to
mmap_offset_ioctl. This exposes ourselves to an abusive client that may
simply create new mmap_offsets ad infinitum, which will exhaust physical
memory and the virtual address space. In addition to the exhaustion, a
very long linear list of mmap_offsets causes other clients using the
object to incur long list walks -- these long lists can also be
generated by simply having many clients generate their own mmap_offset.

However, we can simply use the drm_vma_node itself to manage the file
association (allow/revoke) dropping our need to keep an mmo per-file.
Then if we keep a small rbtree of per-type mmap_offsets, we can lookup
duplicate requests quickly.

Fixes: cc662126b4 ("drm/i915: Introduce DRM_I915_GEM_MMAP_OFFSET")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Reviewed-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200120104924.4000706-3-chris@chris-wilson.co.uk
(cherry picked from commit 7865559872)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2020-02-11 11:49:31 +02:00
..
display drm/i915: Make a copy of the ggtt view for slave plane 2020-02-10 14:45:31 +02:00
gem drm/i915/gem: Store mmap_offsets in an rbtree rather than a plain list 2020-02-11 11:49:31 +02:00
gt drm/i915/execlists: Leave resetting ring to intel_ring 2020-02-11 11:49:16 +02:00
gvt Linux 5.5-rc7 2020-01-20 11:42:57 +10:00
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_types.h drm/i915: Serialise i915_active_fence_set() with itself 2019-11-27 17:02:14 +00:00
i915_active.c drm/i915/gt: Drop mutex serialisation between context pin/unpin 2020-01-06 14:38:57 +00:00
i915_active.h drm/i915: Specialise i915_active.work lock classes 2019-12-02 21:57:23 +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 Merge drm/drm-next into drm-intel-next-queued 2020-01-09 17:19:12 +02:00
i915_drv.h drm/i915: Update DRIVER_DATE to 20200114 2020-01-14 13:39:38 +02:00
i915_fixed.h
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 drm/i915/gt: Skip trying to unbind in restore_ggtt_mappings 2020-01-13 14:17:55 +02:00
i915_gem_gtt.h drm/i915/gtt: split up i915_gem_gtt 2020-01-07 19:27:36 +00:00
i915_gem.c drm/i915: Create dumb buffer from LMEM 2020-01-05 01:09:18 +00:00
i915_gem.h i915 features for v5.6: 2019-12-27 15:25:04 +10:00
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: Drop request list from error state 2020-01-10 15:34:33 +00:00
i915_gpu_error.h drm/i915: Fix i915_error_state_store error defination 2020-02-09 19:23:31 +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 drm/i915: Extract the GuC interrupt handlers 2019-10-26 19:28:59 +01:00
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 drm/i915/lmem: add the fake lmem region 2019-10-31 20:41:47 +00:00
i915_params.h drm/i915/lmem: add the fake lmem region 2019-10-31 20:41:47 +00:00
i915_pci.c drm/i915: simplify prefixes on device_info 2019-12-28 13:37:56 -08:00
i915_perf_types.h drm/i915/perf: Register sysctl path globally 2019-12-13 20:16:23 +00:00
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_pmu.c drm/i915/pmu: Correct the rc6 offset upon enabling 2020-02-10 14:45:19 +02:00
i915_pmu.h drm/i915/pmu: Ensure monotonic rc6 2019-12-23 14:17:22 +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/display/icl+: Do not program clockgating 2020-01-08 08:32:48 -08:00
i915_request.c drm/i915: Merge i915_request.flags with i915_request.fence.flags 2020-01-06 14:38:55 +00:00
i915_request.h drm/i915: Merge i915_request.flags with i915_request.fence.flags 2020-01-06 14:38:55 +00:00
i915_scatterlist.c
i915_scatterlist.h
i915_scheduler_types.h
i915_scheduler.c drm/i915: Drop GEM context as a direct link from i915_request 2019-12-20 10:52:21 +00:00
i915_scheduler.h drm/i915: Use a ctor for TYPESAFE_BY_RCU i915_request 2019-11-22 10:47:38 +00:00
i915_selftest.h drm/i915/selftests: Perform some basic cycle counting of MI ops 2019-11-11 18:30:13 +00:00
i915_suspend.c
i915_suspend.h
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_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_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_points.c
i915_trace.h drm/i915: Rename pipe update tracepoints 2019-12-19 22:29:58 +02:00
i915_user_extensions.c
i915_user_extensions.h
i915_utils.c drm-misc-next for v5.6: 2019-12-17 13:57:54 +01:00
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_types.h drm/i915/gtt: split up i915_gem_gtt 2020-01-07 19:27:36 +00:00
i915_vma.c drm/i915/gt: Hold rpm wakeref before taking ggtt->vm.mutex 2020-01-10 20:30:40 +00:00
i915_vma.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 drm/i915: Fix detection for a CMP-V PCH 2019-11-18 16:36:03 +02:00
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 drm/i915/lmem: add the fake lmem region 2019-10-31 20:41:47 +00:00
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: Put future HW and their uAPIs under STAGING & BROKEN 2019-10-27 15:47:10 +00:00
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 drm/i915/lmem: add the fake lmem region 2019-10-31 20:41:47 +00:00
Makefile drm/i915/gtt: split up i915_gem_gtt 2020-01-07 19:27:36 +00:00