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OpenCloudOS-Kernel/drivers/gpu/drm/i915
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Chris Wilson a687a43a48 drm/i915: Force ringbuffers to not be at offset 0 
For reasons unknown Sandybridge GT1 (at least) will eventually hang when
it encounters a ring wraparound at offset 0. The test case that
reproduces the bug reliably forces a large number of interrupted context
switches, thereby causing very frequent ring wraparounds, but there are
similar bug reports in the wild with the same symptoms, seqno writes
stop just before the wrap and the ringbuffer at address 0. It is also
timing crucial, but adding various delays hasn't helped pinpoint where
the window lies.

Whether the fault is restricted to the ringbuffer itself or the GTT
addressing is unclear, but moving the ringbuffer fixes all the hangs I
have been able to reproduce.

References: (e.g.) https://bugs.freedesktop.org/show_bug.cgi?id=93262
Testcase: igt/gem_exec_whisper/render-contexts-interruptible #snb-gt1
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@vger.kernel.org
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1460565315-7748-12-git-send-email-chris@chris-wilson.co.uk
 		2016-04-14 10:45:40 +01:00
..
Kconfig drm/i915: Kconfig for extra driver debugging 2016-03-03 17:26:57 +00:00
Kconfig.debug drm/i915: Add GEM debugging Kconfig option 2016-04-14 10:45:40 +01:00
Makefile drm/i915: Force clean compilation with -Werror 2016-04-14 10:45:40 +01:00
dvo.h drm/i915: constify intel_dvo_dev_ops structures 2015-12-09 08:21:10 +01:00
dvo_ch7xxx.c drm/i915: constify intel_dvo_dev_ops structures 2015-12-09 08:21:10 +01:00
dvo_ch7017.c drm/i915: constify intel_dvo_dev_ops structures 2015-12-09 08:21:10 +01:00
dvo_ivch.c drm/i915: constify intel_dvo_dev_ops structures 2015-12-09 08:21:10 +01:00
dvo_ns2501.c drm/i915: constify intel_dvo_dev_ops structures 2015-12-09 08:21:10 +01:00
dvo_sil164.c drm/i915: constify intel_dvo_dev_ops structures 2015-12-09 08:21:10 +01:00
dvo_tfp410.c drm/i915: constify intel_dvo_dev_ops structures 2015-12-09 08:21:10 +01:00
i915_cmd_parser.c drm/i915: Bump command parser version for new whitelisted registers 2016-03-21 10:03:26 +01:00
i915_debugfs.c drm/i915: Tighten reset_counter for reset status 2016-04-14 10:45:40 +01:00
i915_dma.c Revert "drm/i915: Fix races on fbdev" 2016-04-01 15:03:55 +03:00
i915_drv.c drm/i915: Suppress error message when GPU resets are disabled 2016-04-14 10:45:40 +01:00
i915_drv.h drm/i915: Prevent leaking of -EIO from i915_wait_request() 2016-04-14 10:45:40 +01:00
i915_gem.c drm/i915: Prevent leaking of -EIO from i915_wait_request() 2016-04-14 10:45:40 +01:00
i915_gem.h drm/i915: Add GEM debugging Kconfig option 2016-04-14 10:45:40 +01:00
i915_gem_batch_pool.c
…
i915_gem_batch_pool.h
…
i915_gem_context.c drm/i915: Prevent machine death on Ivybridge context switching 2016-04-14 10:45:40 +01:00
i915_gem_debug.c drm/i915: replace for_each_engine() 2016-03-24 14:34:11 +00:00
i915_gem_dmabuf.c Linux 4.6-rc3 2016-04-11 19:25:13 +02:00
i915_gem_evict.c drm/i915: Rename vma->*_list to *_link for consistency 2016-02-26 13:15:39 +00:00
i915_gem_execbuffer.c drm,i915: Introduce drm_malloc_gfp() 2016-04-11 17:13:10 +01:00
i915_gem_fence.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2016-03-17 21:38:27 -07:00
i915_gem_gtt.c drm/i915: Store and use edram capabilities 2016-04-14 12:27:37 +03:00
i915_gem_gtt.h drm/i915: Refer to GGTT {,VM} consistently 2016-03-31 17:55:43 +03:00
i915_gem_render_state.c drm/i915: Rename intel_engine_cs struct members 2016-03-16 15:33:17 +00:00
i915_gem_render_state.h drm/i915: Rename intel_engine_cs function parameters 2016-03-16 15:33:10 +00:00
i915_gem_shrinker.c drm/i915/shrinker: Restrict vmap purge to objects with vmaps 2016-04-11 17:12:16 +01:00
i915_gem_stolen.c drm/i915: Refer to GGTT {,VM} consistently 2016-03-31 17:55:43 +03:00
i915_gem_tiling.c drm/i915: get runtime PM reference around GEM set_tiling IOCTL 2015-11-17 18:43:30 +02:00
i915_gem_userptr.c drm/i915: Prevent leaking of -EIO from i915_wait_request() 2016-04-14 10:45:40 +01:00
i915_gpu_error.c drm/i915: Separate out the seqno-barrier from engine->get_seqno 2016-04-09 12:09:05 +01:00
i915_guc_reg.h drm/i915/guc: always reset GuC before loading firmware 2016-04-05 13:29:24 +01:00
i915_guc_submission.c drm/i915: replace for_each_engine() 2016-03-24 14:34:11 +00:00
i915_ioc32.c Merge tag 'drm-intel-fixes-2015-07-15' into drm-intel-next-queued 2015-07-15 16:36:50 +02:00
i915_irq.c drm/i915: Tighten reset_counter for reset status 2016-04-14 10:45:40 +01:00
i915_params.c drm/i915: Add fault injection support 2016-03-17 15:22:09 +02:00
i915_params.h drm/i915: Add fault injection support 2016-03-17 15:22:09 +02:00
i915_reg.h drm/i915: Calculate edram size 2016-04-14 12:27:37 +03:00
i915_suspend.c drm/i915/bxt: Don't save/restore eDP panel power during suspend (v3) 2016-02-08 11:32:32 +02:00
i915_sysfs.c drm/i915: Hold RPM reference while setting freq limits through sysfs 2016-03-02 18:50:47 +02:00
i915_trace.h drm/i915: Separate out the seqno-barrier from engine->get_seqno 2016-04-09 12:09:05 +01:00
i915_trace_points.c
…
i915_vgpu.c drm/i915: Refer to GGTT {,VM} consistently 2016-03-31 17:55:43 +03:00
i915_vgpu.h drm/i915: Type safe register read/write 2015-11-18 15:39:11 +02:00
intel_acpi.c drm/i915: Drop unnecessary #include <linux/vga_switcheroo.h> 2015-10-13 10:18:38 +02:00
intel_atomic.c drm/i915: Remove some post-commit members from intel_crtc->atomic, v3. 2016-03-16 14:50:25 +01:00
intel_atomic_plane.c drm/i915: Pass the correct crtc state to .update_plane() 2016-03-10 13:49:31 +02:00
intel_audio.c drm/i915: Do not use {HAS_*, IS_*, INTEL_INFO}(dev_priv->dev) 2016-04-07 14:50:26 +03:00
intel_bios.c drm/i915: Get panel_type from OpRegion panel details 2016-04-12 13:23:43 +03:00
intel_bios.h drm/i915: hide away VBT private data in a separate header 2016-03-17 11:58:57 +02:00
intel_color.c drm/i915: Do not check crtc_state->active in intel_color_load_luts. 2016-03-31 12:46:07 +02:00
intel_crt.c drm/i915: Move HSW/BDW pll selection logic to intel_dpll_mgr.c 2016-03-09 11:55:31 +02:00
intel_csr.c drm/i915/csr: Allow matching unknown HW steppings with generic firmware 2016-03-16 17:53:00 +02:00
intel_ddi.c drm/i915/ddi: Silence compiler warning for unknown output type 2016-04-04 08:25:52 +01:00
intel_display.c drm/i915: Prevent leaking of -EIO from i915_wait_request() 2016-04-14 10:45:40 +01:00
intel_dp.c drm/i915: Replace ILK eDP underrun suppression with something better 2016-04-12 19:02:21 +03:00
intel_dp_link_training.c drm/i915/dp: reduce missing TPS3 support errors to debug logging 2016-02-08 11:37:17 +02:00
intel_dp_mst.c drm/i915: Fix race condition in intel_dp_destroy_mst_connector() 2016-03-17 09:12:28 +01:00
intel_dpll_mgr.c drm/i915/bxt: Reversed polarity of PORT_PLL_REF_SEL bit 2016-04-11 13:02:23 +03:00
intel_dpll_mgr.h drm/i915: Use a crtc mask instead of a refcount for dpll functions, v2. 2016-03-17 09:27:28 +01:00
intel_drv.h drm/i915: Use GPLL ref clock to calculate GPU freqs on VLV/CHV 2016-04-05 21:17:39 +03:00
intel_dsi.c drm/i915: Power down the DSI PLL before reconfiguring it 2016-04-12 21:11:51 +03:00
intel_dsi.h drm/i915: Sharing the pixel_format_from_vbt to whole i915 2016-04-07 16:46:06 +03:00
intel_dsi_panel_vbt.c drm/i915: Sharing the pixel_format_from_vbt to whole i915 2016-04-07 16:46:06 +03:00
intel_dsi_pll.c drm/i915: Fix CHV DSI PLL refclk during state readout 2016-04-12 21:12:02 +03:00
intel_dvo.c drm: Pass 'name' to drm_encoder_init() 2015-12-11 09:13:20 +01:00
intel_fbc.c drm/i915: Refer to GGTT {,VM} consistently 2016-03-31 17:55:43 +03:00
intel_fbdev.c Revert "drm/i915: Fix races on fbdev" 2016-04-01 15:03:55 +03:00
intel_fifo_underrun.c drm/i915: Do not use {HAS_*, IS_*, INTEL_INFO}(dev_priv->dev) 2016-04-07 14:50:26 +03:00
intel_frontbuffer.c drm/i915: fix FBC frontbuffer tracking flushing code 2015-08-05 09:59:44 +02:00
intel_guc.h drm/i915: Disentangle i915_drv.h includes 2016-04-14 10:45:40 +01:00
intel_guc_fwif.h drm/i915/guc: Decouple GuC engine id from ring id 2016-01-25 10:56:30 +00:00
intel_guc_loader.c drm/i915/guc: always reset GuC before loading firmware 2016-04-05 13:29:24 +01:00
intel_hdmi.c drm/i915: Do not use {HAS_*, IS_*, INTEL_INFO}(dev_priv->dev) 2016-04-07 14:50:26 +03:00
intel_hotplug.c drm/i915: intel_hpd_init(): Fix suspend/resume reprobing 2016-01-13 10:49:42 +02:00
intel_i2c.c drm/i915: Make GMBUS timeout message DRM_DEBUG_KMS 2016-04-12 13:23:17 +03:00
intel_lrc.c drm/i915: Prevent leaking of -EIO from i915_wait_request() 2016-04-14 10:45:40 +01:00
intel_lrc.h drm/i915: Disentangle i915_drv.h includes 2016-04-14 10:45:40 +01:00
intel_lvds.c drm/i915: fix deadlock on lid open 2016-03-30 12:17:13 +02:00
intel_mocs.c drm/i915: introduce for_each_engine_id() 2016-03-24 14:34:06 +00:00
intel_mocs.h drm/i915: Added Programming of the MOCS 2015-07-14 17:13:14 +02:00
intel_modes.c drm/i915: Add HDMI aspect ratio property for SDVO 2015-09-30 10:20:12 +02:00
intel_opregion.c drm/i915/opregion: remove unnecessary ifdefs on CONFIG_ACPI 2016-04-13 15:54:29 +03:00
intel_overlay.c drm/i915: Refer to GGTT {,VM} consistently 2016-03-31 17:55:43 +03:00
intel_panel.c drm/i915/panel: setup pwm backlight based on connector type 2016-03-16 18:28:50 +02:00
intel_pm.c drm/i915: Move vlv_init_display_clock_gating() to the display power well 2016-04-12 19:09:07 +03:00
intel_psr.c drm/i915: Do not use {HAS_*, IS_*, INTEL_INFO}(dev_priv->dev) 2016-04-07 14:50:26 +03:00
intel_renderstate.h
…
intel_renderstate_gen6.c
…
intel_renderstate_gen7.c
…
intel_renderstate_gen8.c
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intel_renderstate_gen9.c
…
intel_ringbuffer.c drm/i915: Force ringbuffers to not be at offset 0 2016-04-14 10:45:40 +01:00
intel_ringbuffer.h drm/i915: Only grab correct forcewake for the engine with execlists 2016-04-12 15:35:22 +01:00
intel_runtime_pm.c drm/i915: Move vlv_init_display_clock_gating() to the display power well 2016-04-12 19:09:07 +03:00
intel_sdvo.c drm/i915: move sdvo mappings to vbt data 2016-03-29 15:12:30 +03:00
intel_sdvo_regs.h drm/i915/sdvo: revert bogus kernel-doc comments to normal comments 2016-01-20 10:21:34 +02:00
intel_sideband.c drm/i915: Extend gpio read/write to other cores 2016-02-04 19:11:17 +02:00
intel_sprite.c drm/i915: Fix plane init failure paths 2016-04-01 23:24:21 +03:00
intel_tv.c drm/i915: move VBT based TV presence check to intel_bios.c 2016-03-16 18:28:07 +02:00
intel_uncore.c drm/i915: Calculate edram size 2016-04-14 12:27:37 +03:00
intel_vbt_defs.h drm/i915: Update VBT fields for child devices 2016-04-06 14:10:15 +03:00