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51bc140431
linux_dsm_epyc7002/drivers/gpu/drm/i915
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Chris Wilson 51bc140431 drm/i915: Always mark the object as dirty when used by the GPU 
There have been many hard to track down bugs whereby userspace forgot to
flag a write buffer and then cause graphics corruption or a hung GPU
when that buffer was later purged under memory pressure (as the buffer
appeared clean, its pages would have been evicted rather than preserved
and any changes more recent than in the backing storage would be lost).
In retrospect this is a rare optimisation against memory pressure,
already the slow path. If we always mark the buffer as dirty when
accessed by the GPU, anything not used can still be evicted cheaply
(ideal behaviour for mark-and-sweep eviction) but we do not run the risk
of corruption. For correct read serialisation, userspace still has to
notify when the GPU writes to an object. However, there are certain
situations under which userspace may wish to tell white lies to the
kernel...

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Kristian Høgsberg <krh@bitplanet.net>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: "Goel, Akash" <akash.goel@intel.co>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-09-02 16:21:53 +03:00
..
dvo_ch7xxx.c
dvo_ch7017.c
dvo_ivch.c
dvo_ns2501.c
dvo_sil164.c
dvo_tfp410.c
dvo.h
i915_cmd_parser.c drm/i915: Fix command parser table validator 2015-07-29 10:31:04 +02:00
i915_debugfs.c drm/i915/skl: Adding DDI_E power well domain 2015-08-31 18:40:48 +03:00
i915_dma.c drm/i915: Fake AGP is dead 2015-07-28 13:30:00 +02:00
i915_drv.c drm/i915: apply the PCI_D0/D3 hibernation workaround everywhere on pre GEN6 2015-08-31 18:18:51 +03:00
i915_drv.h drm/i915/skl: Adding DDI_E power well domain 2015-08-31 18:40:48 +03:00
i915_gem_batch_pool.c
i915_gem_batch_pool.h
i915_gem_context.c drm/i915: Remove the failed context from the fpriv->context_idr 2015-08-14 17:50:41 +02:00
i915_gem_debug.c
i915_gem_dmabuf.c drm/i915: remove unused has_dma_mapping flag 2015-07-13 22:42:41 +02:00
i915_gem_evict.c
i915_gem_execbuffer.c drm/i915: Always mark the object as dirty when used by the GPU 2015-09-02 16:21:53 +03:00
i915_gem_fence.c drm/i915: kerneldoc for tiling IOCTL and swizzle functions 2015-07-27 10:26:30 +02:00
i915_gem_gtt.c Linux 4.2-rc7 2015-08-17 14:13:53 +10:00
i915_gem_gtt.h drm/i915/gtt: Move scratch_pd and scratch_pt into vm struct 2015-06-26 11:06:30 +02:00
i915_gem_render_state.c drm/i915: Add provision to extend Golden context batch 2015-07-21 09:30:57 +02:00
i915_gem_render_state.h drm/i915: Add provision to extend Golden context batch 2015-07-21 09:30:57 +02:00
i915_gem_shrinker.c
i915_gem_stolen.c drm/i915: Fix build warning on 32-bit 2015-08-26 10:15:36 +03:00
i915_gem_tiling.c Merge tag 'drm-intel-fixes-2015-08-14' into drm-intel-next-fixes 2015-08-14 18:11:30 +02:00
i915_gem_userptr.c drm/i915: avoid leaking DMA mappings 2015-07-13 22:42:40 +02:00
i915_gem.c drm/i915: Keep the mm.bound_list in rough LRU order 2015-07-28 16:05:41 +02:00
i915_gpu_error.c drm/i915: Report IOMMU enabled status for GPU hangs 2015-08-14 17:50:41 +02:00
i915_guc_reg.h drm/i915: Add GuC-related header files 2015-07-21 08:38:00 +02:00
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/skl: enable DDI-E hotplug 2015-08-26 10:24:25 +03:00
i915_params.c drm/i915: Add GuC-related module parameters 2015-07-21 08:37:35 +02:00
i915_reg.h drm/i915/skl: enable DDI-E hotplug 2015-08-26 10:24:25 +03:00
i915_suspend.c drm/i915: use dev_priv for the FBC functions 2015-07-08 11:39:45 +02:00
i915_sysfs.c
i915_trace_points.c
i915_trace.h Merge tag 'drm-intel-fixes-2015-07-15' into drm-intel-next-queued 2015-07-15 16:36:50 +02:00
i915_vgpu.c
i915_vgpu.h
intel_acpi.c
intel_atomic_plane.c
intel_atomic.c drm/i915: Commit planes on each crtc separately. 2015-08-13 12:09:18 +03:00
intel_audio.c Merge tag 'drm-intel-fixes-2015-07-15' into drm-intel-next-queued 2015-07-15 16:36:50 +02:00
intel_bios.c drm/i915/skl: Enable DDI-E 2015-08-31 18:28:09 +03:00
intel_bios.h drm/i915: eDP can be present on DDI-E 2015-08-31 18:36:38 +03:00
intel_crt.c drm/i915: Get rid of dpms handling. 2015-08-14 17:50:33 +02:00
intel_csr.c drm/i915/gen9: Removed byte swapping for csr firmware 2015-08-05 11:00:04 +02:00
intel_ddi.c drm/i915: Don't use link_bw for PLL setup 2015-09-01 12:31:44 +03:00
intel_display.c drm/i915: Preserve SSC earlier 2015-09-01 09:38:49 +03:00
intel_dp_mst.c i915: Set ddi_pll_sel in DP MST path 2015-09-01 12:42:27 +03:00
intel_dp.c i915: Set ddi_pll_sel in DP MST path 2015-09-01 12:42:27 +03:00
intel_drv.h i915: Set ddi_pll_sel in DP MST path 2015-09-01 12:42:27 +03:00
intel_dsi_panel_vbt.c
intel_dsi_pll.c drm/i915: Changes required to enable DSI Video Mode on CHT 2015-07-03 07:39:02 +02:00
intel_dsi.c drm/i915: Get rid of dpms handling. 2015-08-14 17:50:33 +02:00
intel_dsi.h drm/i915: Use the CRC gpio for panel enable/disable 2015-07-21 09:22:43 +02:00
intel_dvo.c drm/i915: Get rid of dpms handling. 2015-08-14 17:50:33 +02:00
intel_fbc.c drm/i915: fix FBC frontbuffer tracking flushing code 2015-08-05 09:59:44 +02:00
intel_fbdev.c drm/i915: Use new drm_fb_helper functions 2015-08-06 14:13:05 +02:00
intel_fifo_underrun.c
intel_frontbuffer.c drm/i915: fix FBC frontbuffer tracking flushing code 2015-08-05 09:59:44 +02:00
intel_guc_fwif.h drm/i915: Add GuC-related header files 2015-07-21 08:38:00 +02:00
intel_hdmi.c drm/i915: Enable HDMI on DDI-E 2015-08-31 18:27:02 +03:00
intel_hotplug.c drm/i915/skl: enable DDI-E hotplug 2015-08-26 10:24:25 +03:00
intel_i2c.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-06-26 13:18:51 -07:00
intel_lrc.c Linux 4.2-rc8 2015-08-24 16:36:42 +10:00
intel_lrc.h drm/i915: Added Programming of the MOCS 2015-07-14 17:13:14 +02:00
intel_lvds.c drm/i915: Get rid of dpms handling. 2015-08-14 17:50:33 +02:00
intel_mocs.c drm/i915: Added Programming of the MOCS 2015-07-14 17:13:14 +02:00
intel_mocs.h drm/i915: Added Programming of the MOCS 2015-07-14 17:13:14 +02:00
intel_modes.c
intel_opregion.c Merge tag 'drm-intel-fixes-2015-07-15' into drm-intel-next-queued 2015-07-15 16:36:50 +02:00
intel_overlay.c
intel_panel.c drm/i915: Backlight control using CRC PMIC based PWM driver 2015-07-21 09:22:48 +02:00
intel_pm.c Merge tag 'topic/drm-misc-2015-07-28' into drm-intel-next-queued 2015-08-06 14:27:09 +02:00
intel_psr.c drm/i915: VLV/CHV PSR: Increase wait delay time before active PSR. 2015-08-05 10:07:44 +02:00
intel_renderstate_gen6.c
intel_renderstate_gen7.c
intel_renderstate_gen8.c
intel_renderstate_gen9.c
intel_renderstate.h
intel_ringbuffer.c drm/i915: Contain the WA_REG macro 2015-08-14 17:50:42 +02:00
intel_ringbuffer.h Merge tag 'drm-intel-fixes-2015-07-15' into drm-intel-next-queued 2015-07-15 16:36:50 +02:00
intel_runtime_pm.c drm/i915/skl: Adding DDI_E power well domain 2015-08-31 18:40:48 +03:00
intel_sdvo_regs.h
intel_sdvo.c drm/i915: Get rid of dpms handling. 2015-08-14 17:50:33 +02:00
intel_sideband.c
intel_sprite.c drm/i915: always disable irqs in intel_pipe_update_start 2015-07-15 15:06:02 +02:00
intel_tv.c drm/i915: Get rid of dpms handling. 2015-08-14 17:50:33 +02:00
intel_uncore.c Linux 4.2-rc7 2015-08-17 14:13:53 +10:00
Kconfig drm/i915: Use CONFIG_DRM_FBDEV_EMULATION 2015-08-11 14:00:29 +02:00
Makefile Merge tag 'drm-intel-next-fixes-2015-08-16' of git://anongit.freedesktop.org/drm-intel into drm-next 2015-08-17 14:14:44 +10:00