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linux-stable/drivers/gpu/drm
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Chris Wilson bafb2f7d47 drm/i915/execlists: Reset RING registers upon resume 
There is a disparity in the context image saved to disk and our own
bookkeeping - that is we presume the RING_HEAD and RING_TAIL match our
stored ce->ring->tail value. However, as we emit WA_TAIL_DWORDS into the
ring but may not tell the GPU about them, the GPU may be lagging behind
our bookkeeping. Upon hibernation we do not save stolen pages, presuming
that their contents are volatile. This means that although we start
writing into the ring at tail, the GPU starts executing from its HEAD
and there may be some garbage in between and so the GPU promptly hangs
upon resume.

Testcase: igt/gem_exec_suspend/basic-S4
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96526
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20160921135108.29574-3-chris@chris-wilson.co.uk
2016-09-21 16:57:48 +01:00
..
amd Merge tag 'topic/drm-misc-2016-08-12' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-08-15 16:46:36 +10:00
arc drm/arc: Remove redundant dev_err call in arcpgu_load() 2016-07-19 15:33:50 -04:00
arm drm: BIT(DRM_ROTATE_?) -> DRM_ROTATE_? 2016-08-08 14:17:56 -04:00
armada drm: Remove superflous linux/fb.h includes 2016-08-12 10:41:39 +02:00
ast drm: Remove superflous linux/fb.h includes 2016-08-12 10:41:39 +02:00
atmel-hlcdc drm: BIT(DRM_ROTATE_?) -> DRM_ROTATE_? 2016-08-08 14:17:56 -04:00
bochs drm: Remove superflous linux/fb.h includes 2016-08-12 10:41:39 +02:00
bridge drm: Remove superflous linux/fb.h includes 2016-08-12 10:41:39 +02:00
cirrus Merge tag 'topic/drm-misc-2016-08-12' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-08-15 16:46:36 +10:00
etnaviv Merge tag 'drm-for-v4.8' of git://people.freedesktop.org/~airlied/linux 2016-08-01 21:44:08 -04:00
exynos Merge tag 'drm-for-v4.8-zpos' of git://people.freedesktop.org/~airlied/linux 2016-08-07 16:35:08 -07:00
fsl-dcu Merge tag 'topic/drm-misc-2016-07-22' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-07-27 10:33:08 +10:00
gma500 drm: Remove superflous linux/fb.h includes 2016-08-12 10:41:39 +02:00
hisilicon
i2c drm/i2c: adv7511: Move to bridge folder 2016-07-13 14:24:35 +05:30
i810 drm: Mark up legacy/dri1 drivers with DRM_LEGACY 2016-08-08 10:05:22 +02:00
i915 drm/i915/execlists: Reset RING registers upon resume 2016-09-21 16:57:48 +01:00
imx Merge tag 'topic/drm-misc-2016-08-12' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-08-15 16:46:36 +10:00
mediatek Merge tag 'topic/drm-misc-2016-08-12' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-08-15 16:46:36 +10:00
mga drm: Mark up legacy/dri1 drivers with DRM_LEGACY 2016-08-08 10:05:22 +02:00
mgag200 drm: Remove superflous linux/fb.h includes 2016-08-12 10:41:39 +02:00
msm drm: BIT(DRM_ROTATE_?) -> DRM_ROTATE_? 2016-08-08 14:17:56 -04:00
nouveau Merge tag 'topic/drm-misc-2016-08-12' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-08-15 16:46:36 +10:00
omapdrm Revert "gpu: drm: omapdrm: dss-of: add missing of_node_put after calling of_parse_phandle" 2016-08-12 07:10:37 -04:00
panel
qxl drm: Protect fb_defio in drivers with CONFIG_KMS_FBDEV_EMULATION 2016-08-12 10:42:00 +02:00
r128 drm: Mark up legacy/dri1 drivers with DRM_LEGACY 2016-08-08 10:05:22 +02:00
radeon Merge tag 'topic/drm-misc-2016-08-12' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-08-15 16:46:36 +10:00
rcar-du drm: rcar-du: Link HDMI encoder with bridge 2016-08-08 15:27:11 +10:00
rockchip drm/rockchip: Use drm_plane_helper_check_state() 2016-08-08 14:19:57 -04:00
savage drm: Mark up legacy/dri1 drivers with DRM_LEGACY 2016-08-08 10:05:22 +02:00
shmobile drm/shmobile: make fbdev support really optional 2016-07-18 09:11:37 +02:00
sis drm: Mark up legacy/dri1 drivers with DRM_LEGACY 2016-08-08 10:05:22 +02:00
sti Merge branch 'generic-zpos-v8' of http://git.linaro.org/people/benjamin.gaignard/kernel into drm-next 2016-08-03 08:40:24 +10:00
sun4i drm/fb-helper: Add a dummy remove_conflicting_framebuffers 2016-08-12 10:41:18 +02:00
tdfx drm: Mark up legacy/dri1 drivers with DRM_LEGACY 2016-08-08 10:05:22 +02:00
tegra Merge remote-tracking branch 'airlied/drm-next' into topic/drm-misc 2016-07-19 09:27:29 +02:00
tilcdc drm/tilcdc: Change tilcdc_crtc_page_flip() to tilcdc_crtc_update_fb() 2016-08-08 23:05:19 +03:00
ttm Merge branch 'drm-next-4.8' of git://people.freedesktop.org/~agd5f/linux into drm-next 2016-08-08 16:45:33 +10:00
udl drm: Protect fb_defio in drivers with CONFIG_KMS_FBDEV_EMULATION 2016-08-12 10:42:00 +02:00
vc4 drm/fb-helper: Add a dummy remove_conflicting_framebuffers 2016-08-12 10:41:18 +02:00
vgem drm/vgem: Fix non static symbol warning 2016-07-19 15:01:52 +02:00
via drm: Mark up legacy/dri1 drivers with DRM_LEGACY 2016-08-08 10:05:22 +02:00
virtio drm/fb-helper: Add a dummy remove_conflicting_framebuffers 2016-08-12 10:41:18 +02:00
vmwgfx drm/vmwgfx: select CONFIG_FB 2016-08-12 10:41:46 +02:00
ati_pcigart.c
drm_agpsupport.c drm: Used DRM_LEGACY for all legacy functions 2016-08-08 10:05:23 +02:00
drm_atomic.c drm: add generic zpos property 2016-07-29 09:59:30 +02:00
drm_atomic_helper.c Merge tag 'topic/drm-misc-2016-08-12' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-08-15 16:46:36 +10:00
drm_auth.c drm: Used DRM_LEGACY for all legacy functions 2016-08-08 10:05:23 +02:00
drm_blend.c drm: add generic zpos property 2016-07-29 09:59:30 +02:00
drm_bridge.c
drm_bufs.c drm: Used DRM_LEGACY for all legacy functions 2016-08-08 10:05:23 +02:00
drm_cache.c
drm_context.c drm: Used DRM_LEGACY for all legacy functions 2016-08-08 10:05:23 +02:00
drm_crtc.c Merge tag 'topic/drm-misc-2016-08-12' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-08-15 16:46:36 +10:00
drm_crtc_helper.c
drm_crtc_internal.h drm: add generic zpos property 2016-07-29 09:59:30 +02:00
drm_debugfs.c
drm_dma.c drm: Used DRM_LEGACY for all legacy functions 2016-08-08 10:05:23 +02:00
drm_dp_aux_dev.c
drm_dp_dual_mode_helper.c
drm_dp_helper.c drm: Fix DisplayPort branch device ID kernel-doc 2016-09-16 14:11:28 +03:00
drm_dp_mst_topology.c drm/dp-mst: Missing kernel doc 2016-07-19 10:31:53 +02:00
drm_drv.c drm: rename DRM_MINOR_LEGACY to DRM_MINOR_PRIMARY 2016-08-08 10:05:20 +02:00
drm_edid.c drm/edid: Set 8 bpc color depth for displays with "DFP 1.x compliant TMDS". 2016-08-09 08:56:04 +10:00
drm_edid_load.c
drm_encoder_slave.c
drm_fb_cma_helper.c
drm_fb_helper.c drm: Remove superflous linux/fb.h includes 2016-08-12 10:41:39 +02:00
drm_flip_work.c
drm_fops.c drm: Used DRM_LEGACY for all legacy functions 2016-08-08 10:05:23 +02:00
drm_fourcc.c
drm_gem.c Merge tag 'drm-for-v4.8' of git://people.freedesktop.org/~airlied/linux 2016-08-01 21:44:08 -04:00
drm_gem_cma_helper.c
drm_global.c
drm_hashtab.c
drm_info.c
drm_internal.h
drm_ioc32.c
drm_ioctl.c drm: Used DRM_LEGACY for all legacy functions 2016-08-08 10:05:23 +02:00
drm_irq.c drm: Make sure drm_vblank_no_hw_counter isn't abused 2016-08-08 14:34:05 -04:00
drm_kms_helper_common.c
drm_legacy.h
drm_lock.c drm: Used DRM_LEGACY for all legacy functions 2016-08-08 10:05:23 +02:00
drm_memory.c
drm_mipi_dsi.c
drm_mm.c drm: Declare that create drm_mm nodes with size 0 is illegal 2016-08-08 10:05:21 +02:00
drm_modes.c drm/imx: convey the pixelclk-active and de-active flags from DT to the ipu-di driver 2016-08-08 11:44:20 +02:00
drm_modeset_lock.c
drm_of.c
drm_panel.c
drm_pci.c drm: Used DRM_LEGACY for all legacy functions 2016-08-08 10:05:23 +02:00
drm_plane_helper.c drm/plane-helper: Add drm_plane_helper_check_state() 2016-08-08 14:19:45 -04:00
drm_platform.c
drm_prime.c
drm_probe_helper.c
drm_rect.c drm: Warn about negative sizes when calculating scale factor 2016-08-08 14:17:56 -04:00
drm_scatter.c drm: Used DRM_LEGACY for all legacy functions 2016-08-08 10:05:23 +02:00
drm_simple_kms_helper.c drm/simple_kms_helper: Use drm_plane_helper_check_state() 2016-08-08 14:19:58 -04:00
drm_sysfs.c
drm_trace.h
drm_trace_points.c
drm_vm.c
drm_vma_manager.c drm: Convert drm_vma_manager to embedded interval-tree in drm_mm 2016-08-08 10:05:17 +02:00
Kconfig drm/radeon|amgpu: Make fbdev emulation optional 2016-08-12 10:41:53 +02:00
Makefile drm/i915: Use remap_io_mapping() to prefault all PTE in a single pass 2016-08-19 17:13:36 +01:00