dri-devel February 2020

dri-devel@lists.freedesktop.org

302 participants
679 discussions

Re: mmotm 2020-02-19-19-51 uploaded (gpu/drm/i915/ + HDRTEST)
by Randy Dunlap 21 Feb '20

21 Feb '20

On 2/19/20 7:51 PM, akpm(a)linux-foundation.org wrote: > The mm-of-the-moment snapshot 2020-02-19-19-51 has been uploaded to > > http://www.ozlabs.org/~akpm/mmotm/ > > mmotm-readme.txt says > > README for mm-of-the-moment: > > http://www.ozlabs.org/~akpm/mmotm/ > > This is a snapshot of my -mm patch queue. Uploaded at random hopefully > more than once a week. > on x86_64: when GCOV is set/enabled: HDRTEST drivers/gpu/drm/i915/display/intel_frontbuffer.h /dev/null:1:0: error: cannot open /dev/null.gcno HDRTEST drivers/gpu/drm/i915/display/intel_ddi.h /dev/null:1:0: error: cannot open /dev/null.gcno make[5]: *** [../drivers/gpu/drm/i915/Makefile:307: drivers/gpu/drm/i915/display/intel_ddi.hdrtest] Error 1 make[5]: *** Waiting for unfinished jobs.... make[5]: *** [../drivers/gpu/drm/i915/Makefile:307: drivers/gpu/drm/i915/display/intel_frontbuffer.hdrtest] Error 1 Full randconfig file is attached. -- ~Randy Reported-by: Randy Dunlap <rdunlap(a)infradead.org>

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[PULL] drm-misc-next
by Maxime Ripard 21 Feb '20

21 Feb '20

Hi Dave, Daniel, Here's a new round of drm-misc-next patches. Thanks! Maxime drm-misc-next-2020-02-21: drm-misc-next for 5.7: UAPI Changes: Cross-subsystem Changes: Core Changes: - crtc: Drop get_crtc callback - dp: Add support for DP1.4 EDID corruption test - edid: Improve CEA detailed timings support - format-helper: Move to a GPL2/MIT dual license - mode: Drop drm_display_mode.private - vblank: Convert drm-driver vblank related code to CRTC equivalents and cleanup the core. - drm_global_mutex reworks Driver Changes: - hibmc: Add gamma_set support and improve DPMS support - pl111: Support Integrator IM-PD1 - sun4i: LVDS support for the A20, improvements to panel handling in DSI - virtio: job batching improvements, mem handling code rework - panel: Support for Rocktech RK101II01D-CT - bridge: Support for ADV7535, tc358768, improvements to ti-sn65dsi86 The following changes since commit 11a48a5a18c63fd7621bb050228cebf13566e4d8: Linux 5.6-rc2 (2020-02-16 13:16:59 -0800) are available in the Git repository at: git://anongit.freedesktop.org/drm/drm-misc tags/drm-misc-next-2020-02-21 for you to fetch changes up to d718e53a48f7bcfa6cdd0c00d5ed1fb516595446: drm/sun4i: tcon: Support LVDS output on Allwinner A20 (2020-02-20 18:25:36 +0100) ---------------------------------------------------------------- drm-misc-next for 5.7: UAPI Changes: Cross-subsystem Changes: Core Changes: - crtc: Drop get_crtc callback - dp: Add support for DP1.4 EDID corruption test - edid: Improve CEA detailed timings support - format-helper: Move to a GPL2/MIT dual license - mode: Drop drm_display_mode.private - vblank: Convert drm-driver vblank related code to CRTC equivalents and cleanup the core. - drm_global_mutex reworks Driver Changes: - hibmc: Add gamma_set support and improve DPMS support - pl111: Support Integrator IM-PD1 - sun4i: LVDS support for the A20, improvements to panel handling in DSI - virtio: job batching improvements, mem handling code rework - panel: Support for Rocktech RK101II01D-CT - bridge: Support for ADV7535, tc358768, improvements to ti-sn65dsi86 ---------------------------------------------------------------- Andrey Lebedev (4): drm/sun4i: tcon: Introduce LVDS setup routine setting dt-bindings: display: sun4i: New compatibles for A20 tcons drm/sun4i: tcon: Separate quirks for tcon0 and tcon1 on A20 drm/sun4i: tcon: Support LVDS output on Allwinner A20 Bogdan Togorean (3): drm: bridge: adv7511: Remove DRM_I2C_ADV7533 Kconfig drm: bridge: adv7511: Add support for ADV7535 dt-bindings: drm: bridge: adv7511: Add ADV7535 support Boris Brezillon (1): drm/bridge: Fix the bridge kernel doc Christian König (6): drm/ttm: refine ghost BO resv criteria drm/ttm: cleanup ttm_buffer_object_transfer drm/ttm: use RCU in ttm_bo_flush_all_fences drm/ttm: rework BO delayed delete. v2 drm/ttm: replace dma_resv object on deleted BOs v3 drm/ttm: individualize resv objects before calling release_notify Christophe JAILLET (1): dma-buf: Fix a typo in Kconfig Daniel Vetter (6): drm/fbdev-helper: don't force restores drm/client: Rename _force to _locked drm: Push drm_global_mutex locking in drm_open drm: Nerf drm_global_mutex BKL for good drivers drm/print: Delete a few unused shouting macros drm/atomic-helper: fix kerneldoc Douglas Anderson (9): drm/bridge: ti-sn65dsi86: Split the setting of the dp and dsi rates drm/bridge: ti-sn65dsi86: zero is never greater than an unsigned int drm/bridge: ti-sn65dsi86: Don't use MIPI variables for DP link drm/bridge: ti-sn65dsi86: Config number of DP lanes Mo' Betta drm/bridge: ti-sn65dsi86: Read num lanes from the DP sink drm/bridge: ti-sn65dsi86: Use 18-bit DP if we can drm/bridge: ti-sn65dsi86: Group DP link training bits in a function drm/bridge: ti-sn65dsi86: Train at faster rates if slower ones fail drm/bridge: ti-sn65dsi86: Avoid invalid rates Emmanuel Vadot (1): drm/format_helper: Dual licence the file in GPL 2 and MIT Enric Balletbo i Serra (1): drm/bridge: panel: Fix typo in drm_panel_bridge_add docs Gerd Hoffmann (19): drm/bochs: deinit bugfix drm/virtio: simplify virtio_gpu_alloc_cmd drm/virtio: resource teardown tweaks drm/virtio: move mapping teardown to virtio_gpu_cleanup_object() drm/virtio: move virtio_gpu_mem_entry initialization to new function drm/qxl: reorder calls in qxl_device_fini(). drm/qxl: add drm_driver.release callback. drm/bochs: add drm_driver.release callback. drm/cirrus: add drm_driver.release callback. drm/virtio: add drm_driver.release callback. drm/virtio: fix virtio_gpu_execbuffer_ioctl locking drm/virtio: fix virtio_gpu_cursor_plane_update(). drm/virtio: fix error check drm/virtio: rework notification for better batching drm/virtio: notify before waiting drm/virtio: batch plane updates (pageflip) drm/virtio: batch resource creation drm/virtio: batch display query drm/virtio: move remaining virtio_gpu_notify calls Gustavo A. R. Silva (1): drm/qxl: replace zero-length array with flexible-array member Jani Nikula (1): drm/irq: remove check on dev->dev_private Jerry (Fangzhi) Zuo (1): drm: Add support for DP 1.4 Compliance edid corruption test Jonathan Neuschäfer (1): drm/mcde: Fix Sphinx formatting Jyri Sarha (3): drm/bridge: sii902x: Select SND_SOC_HDMI_CODEC if SND_SOC is configured dt-bindings: panel-simple: Add rocktech,rk101ii01d-ct compatible drm/panel: simple: Add Rocktech RK101II01D-CT panel Kieran Bingham (1): drm/omapdrm: Fix trivial spelling Linus Walleij (1): drm/pl111: Support Integrator IM-PD1 module Maxime Ripard (1): Merge v5.6-rc2 into drm-misc-next Peter Ujfalusi (4): dt-bindings: display: bridge: Add documentation for Toshiba tc358768 drm/bridge: Add tc358768 driver drm/omap: dmm_tiler: Use dmaengine_prep_dma_memcpy() for i878 workaround drm/omap: dmm_tiler: Remove the dma_async_issue_pending() call Sam Ravnborg (3): drm/print: clean up RATELIMITED macros drm: drop unused drm_crtc callback drm: drop unused drm_display_mode.private Samuel Holland (5): drm/sun4i: dsi: Remove unused drv from driver context drm/sun4i: dsi: Use NULL to signify "no panel" drm/sun4i: dsi: Allow binding the host without a panel drm/sun4i: dsi: Remove incorrect use of runtime PM drm/sun4i: dsi: Avoid hotplug race with DRM driver bind Thomas Zimmermann (22): drm: Remove internal setup of struct drm_device.vblank_disable_immediate drm: Add get_scanout_position() to struct drm_crtc_helper_funcs drm: Add get_vblank_timestamp() to struct drm_crtc_funcs drm/amdgpu: Convert to struct drm_crtc_helper_funcs.get_scanout_position() drm/amdgpu: Convert to CRTC VBLANK callbacks drm/gma500: Convert to CRTC VBLANK callbacks drm/i915: Convert to CRTC VBLANK callbacks drm/nouveau: Convert to struct drm_crtc_helper_funcs.get_scanout_position() drm/nouveau: Convert to CRTC VBLANK callbacks drm/radeon: Convert to struct drm_crtc_helper_funcs.get_scanout_position() drm/radeon: Convert to CRTC VBLANK callbacks drm/msm: Convert to struct drm_crtc_helper_funcs.get_scanout_position() drm/msm: Convert to CRTC VBLANK callbacks drm/stm: Convert to struct drm_crtc_helper_funcs.get_scanout_position() drm/stm: Convert to CRTC VBLANK callbacks drm/sti: Convert to CRTC VBLANK callbacks drm/vc4: Convert to struct drm_crtc_helper_funcs.get_scanout_position() drm/vc4: Convert to CRTC VBLANK callbacks drm/vkms: Convert to CRTC VBLANK callbacks drm/vmwgfx: Convert to CRTC VBLANK callbacks drm: Clean-up VBLANK-related callbacks in struct drm_driver drm: Remove legacy version of get_scanout_position() Tomi Valkeinen (1): drm/bridge: tfp410: add pclk limits Vasily Khoruzhick (1): drm/lima: fix recovering from PLBU out of memory Ville Syrjälä (6): drm/edid: Check the number of detailed timing descriptors in the CEA ext block drm/edid: Don't accept any old garbage as a display descriptor drm/edid: Introduce is_detailed_timing_descritor() drm/edid: Clear out spurious whitespace drm/edid: Document why we don't bounds check the DispID CEA block start/end drm/edid: Add a FIXME about DispID CEA data block revision Wen Yang (1): drm/omap: fix possible object reference leak Yannick Fertré (1): drm/bridge/synopsys: dsi: missing post disable Zheng Bin (1): drm/omap: use true,false for bool variable Zhihui Chen (3): drm/hisilicon/hibmc: fix 'xset dpms force off' fail drm/hisilicon/hibmc: add DPMS on/off function drm/hisilicon/hibmc: add gamma_set function .../bindings/display/allwinner,sun4i-a10-tcon.yaml | 6 + .../bindings/display/bridge/adi,adv7511.txt | 23 +- .../devicetree/bindings/display/bridge/ps8640.yaml | 112 + .../bindings/display/bridge/toshiba,tc358768.yaml | 159 ++ .../bindings/display/ilitek,ili9486.yaml | 73 + .../bindings/display/panel/auo,b080uan01.txt | 7 - .../bindings/display/panel/auo,b101aw03.txt | 7 - .../bindings/display/panel/auo,b101ean01.txt | 7 - .../bindings/display/panel/auo,b101xtn01.txt | 7 - .../bindings/display/panel/auo,b116xw03.txt | 7 - .../bindings/display/panel/auo,b133htn01.txt | 7 - .../bindings/display/panel/auo,b133xtn01.txt | 7 - .../bindings/display/panel/auo,g070vvn01.txt | 29 - .../bindings/display/panel/auo,g101evn010.txt | 12 - .../bindings/display/panel/auo,g104sn02.txt | 12 - .../bindings/display/panel/auo,g133han01.txt | 7 - .../bindings/display/panel/auo,g185han01.txt | 7 - .../bindings/display/panel/auo,p320hvn03.txt | 8 - .../bindings/display/panel/auo,t215hvn01.txt | 7 - .../bindings/display/panel/avic,tm070ddh03.txt | 7 - .../bindings/display/panel/boe,hv070wsa-100.txt | 28 - .../bindings/display/panel/boe,nv101wxmn51.txt | 7 - .../bindings/display/panel/boe,tv080wum-nl0.txt | 7 - .../bindings/display/panel/boe,tv101wum-nl6.yaml | 80 + .../display/panel/cdtech,s043wq26h-ct7.txt | 12 - .../display/panel/cdtech,s070wv95-ct16.txt | 12 - .../display/panel/chunghwa,claa070wp03xg.txt | 7 - .../display/panel/chunghwa,claa101wa01a.txt | 7 - .../display/panel/chunghwa,claa101wb03.txt | 7 - .../display/panel/dataimage,scf0700c48ggu18.txt | 8 - .../bindings/display/panel/dlc,dlc1010gig.txt | 12 - .../bindings/display/panel/edt,et-series.txt | 55 - .../display/panel/evervision,vgg804821.txt | 12 - .../display/panel/feixin,k101-im2ba02.yaml | 55 + .../display/panel/foxlink,fl500wvr00-a0t.txt | 7 - .../bindings/display/panel/friendlyarm,hd702e.txt | 32 - .../display/panel/giantplus,gpg482739qs5.txt | 7 - .../bindings/display/panel/hannstar,hsd070pww1.txt | 7 - .../bindings/display/panel/hannstar,hsd100pxn1.txt | 7 - .../bindings/display/panel/hit,tx23d38vm0caa.txt | 7 - .../bindings/display/panel/innolux,at043tn24.txt | 7 - .../bindings/display/panel/innolux,at070tn92.txt | 7 - .../bindings/display/panel/innolux,g070y2-l01.txt | 12 - .../bindings/display/panel/innolux,g101ice-l01.txt | 7 - .../bindings/display/panel/innolux,g121i1-l01.txt | 7 - .../bindings/display/panel/innolux,g121x1-l03.txt | 7 - .../bindings/display/panel/innolux,n116bge.txt | 7 - .../bindings/display/panel/innolux,n156bge-l21.txt | 7 - .../bindings/display/panel/innolux,zj070na-01p.txt | 7 - .../bindings/display/panel/koe,tx14d24vm1bpa.txt | 42 - .../bindings/display/panel/koe,tx31d200vm0baa.txt | 25 - .../bindings/display/panel/kyo,tcg121xglp.txt | 7 - .../display/panel/lemaker,bl035-rgb-002.txt | 12 - .../bindings/display/panel/lg,lb070wv8.txt | 7 - .../bindings/display/panel/lg,lp079qx1-sp0v.txt | 7 - .../bindings/display/panel/lg,lp097qx1-spa1.txt | 7 - .../bindings/display/panel/lg,lp120up1.txt | 7 - .../bindings/display/panel/lg,lp129qe.txt | 7 - .../display/panel/mitsubishi,aa070mc01.txt | 7 - .../bindings/display/panel/nec,nl12880b20-05.txt | 8 - .../bindings/display/panel/nec,nl4827hc19-05b.txt | 7 - .../bindings/display/panel/netron-dy,e231732.txt | 7 - .../panel/newhaven,nhd-4.3-480272ef-atxl.txt | 7 - .../display/panel/nlt,nl192108ac18-02d.txt | 8 - .../devicetree/bindings/display/panel/nvd,9128.txt | 7 - .../display/panel/okaya,rs800480t-7x0gp.txt | 7 - .../display/panel/olimex,lcd-olinuxino-43-ts.txt | 7 - .../bindings/display/panel/ontat,yx700wv03.txt | 7 - .../bindings/display/panel/orisetech,otm8009a.txt | 23 - .../bindings/display/panel/orisetech,otm8009a.yaml | 53 + .../display/panel/ortustech,com37h3m05dtc.txt | 12 - .../display/panel/ortustech,com37h3m99dtc.txt | 12 - .../display/panel/ortustech,com43h4m85ulc.txt | 7 - .../display/panel/osddisplays,osd070t1718-19ts.txt | 12 - .../display/panel/osddisplays,osd101t2045-53ts.txt | 11 - .../display/panel/panasonic,vvx10f004b00.txt | 7 - .../display/panel/panasonic,vvx10f034n00.txt | 20 - .../bindings/display/panel/panel-simple-dsi.yaml | 67 + .../bindings/display/panel/panel-simple.yaml | 207 ++ .../display/panel/qiaodian,qd43003c0-40.txt | 7 - .../bindings/display/panel/raydium,rm68200.txt | 25 - .../bindings/display/panel/raydium,rm68200.yaml | 56 + .../display/panel/rocktech,rk070er9427.txt | 25 - .../display/panel/samsung,lsn122dl01-c01.txt | 7 - .../bindings/display/panel/samsung,ltn101nt05.txt | 7 - .../display/panel/samsung,ltn140at29-301.txt | 7 - .../display/panel/samsung,s6e88a0-ams452ef01.yaml | 50 + .../bindings/display/panel/sharp,lq035q7db03.txt | 12 - .../bindings/display/panel/sharp,lq070y3dg3b.txt | 12 - .../bindings/display/panel/sharp,lq101k1ly04.txt | 7 - .../bindings/display/panel/sharp,lq123p1jx31.txt | 7 - .../display/panel/shelly,sca07010-bfn-lnn.txt | 7 - .../bindings/display/panel/starry,kr122ea0sra.txt | 7 - .../bindings/display/panel/tianma,tm070jdhg30.txt | 7 - .../bindings/display/panel/tianma,tm070rvhg71.txt | 29 - .../display/panel/toshiba,lt089ac29000.txt | 8 - .../bindings/display/panel/tpk,f07a-0102.txt | 8 - .../bindings/display/panel/tpk,f10a-0102.txt | 8 - .../bindings/display/panel/urt,umsh-8596md.txt | 16 - .../bindings/display/panel/vl050_8048nt_c01.txt | 12 - .../bindings/display/panel/winstar,wf35ltiacd.txt | 48 - .../bindings/display/sitronix,st7735r.txt | 35 - .../bindings/display/sitronix,st7735r.yaml | 78 + .../bindings/display/ti/ti,am65x-dss.yaml | 152 ++ .../bindings/display/ti/ti,j721e-dss.yaml | 208 ++ .../devicetree/bindings/display/ti/ti,k2g-dss.yaml | 106 + .../devicetree/bindings/vendor-prefixes.yaml | 6 + Documentation/gpu/todo.rst | 22 + MAINTAINERS | 28 +- drivers/dma-buf/Kconfig | 2 +- drivers/gpu/drm/Kconfig | 2 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/amd/amdgpu/amdgpu.h | 6 +- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 16 +- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 15 - drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 21 +- drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 5 + drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 6 - drivers/gpu/drm/amd/amdgpu/dce_v10_0.c | 5 + drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | 5 + drivers/gpu/drm/amd/amdgpu/dce_v6_0.c | 5 + drivers/gpu/drm/amd/amdgpu/dce_v8_0.c | 5 + drivers/gpu/drm/amd/amdgpu/dce_virtual.c | 5 + drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 13 +- drivers/gpu/drm/arc/arcpgu_crtc.c | 16 - drivers/gpu/drm/ast/ast_main.c | 24 +- drivers/gpu/drm/ast/ast_mode.c | 2 - drivers/gpu/drm/bochs/bochs_drv.c | 6 +- drivers/gpu/drm/bochs/bochs_hw.c | 24 +- drivers/gpu/drm/bochs/bochs_kms.c | 34 +- drivers/gpu/drm/bridge/Kconfig | 22 + drivers/gpu/drm/bridge/Makefile | 2 + drivers/gpu/drm/bridge/adv7511/Kconfig | 13 +- drivers/gpu/drm/bridge/adv7511/Makefile | 3 +- drivers/gpu/drm/bridge/adv7511/adv7511.h | 40 +- drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 20 +- drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 44 +- drivers/gpu/drm/bridge/panel.c | 2 +- drivers/gpu/drm/bridge/parade-ps8640.c | 348 +++ drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 3 +- drivers/gpu/drm/bridge/tc358768.c | 1044 ++++++++ drivers/gpu/drm/bridge/ti-sn65dsi86.c | 267 +- drivers/gpu/drm/bridge/ti-tfp410.c | 13 + drivers/gpu/drm/cirrus/cirrus.c | 51 +- drivers/gpu/drm/drm_atomic.c | 117 + drivers/gpu/drm/drm_atomic_helper.c | 83 +- drivers/gpu/drm/drm_atomic_state_helper.c | 102 + drivers/gpu/drm/drm_auth.c | 8 - drivers/gpu/drm/drm_bridge.c | 437 ++- drivers/gpu/drm/drm_bufs.c | 20 +- drivers/gpu/drm/drm_client_modeset.c | 12 +- drivers/gpu/drm/drm_connector.c | 81 +- drivers/gpu/drm/drm_crtc_helper.c | 4 - drivers/gpu/drm/drm_crtc_internal.h | 2 + drivers/gpu/drm/drm_debugfs.c | 3 +- drivers/gpu/drm/drm_debugfs_crc.c | 2 +- drivers/gpu/drm/drm_dma.c | 21 +- drivers/gpu/drm/drm_dp_helper.c | 62 +- drivers/gpu/drm/drm_dp_mst_topology.c | 41 +- drivers/gpu/drm/drm_drv.c | 20 +- drivers/gpu/drm/drm_edid.c | 153 +- drivers/gpu/drm/drm_fb_helper.c | 16 +- drivers/gpu/drm/drm_file.c | 90 +- drivers/gpu/drm/drm_format_helper.c | 2 +- drivers/gpu/drm/drm_framebuffer.c | 122 + drivers/gpu/drm/drm_gem_vram_helper.c | 61 + drivers/gpu/drm/drm_internal.h | 1 + drivers/gpu/drm/drm_ioctl.c | 1 + drivers/gpu/drm/drm_irq.c | 4 - drivers/gpu/drm/drm_mipi_dbi.c | 39 +- drivers/gpu/drm/drm_pci.c | 36 +- drivers/gpu/drm/drm_syncobj.c | 87 +- drivers/gpu/drm/drm_vblank.c | 174 +- drivers/gpu/drm/drm_vm.c | 10 +- drivers/gpu/drm/gma500/cdv_intel_display.c | 3 + drivers/gpu/drm/gma500/psb_drv.c | 4 - drivers/gpu/drm/gma500/psb_drv.h | 6 +- drivers/gpu/drm/gma500/psb_intel_display.c | 3 + drivers/gpu/drm/gma500/psb_irq.c | 12 +- drivers/gpu/drm/gma500/psb_irq.h | 7 +- drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c | 56 + drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_regs.h | 11 + drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c | 1 + drivers/gpu/drm/i915/display/icl_dsi.c | 5 +- drivers/gpu/drm/i915/display/intel_display.c | 7 + drivers/gpu/drm/i915/display/intel_display_types.h | 2 - drivers/gpu/drm/i915/display/intel_dp.c | 11 +- drivers/gpu/drm/i915/display/vlv_dsi.c | 5 +- drivers/gpu/drm/i915/i915_drv.c | 5 +- drivers/gpu/drm/i915/i915_irq.c | 20 +- drivers/gpu/drm/i915/i915_irq.h | 6 +- drivers/gpu/drm/i915/i915_switcheroo.c | 2 +- drivers/gpu/drm/imx/ipuv3-plane.c | 2 +- drivers/gpu/drm/imx/parallel-display.c | 176 +- drivers/gpu/drm/lima/lima_drv.c | 16 +- drivers/gpu/drm/lima/lima_drv.h | 1 + drivers/gpu/drm/lima/lima_gem.c | 134 +- drivers/gpu/drm/lima/lima_gem.h | 4 + drivers/gpu/drm/lima/lima_gp.c | 63 +- drivers/gpu/drm/lima/lima_mmu.c | 5 + drivers/gpu/drm/lima/lima_mmu.h | 1 + drivers/gpu/drm/lima/lima_regs.h | 1 + drivers/gpu/drm/lima/lima_sched.c | 33 +- drivers/gpu/drm/lima/lima_sched.h | 6 + drivers/gpu/drm/lima/lima_vm.c | 46 +- drivers/gpu/drm/lima/lima_vm.h | 1 + drivers/gpu/drm/mcde/mcde_drv.c | 9 +- drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 2 + drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 1 - drivers/gpu/drm/msm/disp/mdp4/mdp4_crtc.c | 2 + drivers/gpu/drm/msm/disp/mdp5/mdp5_crtc.c | 82 + drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 95 - drivers/gpu/drm/msm/msm_drv.c | 10 +- drivers/gpu/drm/msm/msm_drv.h | 3 + drivers/gpu/drm/nouveau/dispnv04/crtc.c | 4 + drivers/gpu/drm/nouveau/dispnv50/head.c | 5 + drivers/gpu/drm/nouveau/nouveau_bo.c | 8 - drivers/gpu/drm/nouveau/nouveau_display.c | 28 +- drivers/gpu/drm/nouveau/nouveau_display.h | 11 +- drivers/gpu/drm/nouveau/nouveau_drm.c | 5 - drivers/gpu/drm/nouveau/nouveau_vga.c | 2 +- drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c | 4 +- drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c | 4 +- drivers/gpu/drm/omapdrm/omap_crtc.c | 2 +- drivers/gpu/drm/omapdrm/omap_dmm_tiler.c | 4 +- drivers/gpu/drm/panel/Kconfig | 24 + drivers/gpu/drm/panel/Makefile | 3 + drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c | 854 ++++++ drivers/gpu/drm/panel/panel-feixin-k101-im2ba02.c | 526 ++++ .../drm/panel/panel-samsung-s6e88a0-ams452ef01.c | 293 +++ drivers/gpu/drm/panel/panel-simple.c | 165 +- drivers/gpu/drm/panel/panel-tpo-td028ttec1.c | 17 +- drivers/gpu/drm/panfrost/panfrost_gpu.c | 7 +- drivers/gpu/drm/panfrost/panfrost_job.c | 2 +- drivers/gpu/drm/panfrost/panfrost_mmu.c | 6 +- drivers/gpu/drm/pl111/pl111_versatile.c | 73 + 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6 +- drivers/gpu/drm/sun4i/sun4i_tcon.c | 103 +- drivers/gpu/drm/sun4i/sun4i_tcon.h | 14 + drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 129 +- drivers/gpu/drm/sun4i/sun6i_mipi_dsi.h | 2 +- drivers/gpu/drm/tidss/Kconfig | 14 + drivers/gpu/drm/tidss/Makefile | 12 + drivers/gpu/drm/tidss/tidss_crtc.c | 377 +++ drivers/gpu/drm/tidss/tidss_crtc.h | 46 + drivers/gpu/drm/tidss/tidss_dispc.c | 2768 ++++++++++++++++++++ drivers/gpu/drm/tidss/tidss_dispc.h | 132 + drivers/gpu/drm/tidss/tidss_dispc_regs.h | 243 ++ drivers/gpu/drm/tidss/tidss_drv.c | 285 ++ drivers/gpu/drm/tidss/tidss_drv.h | 39 + drivers/gpu/drm/tidss/tidss_encoder.c | 88 + drivers/gpu/drm/tidss/tidss_encoder.h | 17 + drivers/gpu/drm/tidss/tidss_irq.c | 146 ++ drivers/gpu/drm/tidss/tidss_irq.h | 77 + drivers/gpu/drm/tidss/tidss_kms.c | 249 ++ drivers/gpu/drm/tidss/tidss_kms.h | 15 + drivers/gpu/drm/tidss/tidss_plane.c | 217 ++ drivers/gpu/drm/tidss/tidss_plane.h | 25 + drivers/gpu/drm/tidss/tidss_scale_coefs.c | 202 ++ 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1 0

[PATCH] drm/hisilicon: Fixed pcie resource conflict using the general API
by Tian Tao 21 Feb '20

21 Feb '20

the kernel provide the drm_fb_helper_remove_conflicting_pci_framebuffer to remvoe the pcie resource conflict,there is no need to driver it again. Signed-off-by: Tian Tao <tiantao6(a)hisilicon.com> --- drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 22 +++++----------------- 1 file changed, 5 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c index 7ebe831..0f7dba7 100644 --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c @@ -47,22 +47,6 @@ static irqreturn_t hibmc_drm_interrupt(int irq, void *arg) return IRQ_HANDLED; } -static void hibmc_remove_framebuffers(struct pci_dev *pdev) -{ - struct apertures_struct *ap; - - ap = alloc_apertures(1); - if (!ap) - return; - - ap->ranges[0].base = pci_resource_start(pdev, 0); - ap->ranges[0].size = pci_resource_len(pdev, 0); - - drm_fb_helper_remove_conflicting_framebuffers(ap, "hibmcdrmfb", false); - - kfree(ap); -} - static struct drm_driver hibmc_driver = { .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, .fops = &hibmc_fops, @@ -343,7 +327,11 @@ static int hibmc_pci_probe(struct pci_dev *pdev, struct drm_device *dev; int ret; - hibmc_remove_framebuffers(pdev); + ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, + "hibmcdrmfb"); + if (ret) + return ret; + dev = drm_dev_alloc(&hibmc_driver, &pdev->dev); if (IS_ERR(dev)) { -- 2.7.4

4 4

[PATCH 00/11] new cgroup controller for gpu/drm subsystem
by Kenny Ho 21 Feb '20

21 Feb '20

This is a submission for the introduction of a new cgroup controller for the drm subsystem follow a series of RFCs [v1, v2, v3, v4] Changes from the RFC base on the feedbacks: * drop all drm.memory.* related implementation and focus only on buffer and lgpu * add weight resource type for logical gpu (lgpu) * uncoupled drmcg device iteration from drm_minor I'd also like to highlight the fact that these patches are currently released under MIT/X11 license aligning with the norm of the drm subsystem, but I am working to have the cgroup parts release under GPLv2 to align with the norm of the cgroup subsystem. [v1]: https://lists.freedesktop.org/archives/dri-devel/2018-November/197106.html [v2]: https://www.spinics.net/lists/cgroups/msg22074.html [v3]: https://lists.freedesktop.org/archives/amd-gfx/2019-June/036026.html [v4]: https://patchwork.kernel.org/cover/11120371/ Changes since the start of RFC are as follows: v4: Unchanged (no review needed) * drm.memory.*/ttm resources (Patch 9-13, I am still working on memory bandwidth and shrinker) Base on feedbacks on v3: * update nominclature to drmcg * embed per device drmcg properties into drm_device * split GEM buffer related commits into stats and limit * rename function name to align with convention * combined buffer accounting and check into a try_charge function * support buffer stats without limit enforcement * removed GEM buffer sharing limitation * updated documentations New features: * introducing logical GPU concept * example implementation with AMD KFD v3: Base on feedbacks on v2: * removed .help type file from v2 * conform to cgroup convention for default and max handling * conform to cgroup convention for addressing device specific limits (with major:minor) New function: * adopted memparse for memory size related attributes * added macro to marshall drmcgrp cftype private ?(DRMCG_CTF_PRIV, etc.) * added ttm buffer usage stats (per cgroup, for system, tt, vram.) * added ttm buffer usage limit (per cgroup, for vram.) * added per cgroup bandwidth stats and limiting (burst and average bandwidth) v2: * Removed the vendoring concepts * Add limit to total buffer allocation * Add limit to the maximum size of a buffer allocation v1: cover letter The purpose of this patch series is to start a discussion for a generic cgroup controller for the drm subsystem. The design proposed here is a very early one. We are hoping to engage the community as we develop the idea. Backgrounds =========== Control Groups/cgroup provide a mechanism for aggregating/partitioning sets of tasks, and all their future children, into hierarchical groups with specialized behaviour, such as accounting/limiting the resources which processes in a cgroup can access[1]. Weights, limits, protections, allocations are the main resource distribution models. Existing cgroup controllers includes cpu, memory, io, rdma, and more. cgroup is one of the foundational technologies that enables the popular container application deployment and management method. Direct Rendering Manager/drm contains code intended to support the needs of complex graphics devices. Graphics drivers in the kernel may make use of DRM functions to make tasks like memory management, interrupt handling and DMA easier, and provide a uniform interface to applications. The DRM has also developed beyond traditional graphics applications to support compute/GPGPU applications. Motivations =========== As GPU grow beyond the realm of desktop/workstation graphics into areas like data center clusters and IoT, there are increasing needs to monitor and regulate GPU as a resource like cpu, memory and io. Matt Roper from Intel began working on similar idea in early 2018 [2] for the purpose of managing GPU priority using the cgroup hierarchy. While that particular use case may not warrant a standalone drm cgroup controller, there are other use cases where having one can be useful [3]. Monitoring GPU resources such as VRAM and buffers, CU (compute unit [AMD's nomenclature])/EU (execution unit [Intel's nomenclature]), GPU job scheduling [4] can help sysadmins get a better understanding of the applications usage profile. Further usage regulations of the aforementioned resources can also help sysadmins optimize workload deployment on limited GPU resources. With the increased importance of machine learning, data science and other cloud-based applications, GPUs are already in production use in data centers today [5,6,7]. Existing GPU resource management is very course grain, however, as sysadmins are only able to distribute workload on a per-GPU basis [8]. An alternative is to use GPU virtualization (with or without SRIOV) but it generally acts on the entire GPU instead of the specific resources in a GPU. With a drm cgroup controller, we can enable alternate, fine-grain, sub-GPU resource management (in addition to what may be available via GPU virtualization.) In addition to production use, the DRM cgroup can also help with testing graphics application robustness by providing a mean to artificially limit DRM resources availble to the applications. Challenges ========== While there are common infrastructure in DRM that is shared across many vendors (the scheduler [4] for example), there are also aspects of DRM that are vendor specific. To accommodate this, we borrowed the mechanism used by the cgroup to handle different kinds of cgroup controller. Resources for DRM are also often device (GPU) specific instead of system specific and a system may contain more than one GPU. For this, we borrowed some of the ideas from RDMA cgroup controller. Approach ======== To experiment with the idea of a DRM cgroup, we would like to start with basic accounting and statistics, then continue to iterate and add regulating mechanisms into the driver. [1] https://www.kernel.org/doc/Documentation/cgroup-v1/cgroups.txt [2] https://lists.freedesktop.org/archives/intel-gfx/2018-January/153156.html [3] https://www.spinics.net/lists/cgroups/msg20720.html [4] https://elixir.bootlin.com/linux/latest/source/drivers/gpu/drm/scheduler [5] https://kubernetes.io/docs/tasks/manage-gpus/scheduling-gpus/ [6] https://blog.openshift.com/gpu-accelerated-sql-queries-with-postgresql-pg-s… [7] https://github.com/RadeonOpenCompute/k8s-device-plugin [8] https://github.com/kubernetes/kubernetes/issues/52757 Kenny Ho (11): cgroup: Introduce cgroup for drm subsystem drm, cgroup: Bind drm and cgroup subsystem drm, cgroup: Initialize drmcg properties drm, cgroup: Add total GEM buffer allocation stats drm, cgroup: Add peak GEM buffer allocation stats drm, cgroup: Add GEM buffer allocation count stats drm, cgroup: Add total GEM buffer allocation limit drm, cgroup: Add peak GEM buffer allocation limit drm, cgroup: Introduce lgpu as DRM cgroup resource drm, cgroup: add update trigger after limit change drm/amdgpu: Integrate with DRM cgroup Documentation/admin-guide/cgroup-v2.rst | 197 ++- Documentation/cgroup-v1/drm.rst | 1 + drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 4 + drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 48 + drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 6 +- drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 6 + drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 3 + .../amd/amdkfd/kfd_process_queue_manager.c | 153 +++ drivers/gpu/drm/drm_drv.c | 12 + drivers/gpu/drm/drm_gem.c | 16 +- include/drm/drm_cgroup.h | 81 ++ include/drm/drm_device.h | 7 + include/drm/drm_drv.h | 19 + include/drm/drm_gem.h | 12 +- include/linux/cgroup_drm.h | 144 +++ include/linux/cgroup_subsys.h | 4 + init/Kconfig | 5 + kernel/cgroup/Makefile | 1 + kernel/cgroup/drm.c | 1059 +++++++++++++++++ 19 files changed, 1773 insertions(+), 5 deletions(-) create mode 100644 Documentation/cgroup-v1/drm.rst create mode 100644 include/drm/drm_cgroup.h create mode 100644 include/linux/cgroup_drm.h create mode 100644 kernel/cgroup/drm.c -- 2.25.0

6 25

[PATCH] MAINTAINERS: Update myself email address
by Xinliang Liu 21 Feb '20

21 Feb '20

Update myself email address. Add John Stultz as a reviewer. Thanks John. Update git tree to drm-misc Signed-off-by: Xinliang Liu <xinliang.liu(a)linaro.org> --- MAINTAINERS | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index 978766c6715e..befc3c0afc75 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5600,12 +5600,13 @@ S: Maintained F: drivers/gpu/drm/gma500/ DRM DRIVERS FOR HISILICON -M: Xinliang Liu <z.liuxinliang(a)hisilicon.com> +M: Xinliang Liu <xinliang.liu(a)linaro.org> M: Rongrong Zou <zourongrong(a)gmail.com> +R: John Stultz <john.stultz(a)linaro.org> R: Xinwei Kong <kong.kongxinwei(a)hisilicon.com> R: Chen Feng <puck.chen(a)hisilicon.com> L: dri-devel(a)lists.freedesktop.org -T: git git://github.com/xin3liang/linux.git +T: git git://anongit.freedesktop.org/drm/drm-misc S: Maintained F: drivers/gpu/drm/hisilicon/ F: Documentation/devicetree/bindings/display/hisilicon/ -- 2.20.1

2 3

[PATCH 0/2] Security mitigation for Intel Gen7/7.5 HWs
by Akeem G Abodunrin 20 Feb '20

20 Feb '20

Intel ID: PSIRT-TA-201910-001 CVEID: CVE-2019-14615 Summary of Vulnerability ------------------------ Insufficient control flow in certain data structures for some Intel(R) Processors with Intel Processor Graphics may allow an unauthenticated user to potentially enable information disclosure via local access Products affected: ------------------ Intel CPU’s with Gen7, Gen7.5 and Gen9 Graphics. Mitigation Summary ------------------ This patch provides mitigation for Gen7 and Gen7.5 hardware only. Patch for Gen9 devices have been provided and merged to Linux mainline, and backported to stable kernels. Note that Gen8 is not impacted due to a previously implemented workaround. The mitigation involves submitting a custom EU kernel prior to every context restore, in order to forcibly clear down residual EU and URB resources. The custom CB kernels are generated/assembled automatically, using Mesa (an open source tool) and IGT GPU tool - assembly sources are provided with IGT source code. This security mitigation change does not trigger any known performance regression. Performance is on par with current mainline/drm-tip. Note on Address Space Isolation (Full PPGTT) -------------------------------------------- Isolation of EU kernel assets should be considered complementary to the existing support for address space isolation (aka Full PPGTT), since without address space isolation there is minimal value in preventing leakage between EU contexts. Full PPGTT has long been supported on Gen Gfx devices since Gen8, and protection against EU residual leakage is a welcome addition for these newer platforms. By contrast, Gen7 and Gen7.5 device introduced Full PPGTT support only as a hardware development feature for anticipated Gen8 productization. Support was never intended for, or provided to the Linux kernels for these platforms. Recent work (still ongoing) to the mainline kernel is retroactively providing this support, but due to the level of complexity it is not practical to attempt to backport this to earlier stable kernels. Since without Full PPGTT, EU residuals protection has questionable benefit, *there are no plans to provide stable kernel backports for this patch series.* Mika Kuoppala (1): drm/i915: Add mechanism to submit a context WA on ring submission Prathap Kumar Valsan (1): drm/i915/gen7: Clear all EU/L3 residual contexts drivers/gpu/drm/i915/Makefile | 1 + drivers/gpu/drm/i915/gt/gen7_renderclear.c | 402 ++++++++++++++++++ drivers/gpu/drm/i915/gt/gen7_renderclear.h | 15 + drivers/gpu/drm/i915/gt/hsw_clear_kernel.c | 61 +++ drivers/gpu/drm/i915/gt/intel_gpu_commands.h | 17 +- .../gpu/drm/i915/gt/intel_ring_submission.c | 135 +++++- drivers/gpu/drm/i915/gt/ivb_clear_kernel.c | 61 +++ 7 files changed, 685 insertions(+), 7 deletions(-) create mode 100644 drivers/gpu/drm/i915/gt/gen7_renderclear.c create mode 100644 drivers/gpu/drm/i915/gt/gen7_renderclear.h create mode 100644 drivers/gpu/drm/i915/gt/hsw_clear_kernel.c create mode 100644 drivers/gpu/drm/i915/gt/ivb_clear_kernel.c -- 2.20.1

1 2

[PATCH AUTOSEL 5.5 001/542] drm/amdgpu: remove set but not used variable 'mc_shared_chmap' from 'gfx_v6_0.c' and 'gfx_v7_0.c'
by Sasha Levin 20 Feb '20

20 Feb '20

From: yu kuai <yukuai3(a)huawei.com> [ Upstream commit 747a397d394fac0001e4b3c03d7dce3a118af567 ] Fixes gcc '-Wunused-but-set-variable' warning: drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c: In function ‘gfx_v6_0_constants_init’: drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c:1579:6: warning: variable ‘mc_shared_chmap’ set but not used [-Wunused-but-set-variable] drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c: In function ‘gfx_v7_0_gpu_early_init’: drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c:4262:6: warning: variable ‘mc_shared_chmap’ set but not used [-Wunused-but-set-variable] Fixes: 2cd46ad22383 ("drm/amdgpu: add graphic pipeline implementation for si v8") Fixes: d93f3ca706b8 ("drm/amdgpu/gfx7: rework gpu_init()") Signed-off-by: yu kuai <yukuai3(a)huawei.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c | 3 +-- drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 3 +-- 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c index 7f0a63628c43a..31f44d05e606d 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c @@ -1576,7 +1576,7 @@ static void gfx_v6_0_config_init(struct amdgpu_device *adev) static void gfx_v6_0_constants_init(struct amdgpu_device *adev) { u32 gb_addr_config = 0; - u32 mc_shared_chmap, mc_arb_ramcfg; + u32 mc_arb_ramcfg; u32 sx_debug_1; u32 hdp_host_path_cntl; u32 tmp; @@ -1678,7 +1678,6 @@ static void gfx_v6_0_constants_init(struct amdgpu_device *adev) WREG32(mmBIF_FB_EN, BIF_FB_EN__FB_READ_EN_MASK | BIF_FB_EN__FB_WRITE_EN_MASK); - mc_shared_chmap = RREG32(mmMC_SHARED_CHMAP); adev->gfx.config.mc_arb_ramcfg = RREG32(mmMC_ARB_RAMCFG); mc_arb_ramcfg = adev->gfx.config.mc_arb_ramcfg; diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c index d92e92e5d50b7..8f20a5dd44fe7 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c @@ -4258,7 +4258,7 @@ static int gfx_v7_0_late_init(void *handle) static void gfx_v7_0_gpu_early_init(struct amdgpu_device *adev) { u32 gb_addr_config; - u32 mc_shared_chmap, mc_arb_ramcfg; + u32 mc_arb_ramcfg; u32 dimm00_addr_map, dimm01_addr_map, dimm10_addr_map, dimm11_addr_map; u32 tmp; @@ -4335,7 +4335,6 @@ static void gfx_v7_0_gpu_early_init(struct amdgpu_device *adev) break; } - mc_shared_chmap = RREG32(mmMC_SHARED_CHMAP); adev->gfx.config.mc_arb_ramcfg = RREG32(mmMC_ARB_RAMCFG); mc_arb_ramcfg = adev->gfx.config.mc_arb_ramcfg; -- 2.20.1

3 83

[PATCH] drm/msm/a6xx: Fix CP_MEMPOOL state name
by Rob Clark 20 Feb '20

20 Feb '20

From: Rob Clark <robdclark(a)chromium.org> Signed-off-by: Rob Clark <robdclark(a)chromium.org> --- drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h index 68cccfa2870a..bbbec8d26870 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h @@ -370,7 +370,7 @@ static const struct a6xx_indexed_registers { }; static const struct a6xx_indexed_registers a6xx_cp_mempool_indexed = { - "CP_MEMPOOOL", REG_A6XX_CP_MEM_POOL_DBG_ADDR, + "CP_MEMPOOL", REG_A6XX_CP_MEM_POOL_DBG_ADDR, REG_A6XX_CP_MEM_POOL_DBG_DATA, 0x2060, }; -- 2.24.1

2 1

drm_dp_mst_topology.c and old compilers
by Paul E. McKenney 20 Feb '20

20 Feb '20

Hello! A box with GCC 4.8.3 compiler didn't like drm_dp_mst_topology.c. The following (lightly tested) patch makes it happy and seems OK for newer compilers as well. Is this of interest? Thanx, Paul ----------------------------------------------------------------------- diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 20cdaf3..232408a 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -5396,7 +5396,7 @@ struct drm_dp_aux *drm_dp_mst_dsc_aux_for_port(struct drm_dp_mst_port *port) { struct drm_dp_mst_port *immediate_upstream_port; struct drm_dp_mst_port *fec_port; - struct drm_dp_desc desc = { 0 }; + struct drm_dp_desc desc = {{{ 0 }}}; u8 endpoint_fec; u8 endpoint_dsc;

4 4

[PATCH] drm/virtio: fix virtio-gpu resource id creation race
by John Bates 20 Feb '20

20 Feb '20

The previous code was not thread safe and caused undefined behavior from spurious duplicate resource IDs. In this patch, an atomic_t is used instead. We no longer see any duplicate IDs in tests with this change. Signed-off-by: John Bates <jbates(a)chromium.org> --- drivers/gpu/drm/virtio/virtgpu_object.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c index 017a9e0fc3bb..b11c1fce1770 100644 --- a/drivers/gpu/drm/virtio/virtgpu_object.c +++ b/drivers/gpu/drm/virtio/virtgpu_object.c @@ -42,8 +42,8 @@ static int virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev, * "f91a9dd35715 Fix unlinking resources from hash * table." (Feb 2019) fixes the bug. */ - static int handle; - handle++; + static atomic_t seqno; + int handle = atomic_inc_return(&seqno); *resid = handle + 1; } else { int handle = ida_alloc(&vgdev->resource_ida, GFP_KERNEL); -- 2.25.0.265.gbab2e86ba0-goog

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dri-devel February 2020