Linux kernel documentation tree maintained by Jonathan Corbet http://mirrors.hust.edu.cn/git/lwn.git/atom?h=v4.8-rc3 2016-08-19T02:38:18+00:00 2016-08-19T02:38:18+00:00 Linus Torvalds torvalds@linux-foundation.org 2016-08-19T02:38:18+00:00 urn:sha1:952b159f2919a8d514f13999f9f463bddcc1dae7 Pull more drm fixes from Dave Airlie: "Daniel pointed out I'd missed some i915 fixes, and I also found a single etnaviv fix I missed. So here they are" * tag 'drm-fixes-for-4.8-rc3-2' of git://people.freedesktop.org/~airlied/linux: drm/etnaviv: take GPU lock later in the submit process drm/i915: Fix modeset handling during gpu reset, v5. drm/i915: fix aliasing_ppgtt leak drm/i915: fix WaInsertDummyPushConstPs drm/i915: Fix iboost setting for SKL Y/U DP DDI buffer translation entry 2 drm/i915/gen9: Give one extra block per line for SKL plane WM calculations drm/i915: Acquire audio powerwell for HD-Audio registers drm/i915: Add missing rpm wakelock to GGTT pread drm/i915/fbc: FBC causes display flicker when VT-d is enabled on Skylake drm/i915: Clean up the extra RPM ref on CHV with i915.enable_rc6=0 drm/i915: Program iboost settings for HDMI/DVI on SKL drm/i915: Fix iboost setting for DDI with 4 lanes on SKL drm/i915: Handle ENOSPC after failing to insert a mappable node drm/i915: Flush GT idle status upon reset 2016-08-18T22:51:13+00:00 Dave Airlie airlied@redhat.com 2016-08-18T22:51:13+00:00 urn:sha1:2c24ba2116d653b4a1315210e38eefbc9eeb1058 Collection of i915 fixes. * tag 'drm-intel-fixes-2016-08-15' of git://anongit.freedesktop.org/drm-intel: drm/i915: Fix modeset handling during gpu reset, v5. drm/i915: fix aliasing_ppgtt leak drm/i915: fix WaInsertDummyPushConstPs drm/i915: Fix iboost setting for SKL Y/U DP DDI buffer translation entry 2 drm/i915/gen9: Give one extra block per line for SKL plane WM calculations drm/i915: Acquire audio powerwell for HD-Audio registers drm/i915: Add missing rpm wakelock to GGTT pread drm/i915/fbc: FBC causes display flicker when VT-d is enabled on Skylake drm/i915: Clean up the extra RPM ref on CHV with i915.enable_rc6=0 drm/i915: Program iboost settings for HDMI/DVI on SKL drm/i915: Fix iboost setting for DDI with 4 lanes on SKL drm/i915: Handle ENOSPC after failing to insert a mappable node drm/i915: Flush GT idle status upon reset 2016-08-18T22:50:42+00:00 Dave Airlie airlied@redhat.com 2016-08-18T22:50:42+00:00 urn:sha1:aae2d1fc8323cfc2c6b971bd2127e21af91d9af6 Single GPU recovery fix * 'drm-etnaviv-fixes' of git://git.pengutronix.de/git/lst/linux: drm/etnaviv: take GPU lock later in the submit process 2016-08-18T20:45:48+00:00 Linus Torvalds torvalds@linux-foundation.org 2016-08-18T20:45:48+00:00 urn:sha1:bd3fd451ff3b205f0bde4d1bf7a310552c40d6e0 Pull locking fixes from Ingo Molnar: "Two lockless_dereference() related fixes" * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/barriers: Suppress sparse warnings in lockless_dereference() Revert "drm/fb-helper: Reduce READ_ONCE(master) to lockless_dereference" 2016-08-18T13:36:13+00:00 Johannes Berg johannes.berg@intel.com 2016-08-11T09:50:21+00:00 urn:sha1:f17b3ea3d2df7c9bf3ce1dbd65b5fd7061f8e787 This reverts commit: fa7d81bb3c269 ("drm/fb-helper: Reduce READ_ONCE(master) to lockless_dereference") As Peter explained: [...] lockless_dereference() is _stronger_ than READ_ONCE(), not weaker. [...] Also, clue is in the name: 'dereference', you don't actually dereference the pointer here, only load it. My next patch breaks the compile without this revert, because it assumes you want to deference and thus also need the struct type visible (which it isn't here), so revert it. Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1470909022-687-1-git-send-email-johannes@sipsolutions.net Signed-off-by: Ingo Molnar <mingo@kernel.org> 2016-08-16T14:27:09+00:00 Felix Kuehling Felix.Kuehling@amd.com 2016-08-12T23:25:21+00:00 urn:sha1:cab0b8d50e9bbef62c04067072c953433a87a9ff The GART aperture size can be bigger than 4GB. Therefore the offset used in amdgpu_gart_bind and amdgpu_gart_unbind must be 64-bit. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org 2016-08-15T12:00:40+00:00 Lucas Stach l.stach@pengutronix.de 2016-07-28T09:50:48+00:00 urn:sha1:d9853490176c88fff71d03ec9a174b77011f5026 Both the fence and event alloc are safe to be done without holding the GPU lock, as they either don't need any locking (fences) or are protected by their own lock (events). This solves a bad locking interaction between the submit path and the recover worker. If userspace manages to exhaust all available events while the GPU is hung, the submit will wait for events to become available holding the GPU lock. The recover worker waits for this lock to become available before trying to recover the GPU which frees up the allocated events. Essentially both paths are deadlocked until the submit path times out waiting for available events, failing the submit that could otherwise be handled just fine if the recover worker had the chance to bring the GPU back in a working state. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com> 2016-08-15T06:07:14+00:00 Dave Airlie airlied@redhat.com 2016-08-15T06:07:14+00:00 urn:sha1:93b1f14553a5f48104b639d28e41c2bb73c0dc37 mediatek-drm build dependency fixes - add COMMON_CLK dependency for mipi-tx PLL - add OF dependency for mtk_drm_drv - add ARM_SMCCC dependency for mtk-hdmi * tag 'mediatek-drm-fixes-2016-08-12' of git://git.pengutronix.de/git/pza/linux: drm/mediatek: add ARM_SMCCC dependency drm/mediatek: add CONFIG_OF dependency drm/mediatek: add COMMON_CLK dependency 2016-08-12T04:24:15+00:00 Dave Airlie airlied@redhat.com 2016-08-12T04:24:15+00:00 urn:sha1:c3beef5e14f938070d64a02c762171003018937b Some AMD fixes and remove workaround now we have pcieport pm. * 'drm-fixes-4.8' of git://people.freedesktop.org/~agd5f/linux: drm/amdgpu: Fix memory trashing if UVD ring test fails drm/amdgpu: fix vm init error path Revert "drm/radeon: work around lack of upstream ACPI support for D3cold" Revert "drm/amdgpu: work around lack of upstream ACPI support for D3cold" 2016-08-11T06:42:01+00:00 Arnd Bergmann arnd@arndb.de 2016-08-10T21:54:11+00:00 urn:sha1:306d674a2ddd565adde7d9d6703157105c8444a6 ARM SMCCC is only set for ARMv7 and ARMv8 CPUs, but we currently allow the driver to be build for older architecture levels as well, which results in a link failure: drivers/gpu/built-in.o: In function `mtk_hdmi_hw_make_reg_writable': :(.text+0x1e737c): undefined reference to `arm_smccc_smc' This adds a Kconfig dependency. The patch applies on my two previous fixes that are not yet applied, so please apply all three to get randconfig builds to work correctly. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 8f83f26891e1 ("drm/mediatek: Add HDMI support") Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>